型号 功能描述 生产厂家&企业 LOGO 操作
M27V402

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (512Kb x 8) Low Voltage OTP EPROM

DESCRIPTION The M27V405 is a low voltage 4 Mbit EPROM offered in the OTP range (one time programmable). It is ideally suited for microprocessor systems requiring large data or program storage and is organised as 524,288 by 8 bits. The M27V405 operates in the read mode with a supply voltage as l

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

4 Mbit (256Kb x 16) Low Voltage UV EPROM and OTP EPROM

DESCRIPTION The M27V402 is a low voltage, low power 4 Mbit UV erasable and electrically programmable EPROM, ideally suited for handheld and portable microprocessor systems requiring large programs. It is organized as 262,144 by 16 bits. The M27V402 operates in the read mode with a supply voltage

STMICROELECTRONICS

意法半导体

M27V402产品属性

  • 类型

    描述

  • 型号

    M27V402

  • 制造商

    STMICROELECTRONICS

  • 制造商全称

    STMicroelectronics

  • 功能描述

    4 Mbit 256Kb x 16 Low Voltage UV EPROM and OTP EPROM

更新时间:2025-8-7 23:00:00
IC供应商 芯片型号 品牌 批号 封装 库存 备注 价格
ST/意法
24+
NA/
11232
优势代理渠道,原装正品,可全系列订货开增值税票
S/T
24+
PLCC
990000
明嘉莱只做原装正品现货
SGS
24+/25+
5717
原装正品现货库存价优
ST
9735+
TSOP28
11232
一级代理,专注军工、汽车、医疗、工业、新能源、电力
ST
24+
PLCC
6980
原装现货,可开13%税票
STMICROELECT
05+
原厂原装
4279
只做全新原装真实现货供应
ST
2025+
TSSOP
3695
全新原厂原装产品、公司现货销售
ST
23+
TSOP28
30000
代理全新原装现货,价格优势
ST
25+
QFP
3200
全新原装、诚信经营、公司现货销售!
SGS-THOMSON
1997
TSOP28
9360
原装现货海量库存欢迎咨询

M27V402数据表相关新闻