位置:M68HC12A4EVB > M68HC12A4EVB详情

M68HC12A4EVB中文资料

厂家型号

M68HC12A4EVB

文件大小

194.09Kbytes

页面数量

4

功能描述

Primarily as an Expanded Mode Microcontroller

Tools Development kit For Use

数据手册

下载地址一下载地址二到原厂下载

简称

FREESCALE飞思卡尔

生产厂商

Freescale Semiconductor, Inc

中文名称

飞思卡尔半导体官网

M68HC12A4EVB数据手册规格书PDF详情

Introduction

The MC68HC812A4 (812A4) is designed primarily as an expanded mode microcontroller. It can be operated in expanded narrow mode for 8-bit peripheral devices and in expanded wide mode for 16-bit peripheral devices.

The M68HC12A4EVB (A4EVB) is designed to accommodate expanded narrow mode of operation, although in the factory it is configured in expanded wide mode.

The steps to set up the evaluation board are described in this engineering bulletin. They are designed to help guide users to configure emulation RAM (random-access memory) in expanded narrow mode and to utilize a third-party debugger to debug in C language.

Setting up the A4EVB in special expanded narrow mode requires modifying the evaluation board.

Follow these steps to make the modification:

• When setting up the evaluation board, turn off the power to the A4EVB.

• Jumpers W42 and W34 should be shunted between pins 1 and 2. W30 should be left floating or pulled out.

• Remove the 74HC32 chip from U3.

• Make a wire jumper from pin 2 on U3 socket to pin 3. This will make a direct connection from the RAM-CS signal to RAM-MSB-CS. Chip enable (CE) on pin 22 will have a direct connection to chip select header W11.

• Select CSP0 by shunting W11-8 between pin 2 and pin 3. CSP0 is enabled from reset and should be used to test the application program properly.

• Insert RAM chip in socket U6B. Notice that U6A does not have address line 0 routed, and it is used for expanded wide mode. On the other hand, U6B does have address line 0 routed directly and is designed for the use of expanded narrow mode.

• When memory paging is enabled, the EVB includes the footprint for a 28- and 32-pin RAM footprint. Address lines 16 and 18 are hardwired to U6B. However, address line 17 needs to be configured via jumper header W12 by shunting pin 3 and pin 4.

M68HC12A4EVB产品属性

  • 类型

    描述

  • 型号

    M68HC12A4EVB

  • 制造商

    Freescale Semiconductor

  • 功能描述

    Tools Development kit For Use

更新时间:2025-10-4 8:10:00
供应商 型号 品牌 批号 封装 库存 备注 价格
FREESCALE
23+
NONE
89630
当天发货全新原装现货
FREESCALE
24+
NONE
990000
明嘉莱只做原装正品现货
FREESCALE
25+
SOIC
4500
百分百原装正品 真实公司现货库存 本公司只做原装 可
Freescale
15+
4095
全新进口原装
FREESCALE
23+
NA
4095
原装正品代理渠道价格优势
FREESCALE
24+
NA/
251
优势代理渠道,原装正品,可全系列订货开增值税票
FREESCALE
23+
QFP
50000
全新原装正品现货,支持订货
恩XP
23+
100-LQFP
11200
主营:汽车电子,停产物料,军工IC
Freescale(飞思卡尔)
25+
封装
500000
源自原厂成本,高价回收工厂呆滞
Freescale Semiconductor
24+
M68KIT912DP256
2000