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M41ST84YMQ中文资料
M41ST84YMQ数据手册规格书PDF详情
SUMMARY DESCRIPTION
The M41ST84Y/W Serial supervisory TIMEKEEPER® SRAM is a low power 512-bit static CMOS SRAM organized as 64 words by 8 bits. A built-in 32.768 kHz oscillator (external crystal controlled) and 8 bytes of the SRAM (see Table 9, page 16) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format.
An additional 12 bytes of RAM provide status/control of Alarm, Watchdog and Square Wave functions. Addresses and data are transferred serially via a two line, bi-directional I2C interface. The built-in address register is incremented automatically after each WRITE or READ data byte.
The M41ST84Y/W has a built-in power sense circuit which detects power failures and automatical ly switches to the battery supply when a power failure occurs. The energy needed to sustain the SRAM and clock operations can be supplied by a small lithium button-cell supply when a power failure occurs. Functions available to the user include a non-volatile, time-of-day clock/calendar, Alarm interrupts, Watchdog Timer and programmable Square Wave output. Other features include a Power-On Reset as well as an additional input (RSTIN) which can also generate an output Reset (RST). The eight clock address locations contain the century, year, month, date, day, hour, minute, second and tenths/hundredths of a second in 24 hour BCD format. Corrections for 28, 29 (leap year - valid until year 2100), 30 and 31 day months are made automatically.
FEATURES SUMMARY
■ 5.0 OR 3.0V OPERATING VOLTAGE
■ SERIAL INTERFACE SUPPORTS I2C BUS (400 KHz)
■ OPTIMIZED FOR MINIMAL INTERCONNECT TO MCU
■ 2.5 TO 5.5V OSCILLATOR OPERATING VOLTAGE
■ AUTOMATIC SWITCH-OVER and DESELECT CIRCUITRY
■ CHOICE OF POWER-FAIL DESELECT VOLTAGES:
– M41ST84Y:
VCC = 4.5 to 5.5V;
4.20V ≤ VPFD ≤ 4.50V
– M41ST84W:
VCC = 2.7 to 3.6V;
2.55V ≤ VPFD ≤ 2.70V
■ 1.25V REFERENCE (for PFI/PFO)
■ COUNTERS FOR TENTHS/HUNDREDTHS OF SECONDS, SECONDS, MINUTES, HOURS, DAY, DATE, MONTH, YEAR, and CENTURY
■ 44 BYTES OF GENERAL PURPOSE RAM
■ PROGRAMMABLE ALARM and INTERRUPT FUNCTION (VALID EVEN DURING BATTERY BACK-UP MODE)
■ WATCHDOG TIMER
■ MICROPROCESSOR POWER-ON RESET
■ BATTERY LOW FLAG
■ ULTRA-LOW BATTERY SUPPLY CURRENT OF 500 nA (max)
■ OPTIONAL PACKAGING INCLUDES A 28-LEAD SOIC and SNAPHAT® TOP (to be ordered separately)
■ SNAPHAT PACKAGE PROVIDES DIRECT CONNECTION FOR A SNAPHAT TOP, WHICH CONTAINS THE BATTERY and CRYSTAL
M41ST84YMQ产品属性
- 类型
描述
- 型号
M41ST84YMQ
- 功能描述
实时时钟 Serial 512(64x8)
- RoHS
否
- 制造商
Microchip Technology
- 功能
Clock, Calendar. Alarm RTC
- 总线接口
I2C
- M
Y
- MM
SS RTC
- 存储容量
64 B
- 电源电压-最大
5.5 V
- 电源电压-最小
1.8 V
- 最大工作温度
+ 85 C
- 安装风格
Through Hole
- 封装/箱体
PDIP-8
- 封装
Tube
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
STMicroelectronics |
24+ |
16-SO |
35200 |
一级代理/放心采购 |
|||
STMicroelectronics |
25+ |
16-SOIC(0.154 3.90mm 宽) |
9350 |
独立分销商 公司只做原装 诚心经营 免费试样正品保证 |
|||
ST |
22+ |
ST-2017 |
16900 |
支持样品,原装现货,提供技术支持! |
|||
ST/意法 |
24+ |
SOP16 |
60000 |
||||
ST |
24+ |
SOP16 |
16900 |
支持样品,原装现货,提供技术支持! |
|||
ST |
25+ |
ST-2017 |
16900 |
原装,请咨询 |
|||
ST |
2511 |
ST-2017 |
16900 |
电子元器件采购降本 30%!盈慧通原厂直采,砍掉中间差价 |
|||
ST |
2447 |
SOP16 |
100500 |
一级代理专营品牌!原装正品,优势现货,长期排单到货 |
|||
STM |
20+ |
SOP-16 |
1001 |
就找我吧!--邀您体验愉快问购元件! |
|||
ST/意法 |
23+ |
SOP16 |
50000 |
全新原装正品现货,支持订货 |
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Datasheet数据表PDF页码索引
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意法半导体 (STMicroelectronics) 成立于1987年,总部位于瑞士日内瓦和法国巴黎,是一家全球领先的半导体公司。意法半导体专注于设计、制造和销售各种半导体解决方案,产品广泛应用于汽车、工业、消费电子、通信等领域。 意法半导体的产品包括微控制器、模拟集成电路、功率半导体、传感器等。公司拥有多个研发中心和生产基地,致力于技术创新和研发投入。意法半导体在全球范围内拥有广泛的客户群和合作伙伴,为客户提供高品质的产品和解决方案。 公司的使命是通过半导体技术推动智能化和可持续发展,助力客户取得成功。意法半导体不仅注重商业成功,还注重社会责任、环境保护和可持续经营。企业价值观包括创新、尊重