5.0或3.0V , 512位64 ×8串行实时时钟和NVRAM监控 5.0 OR 3.0V, 512 bit 64 x 8 SERIAL RTC and NVRAM SUPERVISOR
Description
The M41ST85W is a combination Serial Real-Time Clock, Microprocessor Supervisor, and NVRAM Supervisor. It is built in a low power CMOS SRAM process and has a 64-byte memory space with 44 bytes of NVRAM and 20 memory-mapped RTC registers see Table 2 on page 20. The RTC registers are configured in binary coded decimal BCD format.
Features
■ Automatic battery switchover and WRITE protect for:
– Internal serial RTC and
– External low power SRAM LPSRAM
■ 400kHz I2C serial interface
■ 3.0/3.3V operating voltage
–VCC= 2.7 to 3.6V
■ Ultra-low battery supply current of 500nA max
■ RoHS compliant
– Lead-free second level interconnect
Serial RTC features
■ 400kHz I2C
■ 44 bytes of general purpose NVRAM
■ Counters for:
– Seconds, minutes, hours, day, date, month, and year
–Century
– 10ths/100ths of seconds
– Clock calibration register allows compensation for crystal variations over temperature
■ Programmable alarm with repeat modes
– Functions in battery back-up mode
■ Power-down timestamp HT Bit
■ 2.5 to 5.5V oscillator operating voltage Microprocessor supervisor features
■ Programmable watchdog
– 62.5ms to 128s time-out period
■ Early power-fail warning circuit PFI/PFO with 1.25V precision reference
■ Power-on reset/low voltage detect
– Open drain reset output
– Reset voltage, VPFD= 2.60V nom
– Two reset input pins
– Watchdog can be steered to reset output
电源电压DC 3.60V max
耗散功率 1000 mW
内存容量 64 B
工作温度Max 85 ℃
工作温度Min -40 ℃
耗散功率Max 1000 mW
电源电压 2.7V ~ 3.6V
电源电压Max 3.6 V
电源电压Min 2.7 V
安装方式 Surface Mount
引脚数 28
封装 SOIC-28
封装 SOIC-28
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
REACH SVHC标准 No SVHC
ECCN代码 EAR99
香港进出口证 NLR
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
M41ST85WMX6 ST Microelectronics 意法半导体 | 当前型号 | 当前型号 |
M41ST85WMH6E 意法半导体 | 完全替代 | M41ST85WMX6和M41ST85WMH6E的区别 |
M41ST85WMH6 意法半导体 | 完全替代 | M41ST85WMX6和M41ST85WMH6的区别 |
M41ST85WMX6TR 意法半导体 | 类似代替 | M41ST85WMX6和M41ST85WMX6TR的区别 |