|
 |
产品名称：M41T64
产品封装：QFN-16
产品品牌：STMicroelectronics
PDF文档：下载
库 存：查看
电 话：0755-83035811
|
产品介绍
M41T64
Features
- Serial real-time clock (RTC) with alarm functions
- 400 kHz I2C serial interface
- Memory mapped registers for seconds, minutes, hours, day, date, month, year, and century
- Tenths/hundredths of seconds register
- 350 nA timekeeping current at 3 V
- Timekeeping down to 1.0 V
- 1.3 V to 4.4 V I2C bus operating voltage
- 4.4 V max VCCsuitable for lithium-ion battery operation
- Low operating current of 35 μA (at 400 kHz)
- 32 KHz square wave output is on at power-up. Suitable for driving a microcontroller in low-power mode. Can be disabled. (M41T62/63/64)
- Programmable 1 Hz to 32 KHz square wave output (M41T62/63/64)
- Programmable alarm with interrupt function (M41T62/65)
- 32 KHz crystal oscillator integrates crystal load capacitors, works with high series resistance crystals
- Oscillator stop detection monitors clock operation
- Accurate programmable watchdog
- 62.5 ms to 31 min timeout
- Software clock calibration. Can adjust timekeeping to within ±2 parts per million (±5 seconds per month)
- Automatic leap year compensation
- –40 to +85 °C operation
- Two package options:
- Very small 3 mm x 3 mm, lead-free & halogen-free (ECOPACK2®) 16-lead QFN
- Ultra-small 1.5 mm x 3.2 mm, lead-free & halogen-free (ECOPACK2®) 8-pin ceramic leadless chip carrier with embedded 32 KHz crystal - no external oscillator components required (M41T62)
|
