M41T80 串行实时时钟进入震惊
The M41T80 is a low power Serial RTC with a built-in 32.768kHz oscillator (external crystal controlled). Eight registers (see Table 3: Clock register map on page 14) are used for the clock/calendar function and are configured in binary coded decimal (BCD) format. An additional 12 registers provide status/control of Alarm, 32kHz output, 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.
Functions available to the user include a time-of-day clock/calendar, Alarm interrupts, 32kHz output, and programmable Square Wave output. 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.
M41T80 订购型号:
| Ordering Model | Package | RoHS Compliance Grade | Marketing Status | Memory Organization | Supply Voltage(Vcc) | Supply Voltage(Vcc) | General Description | Programmable Alarms | Square Wave Output(SQW) | Operating Range | Packing Type |
| min | max | ||||||||||
| V | V | ||||||||||
| M41T80M6E | SO8 | Ecopack1 | Active | 160b (20 x 8) | 2 | 5.5 | Serial Access RTC with Alarms | Yes | Yes | Industrial | Tube |
| M41T80M6F | SO8 | Ecopack1 | Active | 160b (20 x 8) | 2 | 5.5 | Serial Access RTC with Alarms | Yes | Yes | Industrial | Tape And Reel |
M41T80 产品特性:
- Counters for tenths/hundredths of seconds,seconds, minutes, hours, day, date, month,year, and century
- 32KHz crystal oscillator integrating load capacitance (12.5pF) providing exceptional oscillator stability and high crystal series resistance operation
- Serial interface supports I2C bus (400kHz)
- 2.0 to 5.5V clock operating voltage
- 32KHz square wave on power-up to drive a microcontroller in low power mode
- Programmable (1Hz to 32KHz) square wave
- Programmable Alarm and Interrupt function
- Low operating current of 200μA
- Operating temperature of –40 to 85°C
- ECOPACK? package available
M41T80 技术支持与电子电路设计开发资源下载
- M41T80 数据手册DataSheet下载.PDF
- 相关产品选型(
Excel 文档格式) - 非易失性RAM产品选择指南 (PDF, 800Kb)
- 串行实时时钟选型指南
- ST和竞争对手Atmel、Macronix、Holtek、Oki、Winbond的对照 (产品彩页, PDF)
- RFID和射频内存产品 . PDF
- 提升灵活性与world'sn ° 1 EEPROM的供应商. PDF
- 意法半导体应用支持. PDF
- 汽车级 半导体器件. PDF
- 周围半导体 机顶盒应用. PDF