实时时钟芯片
W&S - Real Time Clock Product Table
| Features | EM3027I | EM3027S | V3020 |
|---|---|---|---|
| Supply Voltage | 1.3 to 5.5V | 1.3 to 5.5V | 1.2 to 5.5V |
| Standy Current, 25°C (Over temp) | 350nA | 350nA | 0.4(0.6)uA |
| Operating Temperature Range | -40°C to 125°C | -40°C to 125°C | -40°C to 125°C |
| Embedded Crystal | |||
| Battery Switch Over | * | * | |
| On chip frequency trimming | * | * | |
| Temperature Sensor Readable | * | * | |
| On chip temperature compensation Control | * | * | |
| Trickle charge | * | * | |
| Timer, Alarm, Pulse Interrupts(Clock Output) | 1 IRQ | 1 IRQ | * |
| Interface | 12C | SPI | 1-bit serial |
| User RAM and/or E2 PROM |
E2PROM 2 bytes RAM 8 Bytes |
E2PROM 2 bytes RAM 8 Bytes |
|
| Package | SO-8 TSSOP8 |
TSSOP14 | SO-8 TSSOP-8 |
| Downloads | Datasheet Factsheet | Datasheet Factsheet | |
General Features:
- Oscillator working with 32kHz crystal
- Digital trimming for temperature compensation
- No external component needed
- Sleep mode capability
- BCD output of second, minute, hour, day, date, week number, month and year
- Leap year correction
- Low power consumption