Description
The
Microchip
Technology
Inc.47L04/47C04/47L16/47C16 (47XXX) is a 4/16 Kbit
SRAM with EEPROM backup.The device is organized
as 512 x 8 bits or 2,048 x 8 bits of memory and utilizes the I2C serial interface.The 47XXX provides infinite
read and write cycles to the SRAM while EEPROM
cells provide high-endurance nonvolatile storage of
data.With an external capacitor, SRAM data is
automatically transferred to the EEPROM upon loss of
power.Data can also be transferred manually by usin
Features
- 4 Kbit/16 Kbit SRAM with EEPROM Backup:
- Internally organized as 512 x 8 bits (47X04) or 2,048 x 8 bits (47X16)
- Automatic Store to EEPROM array upon power-down (using optional external capacitor)
- Automatic Recall to SRAM array upon power-up
- Hardware Store pin for manual Store operations
- Software commands for initiating Store and Recall operations
- Store time 8 ms maximum (47X04) or 25 ms maximum (47X16).
- Nonvolatile External Event Detect Flag.
- High.