serial real-time clock with 44 bytes NVRAM and reset 16 kbit, 8 kbit, 4 kbit, 2 kbit and 1 kbit serial I²C bus EEPROM 5V or 3V NVRAM supervisor for up to two LPSRAMs 5V or 3V NVRAM supervisor for up to 8 LPSRAMs serial real-time clock 逻辑IC
16 kbit, 8 kbit, 4 kbit, 2 kbit and 1 kbit serial I²C bus EEPROM 512 kbit and 256 kbit serial I²C bus EEPROM with three Chip Enable lines 512 kbit and 256 kbit serial I²C bus EEPROM with three Chip Enable lines 型DC - DC电压转换 16 kbit, 8 kbit, 4 kbit, 2 kbit and 1 kbit serial I²C bus EEPROM 型DC - DC电压转换