The PCF8594C-2T/02,112 is a 512 x 8-bit CMOS floating gate Electrically Erasable Programmable Read-Only Memory (EEPROM) with I²C-bus interface and 4kB non-volatile storage. By using an internal redundant storage code, it is fault tolerant to single bit errors. This feature dramatically increases the reliability compared to conventional EEPROMs. Power consumption is low due to the full CMOS technology used. The programming voltage is generated on-chip, using a voltage multiplier. Data bytes are received and transmitted via the serial I²C-bus. Up to four PCF8594C-2 devices may be connected to the I²C-bus. Chip select is accomplished by two address inputs. Timing of the E/W cycle is carried out internally, thus no external components are required. Programming time control (PTC), pin-7, must be connected to either VDD or left open-circuit. There is an option of using an external clock for timing the length of an E/W cycle.
● Low power CMOS - 2mA maximum operating current
● Single supply with full operation down to 2.5V
● On-chip voltage multiplier
● Write operations - Byte write mode and 8-byte page write mode
● Read operations - sequential read and random read
● Internal timer for writing
● Internal power-on reset
● 0 to 100kHz Clock frequency
● High reliability by using a redundant storage code
● Endurance - 1000000 erase/write cycles at Tamb = 22°C
● 10 Years non-volatile data retention time
● Latch-up testing is done to JEDEC standard JESD78 which exceeds 100mA
