PCF8570 is a 256×8-bit static low-voltage RAM with I2C-bus interface manufactured by Philips Semiconductors.
The Philips PCF8570 is a static low‑voltage RAM with an I²C‑bus interface, offering 256 × 8‑bit memory organized as 256 words. It is suited for telephony, video‑cassette recorders, and general‑purpose low‑power RAM expansion.
The device operates from 2.5 V to 6.0 V, consumes as little as 50 nA in power‑saving mode, and is available in DIP8 and SO8 packages. Detailed electrical characteristics, pin assignments, and timing diagrams are included in the datasheet.
| Memory size | 256 × 8‑bit static RAM |
|---|---|
| Supply voltage (operating) | 2.5 V to 6.0 V |
| Standby current (max) | 15 µA |
| Power‑saving current (typical) | 50 nA |
| Operating temperature range | -40 °C to +85 °C |
| Storage temperature range | -65 °C to +150 °C |
| Package types | DIP8 (PCF8570P) and SO8 (PCF8570T) |
| Package types | SO8 (PCF8570T) |
| Absolute maximum supply voltage (pin 8) | -0.8 V to +8.0 V |
It provides 256 × 8‑bit static low‑voltage RAM, i.e., 256 bytes of memory.
The device operates from 2.5 V up to 6.0 V.
It is offered in a DIP8 package (PCF8570P) and a SO8 package (PCF8570T).
Typical power‑saving current is 50 nA.