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PCF85 数据表(PDF) 3 Page - Integrated Circuit Systems |
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PCF85 数据表(HTML) 3 Page - Integrated Circuit Systems |
3 / 24 page 1997 Feb 13 3 Philips Semiconductors Product specification 256 to 1024 × 8-bit CMOS EEPROMs with I2C-bus interface PCF85xxC-2 family 1 FEATURES • Low power CMOS: – maximum operating current: 2.0 mA (PCF8582C-2) 2.5 mA (PCF8594C-2) 4.0 mA (PCF8598C-2) – maximum standby current 10 µA (at 6.0 V), typical 4 µA • Non-volatile storage of: – 2 kbits organized as 256 × 8-bit (PCF8582C-2) – 4 kbits organized as 512 × 8-bit (PCF8594C-2) – 8 kbits organized as 1024 × 8-bit (PCF8598C-2) • Single supply with full operation down to 2.5 V • On-chip voltage multiplier • Serial input/output I2C-bus • Write operations: – byte write mode – 8-byte page write mode (minimizes total write time per byte) • Read operations: – sequential read – random read • Internal timer for writing (no external components) • Power-on-reset • High reliability by using a redundant storage code • Endurance: 1000000 Erase/Write (E/W) cycles at Tamb =22 °C • 10 years non-volatile data retention time • Pin and address compatible to: PCF8570, PCF8571, PCF8572 and PCF8581. 2 GENERAL DESCRIPTION The PCF85xxC-2 is a family of floating gate Electrically Erasable Programmable Read Only Memories (EEPROMs) with 2, 4 and 8 kbits (256, 512 and 1024 × 8-bit). 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. As data bytes are received and transmitted via the serial I2C-bus, a package using eight pins is sufficient. Up to eight PCF85xxC-2 devices may be connected to the I2C-bus. Chip select is accomplished by three address inputs (A0, A1 and A2). Timing of the E/W cycle is carried out internally, thus no external components are required. Pin 7 (PTC) 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. 3 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VDD supply voltage 2.5 6.0 V IDDR supply current read fSCL = 100 kHz VDD = 2.5 V − 60 µA VDD =6V − 200 µA IDDW supply current E/W fSCL = 100 kHz PCF8582C-2 VDD = 2.5 V − 0.6 mA VDD =6V − 2.0 mA PCF8594C-2 VDD = 2.5 V − 0.8 mA VDD =6V − 2.5 mA PCF8598C-2 VDD = 2.5 V − 1.0 mA VDD =6V − 4.0 mA IDD(stb) standby supply current VDD = 2.5 V − 3.5 µA VDD =6V − 10 µA |
类似零件编号 - PCF85 |
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类似说明 - PCF85 |
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