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PCF8570 Datasheet(PDF) 3 Page - NXP Semiconductors |
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PCF8570 Datasheet(HTML) 3 Page - NXP Semiconductors |
3 / 20 page 1999 Jan 06 3 Philips Semiconductors Product specification 256 × 8-bit static low-voltage RAM with I2C-bus interface PCF8570 1 FEATURES • Operating supply voltage 2.5 to 6.0 V • Low data retention voltage; minimum 1.0 V • Low standby current; maximum 15 µA • Power-saving mode; typical 50 nA • Serial input/output bus (I2C-bus) • Address by 3 hardware address pins • Automatic word address incrementing • Available in DIP8 and SO8 packages. 2 APPLICATIONS • Telephony: – RAM expansion for stored numbers in repertory dialling (e.g. PCD33xxA applications) • General purpose RAM for applications requiring extremely low current and low-voltage RAM retention, such as battery or capacitor-backed. • Radio, television and video cassette recorder: – channel presets • General purpose: – RAM expansion for the microcontroller families PCD33xxA, PCF84CxxxA, P80CLxxx and most other microcontrollers. 3 GENERAL DESCRIPTION The PCF8570 is a low power static CMOS RAM, organized as 256 words by 8-bits. Addresses and data are transferred serially via a two-line bidirectional bus (I2C-bus). The built-in word address register is incremented automatically after each written or read data byte. Three address pins, A0, A1 and A2 are used to define the hardware address, allowing the use of up to 8 devices connected to the bus without additional hardware. 4 QUICK REFERENCE DATA 5 ORDERING INFORMATION SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VDD supply voltage 2.5 6.0 IDD supply current (standby) fSCL =0Hz − 15 µA IDDR supply current (power-saving mode) Tamb =25 °C − 400 nA Tamb operating ambient temperature −40 +85 °C Tstg storage temperature −65 +150 °C TYPE NUMBER PACKAGE NAME DESCRIPTION VERSION PCF8570P DIP8 plastic dual in-line package; 8 leads (300 mil) SOT97-1 PCF8570T SO8 plastic small outline package; 8 leads; body width 7.5 mm SOT176-1 |
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Similar Description - PCF8570 |
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