PCF8570P データシートの表示（PDF） - Philips Electronics
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PCF8570P Datasheet PDF : 20 Pages
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Philips Semiconductors
256 × 8-bit static low-voltage RAM with
I2C-bus interface
Product specification
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
SYMBOL
VDD
IDD
IDDR
Tamb
Tstg
PARAMETER
supply voltage
supply current (standby)
supply current (power-saving mode)
operating ambient temperature
storage temperature
CONDITIONS
fSCL = 0 Hz
Tamb = 25 °C
5 ORDERING INFORMATION
TYPE
NUMBER
PCF8570P
PCF8570T
NAME
DIP8
SO8
PACKAGE
DESCRIPTION
plastic dual in-line package; 8 leads (300 mil)
plastic small outline package; 8 leads; body width 7.5 mm
MIN. MAX. UNIT
2.5 6.0
−
15 µA
−
400 nA
−40 +85 °C
−65 +150 °C
VERSION
SOT97-1
SOT176-1
1999 Jan 06
3
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