PCF8570 Philips Semiconductors, PCF8570 Datasheet - Page 3

• Manufacturer Part Number: PCF8570
• Description: 256 x 8-bit static low-voltage RAM with I2C-bus interface
• Manufacturer: Philips Semiconductors

Philips Semiconductors
1
2
4
5
1999 Jan 06
V
I
I
T
T
PCF8570P
PCF8570T
DD
DDR
amb
stg
Operating supply voltage 2.5 to 6.0 V
Low data retention voltage; minimum 1.0 V
Low standby current; maximum 15 A
Power-saving mode; typical 50 nA
Serial input/output bus (I
Address by 3 hardware address pins
Automatic word address incrementing
Available in DIP8 and SO8 packages.
Telephony:
– RAM expansion for stored numbers in repertory
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
DD
256
I
2
NUMBER
SYMBOL
FEATURES
APPLICATIONS
QUICK REFERENCE DATA
ORDERING INFORMATION
C-bus interface
dialling (e.g. PCD33xxA applications)
PCD33xxA, PCF84CxxxA, P80CLxxx and most other
microcontrollers.
TYPE
8-bit static low-voltage RAM with
supply voltage
supply current (standby)
supply current (power-saving mode)
operating ambient temperature
storage temperature
NAME
DIP8
SO8
2
C-bus)
plastic dual in-line package; 8 leads (300 mil)
plastic small outline package; 8 leads; body width 7.5 mm
PARAMETER
3
DESCRIPTION
3
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 (I
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.
PACKAGE
GENERAL DESCRIPTION
f
T
SCL
amb
= 0 Hz
= 25 C
CONDITIONS
2
C-bus). The built-in word address
2.5
MIN.
40
65
Product specification
PCF8570
6.0
15
400
+85
+150
MAX.
SOT176-1
VERSION
SOT97-1
nA
UNIT
C
C
A