參數(shù)資料
型號(hào): PCF8570
廠商: NXP Semiconductors N.V.
英文描述: 256 x 8-bit static low-voltage RAM with I2C-bus interface
中文描述: 256 × 8位靜態(tài)低電壓內(nèi)存具有I2C總線接口
文件頁(yè)數(shù): 4/20頁(yè)
文件大?。?/td> 140K
代理商: PCF8570
1999 Jan 06
4
Philips Semiconductors
Product specification
256
×
8-bit static low-voltage RAM with
I
2
C-bus interface
PCF8570
6
BLOCK DIAGRAM
Fig.1 Block diagram.
handbook, full pagewidth
MLB928
WORD
ADDRESS
REGISTER
SHIFT
REGISTER
POWER
ON
RESET
INPUT
FILTER
ROW
SELECT
MEMORY
CELL
ARRAY
COLUMN
SELECT
MULTIPLEXER
R/W
CONTROL
I C BUS
CONTROL
6
5
SCL
SDA
3
A2
2
A1
1
A0
8
VDD
4
VSS
TEST
7
PCF8570
7
8
7
PINNING
SYMBOL
PIN
DESCRIPTION
A0
A1
A2
V
SS
SDA
SCL
TEST
1
2
3
4
5
6
7
hardware address input 0
hardware address input 1
hardware address input 2
negative supply
serial data input/output
serial clock input
Input for power-saving mode (see section
“Power-saving mode”). Also used as a test output
during manufacture. TEST should be tied to V
SS
during normal operation.
positive supply
V
DD
8
Fig.2 Pin configuration.
page
1
2
3
4
8
7
6
5
MLB929
PCF8570
SCL
SDA
A2
A1
A0
VDD
VSS
TEST
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