參數(shù)資料
型號: PCF8574TDK-T
英文描述: I/O Port
中文描述: I / O端口
文件頁數(shù): 14/24頁
文件大?。?/td> 179K
代理商: PCF8574TDK-T
1997 Feb 13
14
Philips Semiconductors
Product specification
256 to 1024
×
8-bit CMOS EEPROMs with
I
2
C-bus interface
PCF85xxC-2 family
12 WRITE CYCLE LIMITS
Selection of the chip address is achieved by connecting the A0, A1 and A2 inputs to either V
SS
or V
DD
.
13 EXTERNAL CLOCK TIMING
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
E/W cycle timing
t
E/W
E/W cycle time
internal oscillator
external clock
4
7
10
ms
ms
Endurance
N
E/W
E/W cycle per byte
T
amb
=
40 to +85
°
C
T
amb
= 22
°
C
100000
1000000
cycles
cycles
Fig.11 One byte E/W cycle.
handbook, full pagewidth
td
tHIGH
f
r
LOW
t
STOP
1
2
257
PTC
SDA
SCL
MBA697
Fig.12 n bytes E/W cycle (n = 2 to 7).
handbook, full pagewidth
td
tHIGH
f
r
LOW
t
STOP
1
2
PTC
SDA
SCL
MBA698
n x 256 + 1
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