參數資料
型號: MCP23008
廠商: Microchip Technology Inc.
英文描述: 8-Bit I/O Expander with Serial Interface
中文描述: 8位的I / O串行接口擴展
文件頁數: 26/40頁
文件大?。?/td> 498K
代理商: MCP23008
MCP23008/MCP23S08
DS21919B-page 26
2005 Microchip Technology Inc.
FIGURE 2-5:
SPI INPUT TIMING
109
Output Valid From Clock:
100 kHz mode
400 kHz mode
1.7 MHz mode
Bus Free Time:
100 kHz mode
400 kHz mode
1.7 MHz mode
Bus Capacitive Loading:
100 kHz and 400 kHz
1.7 MHz
Input Filter Spike
Suppression: (SDA and SCL)
100 kHz and 400 kHz
1.7 MHz
This parameter is characterized, not 100% tested.
C
B
is specified to be from 10 to 400 pF.
T
AA
3.45
0.9
0.18
μs
μs
μs
1.8V – 5.5V (I-Temp)
2.7V – 5.5V (I-Temp)
4.5V – 5.5V (E-Temp)
110
T
BUF
4.7
1.3
N/A
N/A
μs
μs
μs
1.8V – 5.5V (I-Temp)
2.7V – 5.5V (I-Temp)
4.5V – 5.5V (E-Temp)
C
B
400
100
pF
pF
(Note 1)
(Note 1)
T
SP
50
10
ns
ns
Spike suppression off
TABLE 2-2:
I
2
C BUS DATA REQUIREMENTS (SLAVE MODE) (CONTINUED)
I
2
C AC Characteristics
Operating Conditions (unless otherwise indicated):
1.8V
V
DD
5.5V at -40
°
C
T
A
+85
°
C (I-Temp)
4.5V
V
DD
5.5V at -40
°
C
T
A
+125
°
C (E-Temp)
(Note 1)
R
PU
(SCL, SDA) = 1 k
Ω
, C
L
(SCL, SDA) = 135 pF
Param
No.
Characteristic
Sym
Min
Typ
Max
Units
Conditions
Note 1:
2:
CS
SCK
SI
SO
1
5
4
7
6
3
10
2
LSb in
MSb in
high-impedance
11
Mode 1,1
Mode 0,0
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