PCA9502 データシートの表示（PDF） - NXP Semiconductors.
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PCA9502 Datasheet PDF : 25 Pages
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NXP Semiconductors
10. SPI operation
PCA9502
8-bit I/O expander with I2C-bus/SPI interface
SCLK
SI
R/W A3 A2 A1 A0 0 0 X D7 D6 D5 D4 D3 D2 D1 D0
002aab925
R/W = 0; A[3:0] = register address
a. Register write
SCLK
SI
R/W A3 A2 A1 A0 0 0 X
SO
R/W = 1; A[3:0] = register address
b. Register read
Fig 12. SPI operation
D7 D6 D5 D4 D3 D2 D1 D0
002aab926
Table 13.
Bit
7
6:3
2:1
0
Register address byte (SPI)
Name
Function
R/W
1: read from PCA9502
0: write to PCA9502
A[3:0]
internal register select
-
not used, set to 0
-
not used
11. Limiting values
Table 14. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
Conditions
Min
Max
Unit
VDD
VI
II
IO
Ptot
P/out
supply voltage
input voltage
input current
output current
total power dissipation
power dissipation per output
any input
any input
any output
−0.3
+4.6
V
−0.3
+5.5[1]
V
−10
+10
mA
−10
+10
mA
-
300
mW
-
50
mW
Tamb
Tstg
ambient temperature
storage temperature
−40
+85
°C
−65
+150
°C
[1] 5.5 V steady state voltage tolerance on inputs and outputs is valid only when the supply voltage is present.
4.6 V steady state voltage tolerance on inputs and outputs when no supply voltage is present.
PCA9502_3
Product data sheet
Rev. 03 — 13 October 2006
© NXP B.V. 2006. All rights reserved.
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