PCA9535A 查看數據表（PDF） - NXP Semiconductors.
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PCA9535A Datasheet PDF : 38 Pages
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NXP Semiconductors
4. Block diagram
PCA9535A
Low-voltage 16-bit I2C-bus I/O port with interrupt
PCA9535A
A0
A1
A2
SCL
SDA
INPUT
FILTER
VDD
POWER-ON
RESET
8-bit
write pulse
I2C-BUS/SMBus
CONTROL
read pulse
INPUT/
OUTPUT
PORTS
8-bit
write pulse
read pulse
INPUT/
OUTPUT
PORTS
P1_0
P1_1
P1_2
P1_3
P1_4
P1_5
P1_6
P1_7
P0_0
P0_1
P0_2
P0_3
P0_4
P0_5
P0_6
P0_7
VDD
VSS
LP
INT
FILTER
Remark: All I/Os are set to inputs at reset.
Fig 1. Block diagram of PCA9535A
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5. Pinning information
5.1 Pinning
PCA9535A
Product data sheet
INT 1
A1 2
A2 3
P0_0 4
P0_1 5
P0_2 6
P0_3 7
P0_4 8
P0_5 9
P0_6 10
P0_7 11
VSS 12
PCA9535APW
24 VDD
23 SDA
22 SCL
21 A0
20 P1_7
19 P1_6
18 P1_5
17 P1_4
16 P1_3
15 P1_2
14 P1_1
13 P1_0
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terminal 1
index area
PCA9535AHF
P0_0 1
P0_1 2
P0_2 3
P0_3 4
P0_4 5
P0_5 6
18 A0
17 P1_7
16 P1_6
15 P1_5
14 P1_4
13 P1_3
Transparent top view
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Fig 2. Pin configuration for TSSOP24
Fig 3. Pin configuration for HWQFN24
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 11 September 2012
© NXP B.V. 2012. All rights reserved.
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