PCA9555 查看數據表（PDF） - NXP Semiconductors.
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PCA9555 Datasheet PDF : 34 Pages
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NXP Semiconductors
PCA9555
16-bit I2C-bus and SMBus I/O port with interrupt
INT 1
A1 2
A2 3
IO0_0 4
IO0_1 5
IO0_2 6
IO0_3 7
IO0_4 8
IO0_5 9
IO0_6 10
IO0_7 11
VSS 12
PCA9555DB
24 VDD
23 SDA
22 SCL
21 A0
20 IO1_7
19 IO1_6
18 IO1_5
17 IO1_4
16 IO1_3
15 IO1_2
14 IO1_1
13 IO1_0
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Fig 4. Pin configuration for SSOP24
INT 1
A1 2
A2 3
IO0_0 4
IO0_1 5
IO0_2 6
IO0_3 7
IO0_4 8
IO0_5 9
IO0_6 10
IO0_7 11
VSS 12
PCA9555PW
24 VDD
23 SDA
22 SCL
21 A0
20 IO1_7
19 IO1_6
18 IO1_5
17 IO1_4
16 IO1_3
15 IO1_2
14 IO1_1
13 IO1_0
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Fig 5. Pin configuration for TSSOP24
terminal 1
index area
IO0_0 1
IO0_1 2
IO0_2 3
IO0_3 4
IO0_4 5
IO0_5 6
PCA9555BS
18 A0
17 IO1_7
16 IO1_6
15 IO1_5
14 IO1_4
13 IO1_3
terminal 1
index area
IO0_0 1
IO0_1 2
IO0_2 3
IO0_3 4
IO0_4 5
IO0_5 6
PCA9555HF
18 A0
17 IO1_7
16 IO1_6
15 IO1_5
14 IO1_4
13 IO1_3
Transparent top view
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Fig 6. Pin configuration for HVQFN24
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Transparent top view
Fig 7. Pin configuration for HWQFN24
PCA9555_8
Product data sheet
Rev. 08 — 22 October 2009
© NXP B.V. 2009. All rights reserved.
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