pca9555bs NXP Semiconductors, pca9555bs Datasheet - Page 3

• Manufacturer Part Number: pca9555bs
• Description: 16-bit I2c And Smbus I/o Port With Interrupt
• Manufacturer: NXP Semiconductors

NXP Semiconductors
4. Block diagram
5. Pinning information
PCA9555_7
Product data sheet
5.1 Pinning
Fig 1. Block diagram of PCA9555
Fig 2. Pin configuration for DIP24
SDA
SCL
V
V
A0
A1
A2
DD
SS
IO0_0
IO0_1
IO0_2
IO0_3
IO0_4
IO0_5
IO0_6
IO0_7
V
Remark: All I/Os are set to inputs at reset.
INT
A1
A2
SS
10
11
12
1
2
3
4
5
6
7
8
9
PCA9555
PCA9555N
POWER-ON
RESET
FILTER
INPUT
002aac697
Rev. 07 — 5 June 2007
24
23
22
21
20
19
18
17
16
15
14
13
V
SDA
SCL
A0
IO1_7
IO1_6
IO1_5
IO1_4
IO1_3
IO1_2
IO1_1
IO1_0
DD
I
2
16-bit I
C-BUS/SMBus
CONTROL
2
Fig 3. Pin configuration for SO24
C-bus and SMBus I/O port with interrupt
IO0_0
IO0_1
IO0_2
IO0_3
IO0_4
IO0_5
IO0_6
IO0_7
write pulse
write pulse
read pulse
read pulse
V
INT
A1
A2
SS
8-bit
8-bit
10
11
12
1
2
3
4
5
6
7
8
9
PCA9555D
OUTPUT
OUTPUT
PORTS
PORTS
INPUT/
INPUT/
LP filter
002aac702
002aac698
PCA9555
© NXP B.V. 2007. All rights reserved.
24
23
22
21
20
19
18
17
16
15
14
13
V
DD
V
SDA
SCL
A0
IO1_7
IO1_6
IO1_5
IO1_4
IO1_3
IO1_2
IO1_1
IO1_0
DD
IO1_0
IO1_2
IO0_0
IO0_2
IO1_1
IO1_3
IO1_4
IO1_5
IO1_6
IO1_7
IO0_1
IO0_3
IO0_4
IO0_5
IO0_6
IO0_7
INT
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