PCA9555PW NXP Semiconductors, PCA9555PW Datasheet - Page 3

• Manufacturer Part Number: PCA9555PW
• Description: IC, I2C-BUS AND SMBUS I/O PORT, TSSOP24
• Manufacturer: NXP Semiconductors

Specifications of PCA9555PW

• Chip Configuration: 16 Bit
• Bus Frequency: 400kHz
• Ic Interface Type: I2C
• No. Of I/o's: 16
• Supply Voltage Range: 2.3V To 5.5V
• Digital Ic Case Style: TSSOP
• No. Of Pins: 24
• Termination Type: SMD
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
4. Block diagram
5. Pinning information
PCA9555_8
Product data sheet
5.1 Pinning
Fig 1.
Fig 2.
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
INT
A1
A2
Remark: All I/Os are set to inputs at reset.
Block diagram of PCA9555
SS
Pin configuration for DIP24
10
11
12
1
2
3
4
5
6
7
8
9
PCA9555
PCA9555N
POWER-ON
Rev. 08 — 22 October 2009
RESET
FILTER
INPUT
002aac697
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.
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
Pin configuration for SO24
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. 2009. 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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