PCA9500BS,118 NXP Semiconductors, PCA9500BS,118 Datasheet - Page 5

• Manufacturer Part Number: PCA9500BS,118
• Description: IC I/O EXPANDER I2C 8B 16HVQFN
• Manufacturer: NXP Semiconductors

Specifications of PCA9500BS,118

• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: No
• Frequency - Clock: 400kHz
• Voltage - Supply: 2.5 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-VQFN Exposed Pad, 16-HVQFN, 16-SQFN, 16-DHVQFN
• Includes: EEPROM, POR
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3351-2; 935273812118; PCA9500BS-T

NXP Semiconductors
7. Functional description
PCA9500_4
Product data sheet
7.1 Device addressing
7.2 Control register
Refer also to
Following a START condition, the bus master must output the address of the slave it is
accessing. The address of the PCA9500 is shown in
are incorporated on the hardware selectable address pins.
The last bit of the address byte defines the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
The PCA9500 contains a single 8-bit register called the Control register, which can be
written and read via the I
of the slave address. It contains the I/O operation information.
Fig 5.
Fig 6.
data from shift register
a. I/O expander
data to shift register
0
Simplified schematic diagram of each I/O
PCA9500 slave addresses
power-on reset
1
fixed
Figure 1 “Block diagram of
write pulse
read pulse
slave address
0
0
programmable
A2
Rev. 04 — 15 April 2009
hardware
2
C-bus. This register is sent after a successful acknowledgment
A1
002aae589
A0 R/W
D
CI
8-bit I
FF
S
Q
2
C-bus and SMBus I/O port with 2-kbit EEPROM
PCA9500”.
D
CI
FF
S
Q
b. Memory
Figure
1
100 A
0
fixed
6. Internal pull-up resistors
slave address
1
002aae588
0
programmable
A2
hardware
PCA9500
© NXP B.V. 2009. All rights reserved.
A1
V
IO0 to IO7
V
to interrupt logic
DD
SS
002aae590
A0 R/W
5 of 26