PCA9501D,112 NXP Semiconductors, PCA9501D,112 Datasheet - Page 5

• Manufacturer Part Number: PCA9501D,112
• Description: IC I/O EXPANDER I2C 8B 20SOIC
• Manufacturer: NXP Semiconductors

Specifications of PCA9501D,112

• Interface: I²C, SMBus
• Number Of I /o: 8
• Interrupt Output: Yes
• Frequency - Clock: 400kHz
• Voltage - Supply: 2.5 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Includes: EEPROM
• For Use With: OM6285 - EVAL BOARD I2C-2002-1A568-4002 - DEMO BOARD I2C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 568-3353-5; 935272364112; PCA9501D

NXP Semiconductors
7. Functional description
PCA9501_4
Product data sheet
7.1 Device addressing
Refer also to
Following a START condition, the bus master must output the address of the slave it is
accessing. The address of the PCA9501 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.
Remark: Reserved I
with:
Fig 5.
Fig 6.
•
•
•
•
Reserved for future use I
Slave devices that use the 10-bit addressing scheme (1111 0xx)
Slave devices that are designed to respond to the General Call address (0000 000)
Hs-mode master code (0000 1xx)
data from shift register
a. I/O expander
fixed
data to shift register
0
Simplified schematic diagram of each I/O
PCA9501 slave addresses
power-on reset
A5
Figure 1 “Block diagram of
hardware programmable
write pulse
read pulse
slave address
A4
A3
2
Rev. 04 — 10 February 2009
8-bit I
C-bus addresses must be used with caution since they can interfere
A2
A1
2
C-bus and SMBus I/O port with interrupt, 2-kbit EEPROM
2
C-bus addresses (0000 011, 1111 1xx)
002aac002
D
CI
A0 R/W
FF
S
Q
PCA9501”.
D
CI
FF
S
Q
b. Memory
fixed
Figure
1
A5
hardware programmable
6. Internal pull-up resistors
slave address
A4
100 A
A3
002aac001
A2
PCA9501
© NXP B.V. 2009. All rights reserved.
A1
V
IO0 to IO7
V
to interrupt logic
DD
SS
002aac003
A0 R/W
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