PCA9502 Datasheet, PDF (2/25 Pages) NXP Semiconductors – 8-bit I/O expander with I2C-bus/SPI interface

NXP Semiconductors
PCA9502
8-bit I/O expander with I²C-bus/SPI interface
4. Ordering information
Table 1. Ordering information
Type number Package
Name
Description
Version
PCA9502BS
HVQFN24 plastic thermal enhanced very thin quad flat package; SOT616-3
no leads; 24 terminals; body 4 × 4 × 0.85 mm
5. Block diagram
V_DD
RESET
SCL
SDA
A0
A1
IRQ
1 kΩ (3.3 V)
1.5 kΩ (2.5 V)
PCA9502
I²C-BUS
V_DD
V_DD
I2C/SPI
GPIO
REGISTER
V_SS
002aab837
Fig 1. Block diagram of PCA9502 I²C-bus interface
8
GPIO[7:0]
V_DD
RESET
SCLK
CS
SO
SI
IRQ
1 kΩ (3.3 V)
1.5 kΩ (2.5 V)
V_DD
PCA9502
SPI
I2C/SPI
GPIO
REGISTER
V_SS
Fig 2. Block diagram of PCA9502 SPI interface
002aab838
8
GPIO[7:0]
PCA9502_3
Product data sheet
Rev. 03 — 13 October 2006
© NXP B.V. 2006. All rights reserved.
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