Philips Semiconductors
5. Block diagram
PCA9506
40-bit I2C-bus I/O port with RESET, OE, and INT
PCA9506
A0
A1
A2
SCL
SDA
LOW PASS
INPUT
FILTERS
VDD
VSS
RESET
POWER-ON
RESET
OE
8-bit
write pulse 0
read pulse 0
INPUT/
OUTPUT
PORTS
BANK 0
I2C-BUS
CONTROL
BANK 1
BANK 2
BANK 3
8-bit
write pulse 4
read pulse 4
INPUT/
OUTPUT
PORTS
BANK 4
INTERRUPT
MANAGEMENT
LP FILTER
IO0_0
IO0_1
IO0_2
IO0_3
IO0_4
IO0_5
IO0_6
IO0_7
IO4_0
IO4_1
IO4_2
IO4_3
IO4_4
IO4_5
IO4_6
IO4_7
INT
All I/Os are set to inputs at power-up and RESET.
Fig 1. Block diagram of PCA9506
002aab492
9397 750 14939
Product data sheet
Rev. 01 — 14 February 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
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