
NXP Semiconductors
PCA9632
4-bit Fm+ I 2 C-bus low power LED driver
5. Block diagram
10-pin version
PCA9632
A0
A1
SCL
INPUT FILTER
SDA
I 2 C-BUS
CONTROL
V DD
V SS
POWER-ON
RESET
LED
V DD
STATE
SELECT
REGISTER
PWM
REGISTER X
BRIGHTNESS
CONTROL
24 Hz
LEDn
6.25 kHz/
1.56 kHz
GRPFREQ
REGISTER
to
0.09 Hz
GRPPWM
MUX/
CONTROL
400 kHz
OSCILLATOR
190 Hz
REGISTER
'0' – permanently OFF
'1' – permanently ON
002aad039
Fig 1.
Block diagram of PCA9632
PCA9632
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 5 — 27 July 2011
? NXP B.V. 2011. All rights reserved.
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