pca9634 NXP Semiconductors, pca9634 Datasheet - Page 4
pca9634
Manufacturer Part Number
pca9634
Description
Pca9634 8-bit Fm I2c-bus Led Driver
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9634.pdf
(37 pages)
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5. Block diagram
PCA9634_4
Product data sheet
Fig 1. Block diagram of PCA9634
SDA
SCL
V
V
OE
DD
SS
Remark: Only one LED output shown for clarity.
PCA9634
OSCILLATOR
25 MHz
97 kHz
INPUT FILTER
POWER-ON
RESET
24.3 kHz
BRIGHTNESS
REGISTER X
CONTROL
PWM
REGISTER
GRPFREQ
A0
190 Hz
A1
Rev. 04 — 5 January 2007
A2
CONTROL
I
2
C-BUS
A3
A4
A5
REGISTER
GRPPWM
A6
'0' – permanently OFF
'1' – permanently ON
REGISTER
SELECT
STATE
LED
8-bit Fm+ I
CONTROL
MUX/
PCA9634
2
© NXP B.V. 2007. All rights reserved.
C-bus LED driver
V
DD
002aac135
LEDn
4 of 37
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