pca9922 NXP Semiconductors, pca9922 Datasheet - Page 12
pca9922
Manufacturer Part Number
pca9922
Description
8-channel Constant Current Led Driver With Output Error Detection
Manufacturer
NXP Semiconductors
Datasheet
1.PCA9922.pdf
(26 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
pca9922PW
Manufacturer:
NXP/恩智浦
Quantity:
20 000
Part Number:
pca9922PW,118
Manufacturer:
NXP/恩智浦
Quantity:
20 000
NXP Semiconductors
8. Application design-in information
PCA9922_1
Product data sheet
Fig 10. Typical application
Fig 11. The PCA9922 in a typical multi-device architecture
V
DD
MICROCONTROLLER
CPU
scan
10 F
8-channel constant current LED driver with output error detection
C
Rev. 01 — 15 January 2009
R_EXT
LED0
SDI
OE
CLK
LE
SDI
OE
CLK
LE
SDI
R_EXT
R_EXT
LED1
CLK
PCA9922
PCA9922
LED2
V
V
LE
SS
SS
PCA9922
LED3
SDO
SDO
V
LED0
LED7
LED0
LED7
SS
BLANKING
INPUT
LED7
PWM
OE
OR
V
V
O
O
V
SDO
DD
V
V
I
I
R
V
5 V
3.3 V to 5.5 V
to next stage
SDO from last stage
+
CE
PCA9922
© NXP B.V. 2009. All rights reserved.
002aad312
V
LED
= 3 V
002aad504
4 V
12 of 26
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