PCA9922BS NXP [NXP Semiconductors], PCA9922BS Datasheet - Page 12

• Manufacturer Part Number: PCA9922BS
• Description: 8-channel constant current LED driver with output error detection
• Manufacturer: NXP [NXP Semiconductors]

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
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