PCA9922BS NXP [NXP Semiconductors], PCA9922BS Datasheet - Page 16

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

NXP Semiconductors
[2]
[3]
PCA9922_1
Product data sheet
OE must be held active LOW for at least the duration of the rise/fall time of the LEDn pins. This pulse width does not apply to
active LOW times for executing error detect sequences.
Timing required for signaling of error detection sequences. Not necessary for ‘normal’ operation.
Fig 12. Timing 1
Fig 13. LED[7:0] rise/fall timing
SDI
OE
LE
CLK
8-channel constant current LED driver with output error detection
LEDn
Rev. 01 — 15 January 2009
50 %
50 %
50 %
t
t
t
su(SDI)
su(OE)
su(LE)
SDO
t
t
t
h(SDI)
h(OE)
h(LE)
50 %
t
f
50 %
50 %
50 %
t
w(CLKH)
90 %
10 %
f
CLK
10 %
90 %
t
PD(CLK-SDO)
t
w(CLKL)
50 %
t
r
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PCA9922
© NXP B.V. 2009. All rights reserved.
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