pca9632 NXP Semiconductors, pca9632 Datasheet - Page 24

• Manufacturer Part Number: pca9632
• Description: Pca9632 4-bit Fm I?c-bus Low Power Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
14. Test information
PCA9632_1
Objective data sheet
Fig 20. Definition of timing
Fig 21. I
SDA
SCL
Rise and fall times refer to V
2
C-bus timing diagram
P
protocol
t
SDA
SCL
BUF
S
t
SU;STA
Fig 22. Test circuitry for switching times
t
BUF
condition
t
START
HD;STA
t
LOW
(S)
t
HD;STA
IL
R
C
R
generators.
L
L
T
and V
= Load resistor for LEDn. R
= Load capacitance includes jig and probe capacitance.
= Termination resistance should be equal to the output impedance Z
t
LOW
t
r
t
t
r
HD;DAT
MSB
bit 7
(A7)
IH
.
t
HIGH
Rev. 01 — 28 September 2007
GENERATOR
t
SU;DAT
t
f
PULSE
t
1 / f
HIGH
bit 6
(A6)
SCL
t
t
HD;DAT
f
L
t
SU;DAT
for SDA and SCL > 1 k (3 mA or less current).
V
I
bit 1
(D1)
R T
t
VD;DAT
DUT
V
DD
4-bit Fm+ I
Sr
(D0)
bit 0
V
O
t
SU;STA
t
t
VD;ACK
HD;STA
acknowledge
C L
50 pF
2
R L
500
C-bus low power LED driver
(A)
002aab284
t
SU;STO
002aab285
V
open
GND
o
DD
t
of the pulse
SP
condition
t
SU;STO
STOP
PCA9632
(P)
© NXP B.V. 2007. All rights reserved.
002aaa986
P
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