pca9685 NXP Semiconductors, pca9685 Datasheet - Page 41

• Manufacturer Part Number: pca9685
• Description: 16-channel, 12-bit Pwm Fm+ I 2c-bus Led Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9685_1
Product data sheet
Fig 31. Definition of timing
SDA
SCL
P
t
BUF
S
Fig 32. I
Fig 33. t
protocol
t
SDA
SCL
HD;STA
t
LOW
Rise and fall times refer to V
2
PLZ
C-bus timing diagram
t
SU;STA
, t
t
t
t
BUF
r
HD;DAT
condition
PZL
START
(S)
t
HD;STA
HIGH-to-OFF
OFF-to-HIGH
OFF-to-LOW
LOW-to-OFF
LEDn output
LEDn output
and t
OE input
t
PHZ
LOW
Rev. 01 — 24 July 2008
t
r
t
HIGH
MSB
bit 7
(A7)
, t
PZH
V
V
t
V
V
V
HIGH
OH
DD
SS
OL
SS
V
I
t
f
times
IL
t
and V
16-channel, 12-bit PWM Fm+ I
SU;DAT
t
SU;DAT
t
f
1 / f
enabled
outputs
V
bit 6
(A6)
t
IH
M
SCL
PLZ
t
PHZ
.
t
HD;DAT
V
X
V
Y
Sr
(D1)
disabled
bit 1
outputs
t
SU;STA
t
t
VD;DAT
HD;STA
V
t
PZL
t
M
PZH
bit 0
(D0)
V
M
V
002aad810
t
VD;ACK
M
2
enabled
outputs
t
C-bus LED controller
SP
acknowledge
t
SU;STO
PCA9685
© NXP B.V. 2008. All rights reserved.
(A)
t
SU;STO
002aab285
002aaa986
P
condition
STOP
(P)
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