CAT9532 ONSEMI [ON Semiconductor], CAT9532 Datasheet - Page 11

• Manufacturer Part Number: CAT9532
• Description: 16-bit Programmable LED Dimmer with I2C Interface
• Manufacturer: ONSEMI [ON Semiconductor]

External Reset Operation
The CAT9532 registers and the I
initialized to their default state when the RESET input
is held low for a minimum of t
timing is shown in Figure 9.
Figure 8. Read Input Port Register Timing Diagram
Figure 9. RESET
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Characteristics subject to change without notice
READ FROM
DATA INTO
RESET
PORT
PORT
LEDx
SDA
SDA
SCL
¯¯¯¯¯¯ Timing Diagram
50%
Start Condition
S
1
t
REC
1
START
Slave Address
0
30%
DATA 1
0
W
A2
. The external Reset
2
C state machine are
A1 A0
t
R/W
ph
A
Acknowledge
From Slave
DATA 2
11
Data From Port
Power-On Reset Operation
The CAT9532 incorporates Power-On Reset (POR)
circuitry which protects the internal logic against
powering up in the wrong state. The device is in a
reset state for V
threshold level (V
level, the reset state is released and the CAT9532
internal state machine and registers are initialized to
their default state.
DATA 1
DATA 3
50%
t
ps
A
ACK OR READ CYCLE
Acknowledge
From Master
t
W
t
t
POR
RESET
RESET
CC
50%
). When V
less than the internal POR

Data From Port
50%
DATA 4
DATA 4
LED OFF
CC
No
exceeds the V
Acknowledge
From Master
Doc. No. MD-9001 Rev. E
CAT9532
NA

Stop
Condition
P

POR