9532 데이터 시트보기 (PDF) - NXP Semiconductors.
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9532 Datasheet PDF : 29 Pages
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NXP Semiconductors
PCA9532
16-bit I2C-bus LED dimmer
6.2.1 Control register definition
Table 3. Register summary
B3 B2 B1 B0 Symbol
0
0
0
0
INPUT0
0
0
0
1
INPUT1
0
0
1
0
PSC0
0
0
1
1
PWM0
0
1
0
0
PSC1
0
1
0
1
PWM1
0
1
1
0
LS0
0
1
1
1
LS1
1
0
0
0
LS2
1
0
0
1
LS3
Access
read only
read only
read/write
read/write
read/write
read/write
read/write
read/write
read/write
read/write
Description
input register 0
input register 1
frequency prescaler 0
PWM register 0
frequency prescaler 1
PWM register 1
LED0 to LED3 selector
LED4 to LED7 selector
LED8 to LED11 selector
LED12 to LED15 selector
6.3 Register descriptions
6.3.1 INPUT0 - Input register 0
The INPUT0 register reflects the state of the device pins (inputs 0 to 7). Writes to this
register will be acknowledged but will have no effect.
Table 4.
Bit
Symbol
Default
INPUT0 - Input register 0 description
7
6
5
4
LED7 LED6 LED5 LED4
X
X
X
X
3
LED3
X
2
LED2
X
1
LED1
X
0
LED0
X
Remark: The default value ‘X’ is determined by the externally applied logic level (normally
logic 1) when used for directly driving LED with pull-up to VDD.
6.3.2 INPUT1 - Input register 1
The INPUT1 register reflects the state of the device pins (inputs 8 to 15). Writes to this
register will be acknowledged but will have no effect.
Table 5.
Bit
Symbol
Default
INPUT1 - Input register 1 description
7
6
5
4
LED15 LED14 LED13 LED12
X
X
X
X
3
LED11
X
2
LED10
X
1
LED9
X
0
LED8
X
Remark: The default value ‘X’ is determined by the externally applied logic level (normally
logic 1) when used for directly driving LED with pull-up to VDD.
PCA9532_4
Product data sheet
Rev. 04 — 17 March 2009
© NXP B.V. 2009. All rights reserved.
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