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參數(shù)資料
| 型號： | 935289802118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | LED DISPLAY DRIVER, PDSO28 |
| 封裝： | 4.40 MM, PLASTIC, MO-153, SOT361-1, TSSOP-28 |
| 文件頁數(shù)： | 16/54頁 |
| 文件大?。?/td> | 410K |
| 代理商： | 935289802118 |
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PCA9685_2
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 16 July 2009
23 of 50
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
The LEDn_ON_H output control bit 4, when set to logic 1, causes the output to be always
ON. The turning ON of the LED is delayed by the amount in the LEDn_ON registers.
LEDn_OFF[11:0] are ignored. When this bit = 0, then the LEDn_ON and LEDn_OFF
registers are used according to their normal denition.
The LEDn_OFF_H output control bit 4, when set to logic 1, causes the output to be
always OFF. In this case the values in the LEDn_ON registers are ignored.
Remark: When all LED outputs are congured as ‘a(chǎn)lways OFF’, the prescale counter and
all associated PWM cycle timing logic are disabled. If LEDn_ON_H[4] and
LEDn_OFF_H[4] are set at the same time, the LEDn_OFF_H[4] function takes
precedence.
3Ch
LED13_OFF_L
7:0
LED13_OFF_L[7:0]
R/W
0000 0000*
LEDn_OFF count for LED13, 8 LSBs
3Dh
LED13_OFF_H
7:5
reserved
R
000*
non-writable
4
LED13_OFF_H[4]
R/W
1*
LED13 full OFF
3:0
LED13_OFF_H[3:0]
R/W
0000*
LEDn_OFF count for LED13, 4 MSBs
3Eh
LED14_ON_L
7:0
LED14_ON_L[7:0]
R/W
0000 0000*
LEDn_ON count for LED14, 8 LSBs
3Fh
LED14_ON_H
7:5
reserved
R
000*
non-writable
4
LED14_ON_H[4]
R/W
0*
LED14 full ON
3:0
LED14_ON_H[3:0]
R/W
0000*
LEDn_ON count for LED14, 4 MSBs
40h
LED14_OFF_L
7:0
LED14_OFF_L[7:0]
R/W
0000 0000*
LEDn_OFF count for LED14, 8 LSBs
41h
LED14_OFF_H
7:5
reserved
R
000*
non-writable
4
LED14_OFF_H[4]
R/W
1*
LED14 full OFF
3:0
LED14_OFF_H[3:0]
R/W
0000*
LEDn_OFF count for LED14, 4 MSBs
42h
LED15_ON_L
7:0
LED15_ON_L[7:0]
R/W
0000 0000*
LEDn_ON count for LED15, 8 LSBs
43h
LED15_ON_H
7:5
reserved
R
000*
non-writable
4
LED15_ON_H[4]
R/W
0*
LED15 full ON
3:0
LED15_ON_H[3:0]
R/W
0000*
LEDn_ON count for LED15, 4 MSBs
44h
LED15_OFF_L
7:0
LED15_OFF_L[7:0]
R/W
0000 0000*
LEDn_OFF count for LED15, 8 LSBs
45h
LED15_OFF_H
7:5
reserved
R
000*
non-writable
4
LED15_OFF_H[4]
R/W
1*
LED15 full OFF
3:0
LED15_OFF_H[3:0]
R/W
0000*
LEDn_OFF count for LED15, 4 MSBs
Table 6.
LED_ON, LED_OFF control registers (address 06h to 45h) bit description …continued
Legend: * default value.
Address
Register
Bit
Symbol
Access
Value
Description
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