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參數資料
| 型號： | 935285129112 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 顯示驅動器 |
| 英文描述： | LED DISPLAY DRIVER, PDSO28 |
| 封裝： | 4.40 MM, PLASTIC, MO-153, SOT361-1, TSSOP-28 |
| 文件頁數： | 53/54頁 |
| 文件大小： | 410K |
| 代理商： | 935285129112 |
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PCA9685_2
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 16 July 2009
8 of 50
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
7.1.4 Software Reset I2C-bus address
The address shown in Figure 5 is used when a reset of the PCA9685 needs to be
performed by the master. The Software Reset address (SWRST Call) must be used with
R/W = logic 0. If R/W = logic 1, the PCA9685 does not acknowledge the SWRST. See
Section 7.6 “Software reset” for more detail.
Remark: The Software Reset I2C-bus address is a reserved address and cannot be used
as a regular I2C-bus slave address or as an LED All Call or LED Sub Call address.
7.2 Control register
Following the successful acknowledgement of the slave address, LED All Call address or
LED Sub Call address, the bus master will send a byte to the PCA9685, which will be
stored in the Control register.
This register is used as a pointer to determine which register will be accessed.
Fig 5.
Software Reset address
0
002aab416
0
1
R/W
reset state = 00h
Remark: The Control register does not apply to the Software Reset I2C-bus address.
Fig 6.
Control register
002aac826
D7
D6
D5
D4
D3
D2
D1
D0
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