PCA9685BS NXP [NXP Semiconductors], PCA9685BS Datasheet - Page 7

• Manufacturer Part Number: PCA9685BS
• Description: 16-channel, 12-bit PWM Fm+ I2C-bus LED controller
• Manufacturer: NXP [NXP Semiconductors]

NXP Semiconductors
PCA9685_2
Product data sheet
7.1.2 LED All Call I
7.1.3 LED Sub Call I
The last bit of the address byte defines the operation to be performed. When set to logic 1
a read is selected, while a logic 0 selects a write operation.
See
Remark: The default LED All Call I
as a regular I
PCA9685s on the I
See
Remark: The default LED Sub Call I
slave addresses as long as they are disabled.
Fig 4.
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PCA9564 (0000 000) or PCA9665 (1110 000) slave address which is active on
start-up
‘reserved for future use’ I
slave devices that use the 10-bit addressing scheme (1111 0XX)
slave devices that are designed to respond to the General Call address (0000 000)
which is used as the software reset address
High-speed mode (Hs-mode) master code (0000 1XX)
Default power-up value (ALLCALLADR register): E0h or 1110 000X
Programmable through I
At power-up, LED All Call I
E0h (R/W = 0) or E1h (R/W = 1) is sent by the master.
3 different I
Default power-up values:
– SUBADR1 register: E2h or 1110 001X
– SUBADR2 register: E4h or 1110 010X
– SUBADR3 register: E8h or 1110 100X
Programmable through I
At power-up, Sub Call I
ACK when E2h (R/W = 0) or E3h (R/W = 1), E4h (R/W = 0) or E5h (R/W = 1), or
E8h (R/W = 0) or E9h (R/W = 1) is sent by the master.
Section 7.3.7 “ALLCALLADR, LED All Call I
Section 7.3.6 “SUBADR1 to SUBADR3, I
Slave address
2
C-bus slave address since this address is enabled at power-up. All the
2
2
C-bus addresses can be used
C-bus address
2
C-bus addresses
2
C-bus will acknowledge the address if sent by the I
Rev. 02 — 16 July 2009
2
C-bus addresses are disabled. PCA9685 does not send an
2
2
2
C-bus (volatile programming)
C-bus (volatile programming)
fixed
C-bus addresses (0000 011, 1111 1XX)
2
1
C-bus address is enabled. PCA9685 sends an ACK when
16-channel, 12-bit PWM Fm+ I
A5
2
C-bus address (E0h or 1110 000X) must not be used
2
hardware selectable
C-bus addresses may be used as regular I
slave address
A4
A3
A2
2
C-bus subaddress 1 to 3”
2
C-bus address”
A1
002aad168
A0
R/W
for more detail.
2
C-bus LED controller
PCA9685
2
© NXP B.V. 2009. All rights reserved.
C-bus master.
for more detail.
2
C-bus
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