PCA9952TW,118 NXP Semiconductors, PCA9952TW,118 Datasheet - Page 18

• Manufacturer Part Number: PCA9952TW,118
• Description: LED Lighting Drivers 16-ch Fm+ I2C-bus 57 mA LED driver
• Manufacturer: NXP Semiconductors

Specifications of PCA9952TW,118

• Rohs: yes
• Input Voltage: 3 V to 5.5 V
• Operating Frequency: 31.25 kHz
• Maximum Supply Current: 15 mA
• Output Current: 62 mA
• Mounting Style: SMD/SMT
• Package / Case: HTSSOP-28
• Factory Pack Quantity: 2500

NXP Semiconductors
PCA9952_PCA9955
Product data sheet
7.3.10 ALLCALLADR, LED All Call I
7.3.12 RESERVED2, RESERVED3
7.3.13 PWMALL — brightness control for all LEDn outputs
7.3.11 RESERVED1
Default power-up values are ECh, ECh, ECh. At power-up, SUBADR1 is enabled while
SUBADR2 and SUBADR3 are disabled. The power-up default bit subaddress of ECh
indicates that this device is a 16-channel LED driver.
All three subaddresses are programmable. Once subaddresses have been programmed
to their right values, SUBx bits need to be set to logic 1 in order to have the device
acknowledging these addresses (MODE1 register) (0). When SUBx is set to logic 1, the
corresponding I
sequence.
Table 16.
Legend: * default value.
The LED All Call I
programmed at the same time (ALLCALL bit in register MODE1 must be equal to logic 1
(power-up default state)). This address is programmable through the I
used during either an I
programmed as a Sub Call.
Only the 7 MSBs representing the All Call I
ALLCALLADR register is a read-only bit (0).
If ALLCALL bit = 0, the device does not acknowledge the address programmed in register
ALLCALLADR.
This register is reserved.
These registers are reserved.
When programmed, the value in this register will be used for PWM duty cycle for all the
LEDn outputs and will be reflected in PWM0 through PWM15 registers.
Write to any of the PWM0 to PWM15 registers will overwrite the value in corresponding
PWMn register programmed by PWMALL.
Table 17.
Legend: * default value.
Address Register
Address
3Eh
42h
ALLCALLADR
ALLCALLADR - LED All Call I
description
PWMALL - brightness control for all LEDn outputs register (address 42h)
bit description
Register
PWMALL
2
All information provided in this document is subject to legal disclaimers.
C-bus subaddress can be used during either an I
2
C-bus address allows all the PCA9952/55s on the bus to be
2
Bit
7:0
C-bus read or write sequence. The register address can also be
Rev. 6 — 22 April 2013
16-channel Fm+ I
Bit
7:1
0
Access
write only
Symbol
AC[7:1]
AC[0]
2
C-bus address
2
C-bus address register (address 3Eh) bit
Value
0000 0000*
2
Access Value
R/W
R only
C-bus address are valid. The LSB in
2
C-bus 57 mA constant current LED driver
PCA9952; PCA9955
1110 000*
0*
Description
duty cycle for all LEDn outputs
Description
ALLCALL I
address register
reserved
2
C-bus read or write
2
C-bus and can be
© NXP B.V. 2013. All rights reserved.
2
C-bus
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