pca9624 NXP Semiconductors, pca9624 Datasheet - Page 12

• Manufacturer Part Number: pca9624
• Description: 8-bit Fm+ I2c-bus 100 Ma 40 V Led Driver
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCA9624_1
Product data sheet
7.3.5 GRPFREQ, group frequency
7.3.6 LEDOUT0 and LEDOUT1, LED driver output state
Table 9.
Legend: * default value.
GRPFREQ is used to program the global blinking period when DMBLNK bit (MODE2
register) is equal to 1. Value in this register is a ‘Don’t care’ when DMBLNK = 0.
Applicable to LED outputs programmed with LDRx = 11 (LEDOUT0 to LEDOUT3
registers).
Blinking period is controlled through 256 linear steps from 00h (41 ms, frequency 24 Hz)
to FFh (10.73 s).
Table 10.
Legend: * default value.
LDRx = 00 — LED driver x is off (default power-up state).
LDRx = 01 — LED driver x is fully on (individual brightness and group dimming/blinking
not controlled).
LDRx = 10 — LED driver x individual brightness can be controlled through its PWMx
register.
LDRx = 11 — LED driver x individual brightness and group dimming/blinking can be
controlled through its PWMx register and the GRPPWM registers.
global blinking period
Address
0Bh
Address
0Ch
0Dh
GRPFREQ - Group Frequency register (address 0Bh) bit description
Register
GRPFREQ
LEDOUT0 to LEDOUT1 - LED driver output state register (address 0Ch to 0Dh)
bit description
Register
LEDOUT0
LEDOUT1
Bit
7:0
Bit
7:6
5:4
3:2
1:0
7:6
5:4
3:2
1:0
Rev. 01 — 3 June 2009
=
GFRQ 7:0
--------------------------------------- - s
Symbol
GFRQ[7:0]
Symbol
LDR3
LDR2
LDR1
LDR0
LDR7
LDR6
LDR5
LDR4
24
+
1
Access Value
R/W
Access Value
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
8-bit Fm+ I
0000 0000* GRPFREQ register
00*
00*
00*
00*
00*
00*
00*
00*
2
C-bus 100 mA 40 V LED driver
Description
Description
LED3 output state control
LED2 output state control
LED1 output state control
LED0 output state control
LED7 output state control
LED6 output state control
LED5 output state control
LED4 output state control
PCA9624
© NXP B.V. 2009. All rights reserved.
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