PCA9626B datasheet(13/47 Pages) NXP

13 / 47 page

PCA9626_2

Product data sheet

Rev. 02 — 31 August 2009

13 of 47

NXP Semiconductors

PCA9626

24-bit Fm+ I2C-bus 100 mA 40 V LED driver

7.3.3 PWM0 to PWM23, individual brightness control

A 97 kHz ﬁxed frequency signal is used for each output. Duty cycle is controlled through

256 linear steps from 00h (0 % duty cycle = LED output off) to FFh

(99.6 % duty cycle = LED output at maximum brightness). Applicable to LED outputs

programmed with LDRx = 10 or 11 (LEDOUT0 to LEDOUT5 registers).

(1)

Table 7.

PWM0 to PWM23 - PWM registers 0 to 23 (address 02h to 19h) bit description

Legend: * default value.

Address

Bit

Symbol

Access

Value

Description

02h

PWM0

7:0

IDC0[7:0]

R/W

0000 0000* PWM0 Individual Duty Cycle

03h

PWM1

7:0

IDC1[7:0]

R/W

0000 0000* PWM1 Individual Duty Cycle

04h

PWM2

7:0

IDC2[7:0]

R/W

0000 0000* PWM2 Individual Duty Cycle

05h

PWM3

7:0

IDC3[7:0]

R/W

0000 0000* PWM3 Individual Duty Cycle

06h

PWM4

7:0

IDC4[7:0]

R/W

0000 0000* PWM4 Individual Duty Cycle

07h

PWM5

7:0

IDC5[7:0]

R/W

0000 0000* PWM5 Individual Duty Cycle

08h

PWM6

7:0

IDC6[7:0]

R/W

0000 0000* PWM6 Individual Duty Cycle

09h

PWM7

7:0

IDC7[7:0]

R/W

0000 0000* PWM7 Individual Duty Cycle

0Ah

PWM8

7:0

IDC8[7:0]

R/W

0000 0000* PWM8 Individual Duty Cycle

0Bh

PWM9

7:0

IDC9[7:0]

R/W

0000 0000* PWM9 Individual Duty Cycle

0Ch

PWM10

7:0

IDC10[7:0]

R/W

0000 0000* PWM10 Individual Duty Cycle

0Dh

PWM11

7:0

IDC11[7:0]

R/W

0000 0000* PWM11 Individual Duty Cycle

0Eh

PWM12

7:0

IDC12[7:0]

R/W

0000 0000* PWM12 Individual Duty Cycle

0Fh

PWM13

7:0

IDC13[7:0]

R/W

0000 0000* PWM13 Individual Duty Cycle

10h

PWM14

7:0

IDC14[7:0]

R/W

0000 0000* PWM14 Individual Duty Cycle

11h

PWM15

7:0

IDC15[7:0]

R/W

0000 0000* PWM15 Individual Duty Cycle

12h

PWM16

7:0

IDC16[7:0]

R/W

0000 0000* PWM16 Individual Duty Cycle

13h

PWM17

7:0

IDC17[7:0]

R/W

0000 0000* PWM17 Individual Duty Cycle

14h

PWM18

7:0

IDC18[7:0]

R/W

0000 0000* PWM18 Individual Duty Cycle

15h

PWM19

7:0

IDC19[7:0]

R/W

0000 0000* PWM19 Individual Duty Cycle

16h

PWM20

7:0

IDC20[7:0]

R/W

0000 0000* PWM20 Individual Duty Cycle

17h

PWM21

7:0

IDC21[7:0]

R/W

0000 0000* PWM21 Individual Duty Cycle

18h

PWM22

7:0

IDC22[7:0]

R/W

0000 0000* PWM22 Individual Duty Cycle

19h

PWM23

7:0

IDC23[7:0]

R/W

0000 0000* PWM23 Individual Duty Cycle

duty cycle

IDCx 7:0

[]

256

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