STMPE821 datasheet(44/55 Pages) STMICROELECTRONICS

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Basic PWM controller

STMPE821

44/55

PWM_OFF_OUTPUT

PWM group control register

Address:

0xA0

Type:

R/W

Reset:

0x00

Description:

PWM group control register.

RAMP_RATE

Ramp rate register

Address:

0xB2

Type:

R/W

Reset:

0x00

Description:

Ramp rate register.

765

432

OUT3

OUT2

OUT1

OUT0

[7:4] RESERVED

[3:0] OUT3:0:

Default is '0'

'1' - PWM channel outputs '1' when disabled

'0' - PWM channel outputs '0' when disabled

765

432

RESERVED

RAMP_DOWN

RAMP_UP

[7:6] RESERVED

[5:3] RAMP_DOWN [2:0]:

'000' = 1/4 of time unit per brightness level change

'001' = 1/8 of time unit per brightness level change

'010' = 1/16 of time unit per brightness level change

'011' = 1/32 of time unit per brightness level change

'100' = 1/64 of time unit per brightness level change

'101' = 1/128 of time unit per brightness level change

'110' = reserved

'111' = reserved

[2:0] RAMP_UP [2:0]:

'000' = 1/4 of time unit per brightness level change

'001' = 1/8 of time unit per brightness level change

'010' = 1/16 of time unit per brightness level change

'011' = 1/32 of time unit per brightness level change

'100' = 1/64 of time unit per brightness level change

'101' = 1/128 of time unit per brightness level change

'110' = reserved

'111' = reserved

STMPE821 数据表(PDF) 44 Page - STMicroelectronics

STMPE821 数据表(HTML) 44 Page - STMicroelectronics

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