HT46R0664 datasheet(74/92 Pages) HOLTEK

74 / 92 page

Rev. 1.00

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Rev. 1.00

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HT46R0664

Enhanced A/D+LCD Type 8-Bit OTP MCU

CTRL2 register

Bit

Name

LCDSEL� LCDSEL1 LCDSEL0 BZSEL� BZSEL1 BZSEL0

BUZC

LXTEN

R/W

POR

Bit 7~5

LCDSEL2~LCDSEL0: LCD Driver clock

000: fs/22

001: fs/23

010: fs/24

011: fs/25

100: fs/26

101: fs/27

110: fs/28

111: reserved

Bit 4~0

Described elsewhere

LCDC register

Bit

Name

TYPE

—

BI�S

RSEL1

RSEL0

LCDEN

R/W

—

R/W

POR

—

Bit 7

TYPE: LCD Type A or Type B

0: Type A

1: Type B

Bit 6~4

Unused bit, read as “0”

Bit 3

BIAS: Define LCD Bias

0: 1/3 Bias; 1/4 Duty

1: 1/4 Bias; 1/8 Duty

Bit 2~1

RSEL1, RSEL0: Select resistor for R type LCD bias current

00: 600kΩ

01: 300kΩ

10: 100kΩ

11: 30kΩ

Bit 0

LCDEN: LCD enable/disable control

0: disable

1: enable

LCDO register

Bit

Name

—

LCDO3

LCDO�

LCDO1

LCDO0

R/W

—

R/W

POR

—

Bit 7~4

Unused bit, read as “0”

Bit 3

LCDO3: LCD COM or I/O function control bit(COM0~COM3)

0: I/O

1: LCD COM

Bit 2

LCDO2: LCD SEG or I/O function control bit(SEG16~SEG22)

0: I/O or A/D function

1: LCD SEG or COM

HT46R0664 Datasheet(PDF) 74 Page - Holtek Semiconductor Inc

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