HT46R0664 datasheet(25/92 Pages) HOLTEK

25 / 92 page

Rev. 1.00

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HT46R0664

Enhanced A/D+LCD 8-Bit OTP MCU

CTRL1 Register

Bit

Name

T0S1

T0S0

TB01

TB00

—

R/W

—

POR

—

Bit 7~6

T0S1, T0S0: Prescaler/TMR0 clock source

00: fTP=fSYS

Prescaler clock source is fSYS

TMR0 clock source is come from the output clock of Prescaler

01: fTP=LXT

Prescaler clock source is LXT

TMR0 clock source is come from the output clock of Prescaler

10: fTP=PFD0

Prescaler clock source is PFD0

TMR0 clock source is come from fSYS

11: undefined

Note: If PWM0C or PWM1C is enabled, the clock source of Prescaler is only selected

from fSYS or PFD0 by assigning T0S1.

Bit 5~4

TB01, TB00: Time base 0 period selection

00: fS/212

01: fS/213

10: fS/214

11: fS/215

Bit 3~0

Unimplemented, read as “0”

CTRL2 Register

Bit

Name

LCDSEL� LCDSEL1 LCDSEL0 BZSEL� BZSEL1 BZSEL0

BUZC

LXTEN

R/W

POR

Bit 7~5

LCDSEL2~LCDSEL0: LCD driver clock selection

000: fS/22

001: fS/23

010: fS/24

011: fS/25

100: fS/26

101: fS/27

110: fS/28

111: reserved

Bit 4~2

BZSEL2~BZSEL0: BZ frequency selection

000: fS/22

001: fS/23

010: fS/24

011: fS/25

100: fS/26

101: fS/27

110: fS/28

111: fS/29

Bit 1

BUZC: I/O, BUZ selection

0: I/O

1: BUZ

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