HT46R0664 datasheet(26/92 Pages) HOLTEK

26 / 92 page

Rev. 1.00

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HT46R0664

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

Bit 0

LXTEN: LXT Oscillator on/off control after execution of HALT instruction

0: LXT off in SLEEP Mode

1: LXT on in IDLE Mode

CTRL3 Register

Bit

Name

—

LVRF

LRF

WRF

R/W

—

R/W

POR

—

"x" �nknown

Bit 7~3

Unimplemented, read as “0”

Bit 2

LVRF: reset caused by LVR function activation

0: not active

1: active

This bit can be clear to “0”, but can not set to “1”.

Bit 1

LRF: reset caused by LVRC setting

0: not active

1: active

This bit can be clear to “0”, but can not set to “1”.

Bit 0

WRF: reset caused by WE[4:0] setting

0: not active

1: active

This bit can be clear to “0”, but can not set to “1”.

CTRL4 Register

Bit

Name

—

LXTLP

—

TB1�

TB11

TB10

R/W

—

R/W

—

R/W

POR

—

Bit 7~5,3

Undefined, read as “0”

Bit 4

LXTLP: LXT oscillator low power control function

0: LXT Oscillator quick start-up mode

1: LXT Oscillator Low Power Mode

Bit 2~0

TB12~TB10: Time Base 1 clock selection

000: fS/28

001: fS/29

010: fS/210

011: fS/211

100: fS/212

101: fS/213

110: fS/214

111: fS/215

HT46R0664 Datasheet(PDF) 26 Page - Holtek Semiconductor Inc

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