HT85F2270 datasheet(132/226 Pages) HOLTEK

132 / 226 page

Rev. 1.00

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Standard 8051 8-Bit Flash MCU

HT85F2260/HT85F2270/HT85F2280

TH3 Register

SFR Address: A3h

● 16-bit

Bit

Name

D1�

D14

D1�

D11

D10

R/W

POR

Bit 7~0

TH3: TIMER3 Counter High Byte Register bit 15~bit 8

● 13-bit

Bit

Name

D1�

D11

D10

D�

R/W

POR

Bit 7~0

TH3: TIMER3 Counter High Byte Register bit 12~bit 5

TMOD Register

SFR Address: 89h

Bit

Name

GATE1

C/T1

T1�1

T1�0

GATE0

C/T0

T0�1

T0�0

R/W

POR

Bit 7

GATE1: Timer 1 Gate Control

0: Disable

1: Enable

This bit is used to enable the Timer 1 Gate function. When the GATE1 bit is set high

and Timer 1 is enabled to run using the TR1 bit and when the INT1 pin is input high,

then the Timer 1 Counter will increment one on every falling edge on the T1 input pin.

Bit 6

C/T1: Timer 1 Counter/Timer selection

0: Timer

1: Counter

Bit 5~4

T1M1, T1M0: Timer 1 mode selection

00: Mode 0 – 13-bit Timer/Counter

01: Mode 1 – 16-bit Timer/Counter

10: Mode 2 – 8-bit Auto Reload Timer/Counter

11: Mode 3 – Timer Stopped

Bit 3

GATE0: Timer 0 Gate Control

0: Disable

1: Enable

This bit is used to enable the Timer 0 Gate function. When the GATE0 bit is set high

and Timer 0 is enabled to run using the TR0 bit and when the INT0 pin is input high,

then the Timer 0 Counter will increment one on every falling edge on the T0 input pin.

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