CC1010-RTR1 datasheet(52/152 Pages) TI

52 / 152 page

CC1010

SWRS047

Page 52 of 152

16.2 Timer 0 / Timer 1

CC1010 contains two standard 8051

timers/counters (Timer 0 and Timer 1)

which can operate as either a timer with a

clock rate based on the system clock (as

defined by the current clock mode), or as

an event counter clocked by the T0 (P3.4

for Timer 0) or T1 (P3.5 for Timer 1)

inputs.

Each Timer / Counter has a 16-bit register

which is readable and writeable through

TL0 and TH0 for Timer / Counter 0 and

TL1 and TH1 for Timer / Counter 1. These

registers are described below.

TL0 (0x8A) - Timer / Counter 0 Low byte counter value

Bit

Name

R/W

Reset value

Description

7:0

TL0(7:0)

R/W

0x00

Timer / Counter 0, low byte counter value

TL1 (0x8B) - Timer / Counter 1 Low byte counter value

Bit

Name

R/W

Reset value

Description

7:0

TL1(7:0)

R/W

0x00

Timer / Counter 1, low byte counter value

TH0 (0x8C) - Timer / Counter 0 High byte counter value

Bit

Name

R/W

Reset value

Description

7:0

TH0(7:0)

R/W

0x00

Timer / Counter 0, high byte counter value

TH1 (0x8D) - Timer / Counter 1 High byte counter value

Bit

Name

R/W

Reset value

Description

7:0

TH1(7:0)

R/W

0x00

Timer / Counter 1, high byte counter value

16.2.1

Timer / Counter 0 and 1 Modes

Timer / Counter 0 and 1 can individually

be programmed to operate in one out of

four different modes, controllable through

the registers TMOD and TCON. They are as

follows:

•

13-bit timer / counter (Mode 0)

•

16-bit timer / counter (Mode 1)

•

8-bit timer / counter with auto-reload

(Mode 2)

•

Two 8-bit timers / counters (Mode 3,

Timer 0 only)

See the register descriptions for TMOD and

TCON on the following pages.

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