TMP86FS49AIUG datasheet(136/296 Pages) TOSHIBA

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Page 120

11. 8-Bit TimerCounter (TC5, TC6)

11.1 Configuration

TMP86FS49AIUG

11.2 TimerCounter Control

The TimerCounter 5 is controlled by the TimerCounter 5 control register (TC5CR) and two 8-bit timer registers

(TTREG5, PWREG5).

Note 1: Do not change the timer register (TTREG5) setting while the timer is running.

Note 2: Do not change the timer register (PWREG5) setting in the operating mode except the 8-bit and 16-bit PWM modes while

the timer is running.

Note 1: fc: High-frequency clock [Hz] fs: Low-frequency clock[Hz]

Note 2: Do not change the TC5M, TC5CK and TFF5 settings while the timer is running.

Note 3: To stop the timer operation (TC5S= 1

→ 0), do not change the TC5M, TC5CK and TFF5 settings. To start the timer oper-

ation (TC5S= 0

→ 1), TC5M, TC5CK and TFF5 can be programmed.

Note 4: To use the TimerCounter in the 16-bit mode, set the operating mode by programming TC6CR<TC6M>, where TC5M must

be fixed to 011.

Note 5: To use the TimerCounter in the 16-bit mode, select the source clock by programming TC5CK. Set the timer start control

and timer F/F control by programming TC6CR<TC6S> and TC6CR<TFF6>, respectively.

Note 6: The operating clock settings are limited depending on the timer operating mode. For the detailed descriptions, see Table

11-1 and Table 11-2.

TimerCounter 5 Timer Register

TTREG5

(0016H)

R/W

6543

210

(Initial value: 1111 1111)

PWREG5

(001AH)

R/W

6543

210

(Initial value: 1111 1111)

TimerCounter 5 Control Register

TC5CR

(0029H)

6543

210

TFF5

TC5CK

TC5S

TC5M

(Initial value: 0000 0000)

TFF5

Time F/F5 control

Clear

Set

R/W

TC5CK

Operating clock selection [Hz]

NORMAL1/2, IDLE1/2 mode

SLOW1/2

SLEEP1/2

mode

R/W

DV7CK = 0

DV7CK = 1

000

fc/211

fs/23

001

fc/27

–

010

fc/25

–

011

fc/23

–

100

101

fc/2

–

110

fc (Note 8)

111

TC5 pin input

TC5S

TC5 start control

Operation stop and counter clear

Operation start

R/W

TC5M

TC5M operating mode select

000:

001:

010:

011:

1**:

8-bit timer/event counter mode

8-bit programmable divider output (PDO) mode

8-bit pulse width modulation (PWM) output mode

16-bit mode

(Each mode is selectable with TC6M.)

Reserved

R/W

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