M16CSLASH29 datasheet(142/499 Pages) RENESAS

142 / 499 page

12. Timer B

page 118

Figure 12.17 TB0 to TB2 Registers, TABSR Register, CPSRF Register

Symbol

Address

After Reset

TABSR

038016

0016

Count Start Flag

Bit Name

Bit Symbol

b7 b6 b5 b4 b3 b2 b1 b0

Timer B2 count start flag

Timer B1 count start flag

Timer B0 count start flag

Timer A4 count start flag

Timer A3 count start flag

Timer A2 count start flag

Timer A1 count start flag

Timer A0 count start flag

0: Stops counting

1: Starts counting

TB2S

TB1S

TB0S

TA4S

TA3S

TA2S

TA1S

TA0S

Function

Symbol

Address

After Reset

CPSRF

038116

0XXXXXXX16

Clock Prescaler Reset flag

Bit Name

Function

Bit Symbol

b7 b6 b5 b4 b3 b2 b1 b0

Clock prescaler reset flag

CPSR

Nothing is assigned. If necessary, set to 0. When read, the

contents are undefined

(b6-b0)

Setting this bit to 1 initializes the

prescaler for the timekeeping clock.

(When read, the value of this bit is 0)

Symbol

Address

After Reset

TB0

039116, 039016

Undefined

TB1

039316, 039216

Undefined

TB2

039516, 039416

Undefined

b0 b7

(b15)

(

b8)

Timer Bi Register (i=0 to 2)(1)

Measures a pulse period or width

Function

NOTES:

1.The register must be accessed in 16 bit units.

2. The timer counts pulses from an external device or overflows or underflows of other timers.

3. When this mode is used combining delayed trigger mode 0, set the larger value than the

value in the timer B0 register to the timer B1 register.

Divide the count source by n + 1

where n = set value

Timer mode

Event counter

mode

000016 to FFFF16

Divide the count source by n + 1

where n = set value (2)

000016 to FFFF16

Pulse period

modulation mode,

Pulse width

modulation mode

Mode

Setting Rrange

A/D trigger

mode (3)

Divide the count source by n + 1 where

n = set value and cause the timer stop

000016 to FFFF16

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