M30201 datasheet(73/415 Pages) RENESAS

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Mitsubishi microcomputers

M30201 Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Timer B

Symbol

Address

When reset

CPSRF

038116

0XXXXXXX2

Clock prescaler reset flag

Bit name

Function

Bit symbol

b4 b3

Clock prescaler reset flag

0 : No effect

1 : Prescaler is reset

(When read, the value is “0”)

CPSR

Nothing is assigned.

In an attempt to write to these bits, write “0”. The value, if read, turns

out to be indeterminate.

Symbol

Address

When reset

TB0

039116, 039016

Indeterminate

TB1

039316, 039216

Indeterminate

b0 b7

(b15)

(b8)

Timer Bi register (Note)

• Pulse period / pulse width measurement mode

Measures a pulse period or width

• Timer mode

000016 to FFFF16

Counts the timer's period

Function

Values that can be set

• Event counter mode

000016 to FFFF16

Counts external pulses input or a timer overflow

Note1: Read and write data in 16-bit units.

Symbol

Address

When reset

TABSR

038016

000X00002

Count start flag

Bit name

Function

Bit symbol

b7 b6

b1 b0

Clock devided count start flag

Timer B1 count start flag

Timer B0 count start flag

Timer X2 count start flag

Timer X1 count start flag

Timer X0 count start flag

Timer A0 count start flag

0 : Stops counting

1 : Starts counting

CDCS

TB1S

TB0S

Nothing is assigned.

In an attempt to write to this bit, write “0”. The value, if read, turns out

to be indeterminate.

TX2S

TX1S

TX0S

TA0S

0 : Stops counting

1 : Starts counting

Figure 1.50. Timer B-related registers (2)

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