M37225M6_15 datasheet(27/128 Pages) RENESAS

Part #	M37225M6

Description	SNGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER

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Manufacturer	RENESAS [Renesas Technology Corp]

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27 / 128 page

M37225M6/M8/MA/MC-XXXSP, M37225ECSP

Rev.1.00

Nov 01, 2000

page 25 of 124

REJ03B0136-0100Z

Fig. 8.4.2 Timer Mode Register 2

b7 b6 b5 b4 b3 b2 b1 b0

Timer mode register 2 (TM2) [Address 00F516]

B

After reset RW

Timer Mode Register 2

0

Name

Functions

Timer 3 count source

selection bit (TM20)

0

RW

1

Timer 4 internal

interrupt count source

selection bit (TM21)

0

RW

2

3

Timer 3 count stop bit

(TM22)

0: Count start

1: Count stop

Timer 4 count stop bit

(TM23)

0: Count start

1: Count stop

0

4

Timer 4 count source

selection bit (TM24)

0: Internal clock source

1: f(XIN)/2

0

5

Timer 3 external count

source selection bit (TM25)

0: TIM3 pin input

1: HSYNC pin input

0

RW

0 : f(XIN)/16

1 : External clock source

0 : Timer 3 overflow signal

1 : f(XIN)/16

6, 7 Nothing is assigned. These bits are write disable bits.

When these bits are read out, the values are “0.”

0—

R

Fig. 8.4.1 Timer Mode Register 1

b7 b6 b5 b4 b3 b2 b1 b0

Timer mode register 1 (TM1) [Address 00F416]

B

After reset

W

Timer Mode Register 1

0

1

2

3

4

Name

Functions

Timer 1 count source

selection bit 1 (TM10)

0: f(XIN)/16

1: f(XIN)/4096

Timer 2 count source

selection bit 1 (TM11)

0: Interrupt clock source

1: External clock from TIM2 pin

Timer 1 count

stop bit (TM12)

0: Count start

1: Count stop

Timer 2 count stop bit

(TM13)

0: Count start

1: Count stop

Timer 2 internal count source

selection bit 2 (TM14)

R

0

W

R

W

R

W

R

W

R

W

R

0: f(XIN)/16

1: Timer 1 overflow

5

<At execution of STP

instruction>

Timers 3 and 4 auto

set disable bit (TM15)

0: Auto set enabled

1: Auto set disabled

0

W

R

6, 7 Nothing is assigned. These bits are write disable bits.

When these bits are read out, the values are “0.”

0—

R

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