M16CSLASH1N datasheet(96/238 Pages) RENESAS

96 / 238 page

Rev.1.00

Oct 20, 2004

page 84 of 222

M16C/1N Group

12. Timers

REJ09B0007-0100Z

Note 1: When setting this bit to "1", the prescaler Y register must be set to "0016".

Note 2: When setting this bit to "1", the prescaler Z register must be set to "0016".

Note 3: When setting this bit to "1", this bit must be set to "1" after setting the INT0 input enable bit (bit 0 at address 009616), the

INT0 input polarity select bit (bit 1 at address 009616), the INT0 input filter select bits (bits 0 and 1 at address 001E16)

and the INT0 pin one-shot trigger polarity select bit.

Note 4: This bit is valid only when the INT0 input polarity select bit (bit 1 at address 009616) is "0" (one-edge).

b5 b4

Timer Y, Z waveform output control register

TYPUM0

Timer Y primary

waveform extension

control bit

0 : No waveform extension

1 : Waveform extension (Note 1)

TYPUM1

Timer Y secondary

waveform extension

control bit

0 : No waveform extension

1 : Waveform extension (Note 1)

TZPUM0

Timer Z primary

waveform extension

control bit

0 : No waveform extension

1 : Waveform extension (Note 2)

TZPUM1

Timer Z secondary

waveform extension

control bit

0 : No waveform extension

1 : Waveform extension (Note 2)

TYOPL

Timer Y output level

latch

Function varies depending on the operation mode

TZOPL

Timer Z output level

latch

Function varies depending on the operation mode

INOSTG

INT0 pin one-shot

trigger control bit

(Timer Z)

0 : INT0 pin one-shot trigger invalid

1 : INT0 pin one-shot trigger valid (Note 3)

INOSEG

INT0 pin one-shot

trigger polarity select bit

(Note 4)

(Timer Z)

0 : Edge trigger at falling edge

1 : Edge trigger at rising edge

Symbol

PUM

Address

008416

When reset

0016

Function

Bit name

Bit symbol

Note 1: Avoid switching a count source, while a counter is in progress. Timer counter should be stopped before switching a

counter source.

Note 2: The waveform extend function cannot be used when selecting f1 for count source.

Note 3: When attempting to select on-chip oscillator output, set the on-chip oscillation enable bit (CM14) of the system clock

control register (address 000716) for oscillation enabled.

Note 4: The waveform extend function cannot be used when selecting Timer Y underflow and f1 for count source.

Both the Timer Y primary underflow and the Timer Y secondary underflow are counted when selecting the Timer Y

underflow for count source.

b5 b4

Timer count source setting register

TXCK0

TXCK1

Timer X count source

select bit (Note 1)

Symbol

TCSS

Address

008E16

When reset

0016

Function

Bit name

Bit symbol

0 0 : f1

0 1 : f8

1 0 : f32

1 1 : fC32

b1 b0

TYCK0

TYCK1

Timer Y count source

select bit (Note 1, 2)

0 0 : f1

0 1 : f8

1 0 : On-chip oscillator output (Note 3)

1 1 : fC32

b3 b2

TZCK0

TZCK1

Timer Z count source

select bit (Note 1, 4)

0 0 : f1

0 1 : f8

1 0 : Timer Y underflow

1 1 : fC32

b5 b4

T1CK0

T1CK1

Timer 1 count source

select bit

0 0 : f1

0 1 : f8

1 0 : f32

1 1 : fC32

b7 b6

Figure 12.16 Timer Y-related registers (3)

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