R8C datasheet(76/199 Pages) RENESAS

76 / 199 page

R8C/10 Group

Rev.1.20 Jan 27, 2006

page 66 of 180

REJ09B0019-0120

Timer Y, Z output control register(3)

Symbol

Address

After reset

TYZOC

008A16

0016

Bit name

Function

Bit symbol

b7 b6 b5 b4 b3 b2 b1 b0

TZOCNT

TYOCNT

TZOS

Nothing is assigned.

When write, set to "0". When read, its content is "0".

Timer Z one-shot

start bit(1)

Timer Y programmable

waveform generation

output switching bit(2)

0 : Outputs programmable waveform

1 : Outputs the value of P32 port register

0 : Outputs programmable waveform

1 : Outputs the value of P31 port register

0 : Stops one-shot

1 : Starts one-shot

Timer Z programmable

waveform generation

output switching bit(2)

NOTES:

1. This bit is set to "0" when the output of one-shot waveform is completed. The TZOS bit should be set to "0" if the

one-shot waveform output is terminated by setting the TZS bit in the TYZMR to "0" during the waveform output.

2. This bit is enabled only when operating in programmable waveform generation mode.

3. If executing an instruction which changes this register when the TZOS bit is “1” (during the count), the TZOS is

automatically set to “0” when the count completes while the instruction is executed. If this causes some problems,

execute an instruction which changes this register when the TZOS bit is “0” (one shot stop).

(b7-b3)

Figure 12.13 PREY Register, TYSC Register, TYPR Register, and TYZOC Register

Timer Y primary register

Timer Y secondary register

SymbolAddressAfter reset

TYSC008216

FF16

NOTES:

1. The values of TYPR register and TYSC register are reloaded to the counter alternately for counting.

2. The count value can be read out by reading the TYPR register even when the secondary period is being

counted.

Symbol

Address

After reset

PREY

008116

FF16

Internal count source or CNTR1

input is counted

Function

Setting range

Prescaler Y register

0016 to FF16

Internal count source is counted

0016 to FF16

Timer mode

Programmable

waveform generation

mode

Mode

Symbol

Address

After reset

TYPR

008316

FF16

Disabled

Function

Setting range

Underflow of Prescaler Y is

counted(1)

0016 to FF16

Timer mode

Programmable

waveform generation

mode

Mode

WO(2)

Underflow of Prescaler Y is

counted

Function

Setting range

Underflow of Prescaler Y is

counted(1)

0016 to FF16

Timer mode

Programmable

waveform generation

mode

Mode

0016 to FF16

NOTES:

1. The values of TYPR register and TYSC register are reloaded to the counter alternately for counting.

12.2 Timer (Timer Y)

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