R5F21133DFP RENESAS [Renesas Technology Corp], R5F21133DFP Datasheet - Page 109

• Manufacturer Part Number: R5F21133DFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY/R8C/Tiny SERIES
• Manufacturer: RENESAS [Renesas Technology Corp]

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Table 12.12 Programmable Wait One-shot Generation Mode Specifications
NOTES:
1. The TZS bit in the TYZMR register must be set to "1" (start counting).
2. The TZS bit must be set to "1" (start counting), the INT0EN bit in the INTEN register to "1" (enabling INT0 input), and
3. The set values are reflected beginning with the next one-shot pulse after writing to the TZPR register.
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Count source
Count operation
Wait time
One-shot pulse output time
Count start condition
Count stop condition
Interrupt request
generation timing
TZ
INT0 pin function
Read from timer
Write to timer
Select function
Although the trigger input during counting cannot be acknowledged, the INT0 interrupt request is generated.
the INOSTG bit in the PUM register to "1" (INT0 one-shot trigger enabled).
OUT
12.3.4 Programmable Wait One-shot Generation Mode
In this mode, upon program or external trigger input (input to the INT0 pin), the microcomputer outputs
the one-shot pulse from the TZ
Programmable Wait One-shot Generation Mode Specifications”). When a trigger occurs, from this
point, the timer starts outputting pulses only once for a given length of time equal to the set value in the
TZSC register after waiting for a given length of time equal to the set value in the TZPR register.
Figure 12.26 shows the TYZMR and PUM registers in this mode. Figure 12.27 shows an operation
example in this mode.
Jan 27, 2006
pin function
Item
page 98 of 205
I n half cycles of count source, after count value at counting TZSC register is set "00
f
• Downcounts set value in Timer Z primary
• When a counting of TZPR register underflows, the timer reloads the contents of TZSC
• When a counting of TZSC register underflows, the timer reloads the contents of TZPR
• When a count stops, the timer reloads the contents of the reload register before it stops.
(n+1)(m+1)/fi
(n+1)(p+1)/fi
• Set TZOS bit in TYZOC register to “1” (start one-shot)
• Input active trigger to INT0 pin
• When reloading is completed after Timer Z underflows during secondary period
• When TZS bit in TYZMR register is set to “0” (stop counting)
• When TZOS bit in TYZOC register is set to “0” (stop one-shot)
Pulse output
Use timer mode when using this pin as a programmable I/O port.
Programmable I/O port, INT0 interrupt input or external trigger input
• When the INOSTG bit in the PUM register is set to “0” (INT0 one-shot trigger disabled)
• When the INOSTG bit in the PUM register is set to “1” (INT0 one-shot trigger enabled)
Count value can be read out by reading TZPR register.
Same applies to PREZ register.
Value written to TZPR register and PREZ register are written to reload register only
Same applies to TZSC register.
• Output level latch select function
• INT0 pin one-shot trigger control function and polarity select function
1
(at the same time as the TZout output change) [Timer Z interrupt]
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programmable I/O port or INT0 interrupt input
external trigger (INT0 interrupt input)
register before continuing counting.
register before completing counting and the TZOS bit is “0”.
Output level for one-shot pulse waveform is selected by TZOPL bit.
Trigger input from INT0 pin can be set to active or inactive by INOSTG bit. Also, an
active trigger's polarity can be selected by INOSEG bit.
, f
2
, f
8
, Timer Y underflow
OUT
_____
_______
pin after waiting for a given length of time (see “Table 12.12
n: set value in PREZ register, m: set value in TZPR register
n : set value in PREZ, p: set value in TZSC register
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(2)
Specification
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(1)
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12.3 Timer (Timer Z)
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(3)
16
.
"