m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 170

• Manufacturer Part Number: m30833fjgp
• Description: Renesas 16/32-bit Single-chip Microcomputer M16c Family / M32c/80 Series
• Manufacturer: Renesas Electronics Corporation.

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Table 14.6 Specifications in One-shot Timer Mode
NOTES:
2
0
Count Source
Counting Operation
Divide Ratio
Counter Start Condition
Counter Stop Condition
Interrupt Request Generation Timing The timer counter reaches "0000
TAi
TAi
Read from Timer
Write to Timer
14.1.3 One-shot Timer Mode
1
9
C
3 .
B
In one-shot timer mode, the timer operates only once for each trigger (see Table 14.6). Once a trigger
occurs, the timer starts and continues operating for a desired period. Figure 14.12 shows the TAiMR
register (i=0 to 4) in one-shot timer mode.
8 /
IN
OUT
0
1
1. The CNT3 to CNT0 bits in the TCSPR register select no division (n=0) or divide-by-2n (n=1 to 15).
3
0
Pin Function
3
J
G
4
a
Pin Function
0 -
n
o r
3 .
1
Item
u
, 1
3
p
1
2
(
M
0
0
3
6
2
C
Page 147
8 /
, 3
M
3
The TAiS bit in the TABSR register is set to "1" (starts counting) and following triggers
f
The timer decrements a counter value
• When the timer counter reaches "0000
• If a trigger occurs while counting, content of the reload register is reloaded into the
1/n
occur:
• After the timer counter has reached "0000
• When the TAiS bit is set to "0" (timer stopped)
Programmable I/O port or trigger input
Programmable I/O port or pulse output
The value in the TAi register is indeterminate when read
• When the timer counter stops,
• While counting,
2
1
(It is transferred to the counter at the next reload timing)
count register and counting resumes.
, f
• External trigger input
• The timer overflow or underflow signal
• The TAiOS bit in the ONSF register is set to "1" (timer started)
the value written to the TAi register is also written to both reload register and counter
the value written to the TAi register is written to the reload register
C
f o
8
8 /
, f
4
3
8
2n (1)
n : setting value of the TAi register (i=0 to 4) 000016 to FFFF16
) T
8
but the timer counter does not run if n=0000
, f
C32
16
Specification
"
16
", it stops counting after reloading.
16
" and is reloaded
16
14. Timer (Timer A)