m30833fjgp Renesas Electronics Corporation., m30833fjgp Datasheet - Page 164

• 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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R
M
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3
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Table 14.3 Specifications in Timer Mode
NOTES:
2
0
Count Source
Counting Operation
Divide Ratio
Counter Start Condition
Counter Stop Condition
Interrupt Request Generation Timing The timer counter underflows
TAi
TAi
Read from Timer
Write to Timer
Selectable Function
14.1.1 Timer Mode
1
9
C
3 .
B
In timer mode, the timer counts an internally generated count source (see Table 14.3). Figure 14.8 shows
the TAiMR register (i=0 to 4) in 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 141
8 /
, 3
M
3
f
• The timer decrements a counter value
1/(n+1)
The TAiS bit in the TABSR register is set to "1" (starts counting)
The TAiS bit is set to "0" (stops counting)
Programmable I/O port or gate input
Programmable I/O port or pulse output
The TAi register indicates counter value
• When the timer counter stops,
• While counting,
• Gate function
• Pulse output function
2
1
(It is transferred to the counter at the next reload timing)
, f
When the timer counter underflows, content of the reload register is reloaded into the
count register and counting resumes.
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
Input signal to the TAi
The polarity of the TAi
C
f o
8
8 /
, f
4
3
8
2n (1)
) T
8
, f
n: setting value of the TAi register (i=0 to 4)
C32
IN
OUT
pin determines whether the timer counter starts or stops counting
pin is inversed whenever the timer counter underflows
Specification
0000
16
to FFFF
14. Timer (Timer A)
16