m5m51016btp Renesas Electronics Corporation., m5m51016btp Datasheet - Page 18

• Manufacturer Part Number: m5m51016btp
• Description: Renesas 16-bit Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

M30245 Group
Rev.2.00 Oct 16, 2006
REJ09B0340-0200
Figure 2.2.3. Timer A-related registers (2)
Count start flag
(b15
b7
b7
Timer Ai register (i = 0 to 4) (Note 1)
b6
b5
b4
b8)
b0
b3
b7
b2
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Note 1 : Read and write data in 16-bit units.
Note 2 : Counts pulses from an external source of timer overflow.
Note 3 : Use MOV instruction to write to this register.
Note 4 : When setting value is n, PWM period and “H” width of PWM pulses are:
Note 5 : When setting value of high-order address is n and setting value of low-
Note 6 : When the Timer Ai register is set to “0000
Note 7 : When the Timer Ai register is set to “0000
Event counter
b1
Timer mode
timer mode
16-bit PWM
8-bit PWM
One-shot
mode
Mode
b0
b0
PWM period : (2
PWM pulse “H” width : n/fi
order address is m, PWM period and “H” width of PWM pulse are:
PWM period : (2
PWM pulse “H” width : (m + 1)n/fi
operate and the Timer Ai interrupt request is not generated. When the
pulse is se to output, the pulse does not output from the TAiOUT pin.
does not operate and the output level of the TAiOUT pin remains “L”
level, therefore the Timer Ai interrupt request is not generated. This also
occurs in the 8-bit pulse width modulator mode when the significant 8
high-order bits in the Timer Ai register are set to “00
Bit Symbol
Nothing is assigned. Write “0” when writing to these bits.
The contents are indeterminate if read.
TA0S
TA1S
TA2S
TA3S
TA4S
Symbol
TABSR
Symbol
TA0
TA1
TA2
TA3
TA4
16-bit counter (set to divide ratio)
Low-order bits: 8-bit prescaler
(set to PWM period) (Notes 5, 7)
High-order bits : 8-bit PWM
(set to PWM pulse "H" width) (Notes 5, 7)
16-bit counter (set to one-shot width)
(Note 6)
16-bit PWM (set to PWM pulse "H" width)
(Note 4, 7)
16-bit counter (set to divide ratio) (Note 2)
16
8-
- 1)/fi
1) X (m + 1)/fi
Timer A0 count start flag
Timer A1 count start flag
Timer A2 count start flag
Timer A3 count start flag
Timer A4 count start flag
Function
Bit Name
Address
0380
16
16
0387
0389
038B
038D
038F
”, the counter does not
”, the pulse width modulator
16
Address
16
16
16
16
16
, 0386
, 0388
, 038A
, 038E
, 038C
16
”
0 : Stops counting
1 : Starts counting
16
16
16
16
16
00
low-order addresses) (Note 3)
0000
0000
0000
0000
16
16
16
to FE
16
16
Values that can be set
XXX00000
When reset
to FFFF
to FFFF
to FFFF
to FFFF
Function
16
(Both high-order and
16
16
16
16
2
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
When reset
(Note 3)
(Note 3)
R W
O O
O O
O O
O O
O O
_ _
O O
O O
R W
X O
X O
X O
2. Timer A