
Timer A
deeopmen
Preliminary Specifications REV.E
Specifications in this manual are tentative and subject to change.
Mitsubishi microcomputers
M30220 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
68
Figure 1.13.5. Timer A-related registers (2)
Symbol
TABSR0
Address
0380
16
When reset
00
16
Count start flag 0
Bit name
Function
Bit symbol
b7
b6
b5
b4
b3
b2
b1
b0
AAAAAAAAAAAAAAA
AAAAAAAAAAAAAAA
AAAAAAAAAAAAAAA
Timer B1 count start flag
TB1S
Timer B2 count start flag
Timer A4 count start flag
Timer A3 count start flag
Timer A2 count start flag
Timer A1 count start flag
Timer A0 count start flag
0 : Stops counting
1 : Starts counting
TB2S
TA4S
TA3S
TA2S
TA1S
TA0S
AA
AA
AA
Symbol
TA0
TA1
TA2
TA3
TA4
TA5
TA6
TA7
Address
0387
16
,0386
16
0389
16
,0388
16
038B
16
,038A
16
038D
16
,038C
16
038F
16
,038E
16
0347
16
,0346
16
0349
16
,0348
16
034B
16
,034A
16
When reset
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
Indeterminate
b7
b0 b7
b0
(b15)
(b8)
Timer Ai register (Note)
W
R
Timer mode
Counts an internal count source
0000
16
to FFFF
16
Function
Values that can be set
Event counter mode
Counts pulses from an external source or timer overflow
0000
16
to FFFF
16
One-shot timer mode
Counts a one shot width
0000
16
to FFFF
Pulse width modulation mode (16-bit PWM)
Functions as a 16-bit pulse width modulator
Pulse width modulation mode (8-bit PWM)
Timer low-order address functions as an 8-bit
prescaler and high-order address functions as an 8-bit
pulse width modulator
00
16
to FE
16
(Both high-order
and low-order
addresses)
0000
16
to FFFE
16
Note: Read and write data in 16-bit units.
AA
AA
AA
A
A
A
Symbol
TABSR1
Address
0340
16
When reset
000XX000
2
Count start flag 1
Bit name
Function
Bit symbol
W
R
b7
b6
b5
b4
b3
b2
b1
b0
AAAAAAAAAAAAAAA
AAAAAAAAAAAAAAA
AAAAAAAAAAAAAAA
Timer B5 count start flag
TB5S
Timer B3 count start flag
Timer A7 count start flag
Timer A6 count start flag
Timer A5 count start flag
0 : Stops counting
1 : Starts counting
TB3S
TA7S
TA6S
TA5S
AA
AA
AA
0 : Stops counting
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be
indeterminate.