Mitsubishi microcomputers
M16C / 61 Group
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Timer B
Timer Bi register (Note)
Symbol
TB0
TB1
Address
When reset
(b15)
(b8)
039116, 039016 Indeterminate
039316, 039216 Indeterminate
039516, 039416 Indeterminate
b7
b0 b7
b0
TB2
Values that can be set
000016 to FFFF16
Function
R W
• Timer mode
Counts the timer's period
• Event counter mode
000016 to FFFF16
Counts external pulses input or a timer overflow
• Pulse period / pulse width measurement mode
Measures a pulse period or width
Note: Read and write data in 16-bit units.
Count start flag
Symbol
TABSR
Address
038016
When reset
0016
b7 b6 b5 b4 b3 b2 b1 b0
Bit symbol
TA0S
TA1S
TA2S
TA3S
TA4S
TB0S
TB1S
TB2S
R W
Bit name
Function
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
Timer B0 count start flag
Timer B1 count start flag
Timer B2 count start flag
0 : Stops counting
1 : Starts counting
Clock prescaler reset flag
Symbol
CPSRF
Address
038116
When reset
0XXXXXXX
b7 b6 b5 b4 b3 b2 b1 b0
2
Bit symbol
Bit name
Function
R W
Nothing is assigned.
In an attempt to write to these bits, write “0”. The value, if read, turns out to be
indeterminate.
0 : No effect
1 : Prescaler is reset
(When read, the value is “0”)
CPSR
Clock prescaler reset flag
Figure 1.16.15. Timer B-related registers (2)
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MITSUBISHI [ Mitsubishi Group ]
