tmp89fm82t TOSHIBA Semiconductor CORPORATION, tmp89fm82t Datasheet - Page 308

• Manufacturer Part Number: tmp89fm82t
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

19.4
Timer Unit
19.4
this counter, it can generate three types of timer interrupts (INTTMR1 to 3). These timer interrupts can be used to
produce a commutation trigger, position detection start trigger, etc. Also, the mode timer has a capture function which
automatically captures register data in synchronism with position detection or overload protection. This capture func-
tion allows motor revolutions to be calculated by measuring position detection intervals.
fcgck
The timer unit has an up counter (mode timer) which is cleared by a position detection interrupt (INTPDC). Using
Timer Unit
2
1
2
2
2
Prescaler
3
2
4
2
5
2
6
2
7
fcgck/2
fcgck/2
fcgck/2
fcgck/2
fcgck/2
fcgck/2
Clock selector
7
6
5
4
3
2
Figure 19-7 Timer Circuit Configuration
3
7, 6, 5 4, 3, 2, 1
MTCRA
Mode timer
Mode capture register
0
Timer compare register
Mode timer control registers
4
15 to 0
Overflow
MCAP
Page 292
15 to 0
15 to 0
15 to 0
CMP1
CMP2
CMP3
control circuit
Timer reset
7 
comparison
comparison
comparison
magnitude
matching
matching
Timer 1
Timer 2
Timer 3
5
MTCRB
control circuit

Capture
3, 2, 1
3
Capture

Capture overwrite
Debug output
Timer 1 interrupt
INTTMR1
(Commutation)
Timer 2 interrupt
INTTMR2
(Position detection start)
Timer 3 interrupt
INTTMR3
(Overflow)
Overload protective
interrupt INTCLM
Position detection
interrupt INTPDC
TMP89FM82T