M37221 Mitsubishi, M37221 Datasheet - Page 16

• Manufacturer Part Number: M37221
• Description: SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER with ON-SCREEN DISPLAY CONTROLLER
• Manufacturer: Mitsubishi

Fig. 9. Timer block diagram
16
Notes 1 : “H” pulse width of external clock inputs TIM2 and TIM3 needs 4 machine cycles or more.
T12M : Timer 12 mode register
T34M : Timer 34 mode register
Selection gate :
P2
P2
Connected to black
colored side at reset
4
3
H
/TIM2
/TIM3
2 : When the external clock source is selected, timers 2 and 3 are counted at a rising edge
3 : In the stop mode or the wait mode, external clock inputs TIM2 and TIM3 cannot be used.
SYNC
X
of input signal.
IN
1/4096
1/2
1/8
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER
T34M4
T12M0
T12M4
T34M0
T12M1
T34M5
T34M1
T12M3
T34M2
T12M2
T34M3
M37221EF-XXXSP,M37221EFSP
Timer 1 latch (8)
Timer 2 latch (8)
Timer 3 latch (8)
Timer 4 latch (8)
Timer 4 (8)
Timer 1 (8)
Timer 2 (8)
Timer 3 (8)
8
8
8
8
with ON-SCREEN DISPLAY CONTROLLER
MITSUBISHI MICROCOMPUTERS
8
8
8
8
8
8
8
8
FF
07
16
16
Data bus
Timer 1
interrupt request
Timer 2
interrupt request
Timer 3
interrupt request
Timer 4
interrupt request
Reset
STP
instruction