M37540M4 Datasheet, PDF (25/64 Pages) Mitsubishi Electric Semiconductor – SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER

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MITSUBISHI MICROCOMPUTERS
7540 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Data bus
Prescaler 1 latch (8)
Timer 1 latch (8)
P00/CNTR1
f(XIN)/16
Prescaler 1 (8)
Rising edge detected
Falling edge detected
Timer 1 (8)
Pulse width HL
continuously
measurement mode
Period measurement mode
CNTR1 active
edge switch bit
Data bus
Timer 1 interrupt
request bit
Timer A (low-order) latch (8)
Timer A (high-order) latch (8)
Timer A (low-order) (8)
f(XIN)/16
Timer A operation mode bit
Timer A count
stop bit
Timer A (high-order) (8)
Timer A interrupt
request bit
Fig. 25 Block diagram of timer 1 and timer A
25