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UPD75218 Datasheet(PDF) 19 Page - NEC

Part # UPD75218
Description  4-BIT SINGLE-CHIP MICROCOMPUTER
PDF  62 Pages
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Manufacturer  NEC [NEC]
Direct Link  http://www.nec.com/
Logo NEC - NEC

UPD75218 Datasheet(HTML) 19 Page - NEC

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19
µPD75218
5.5
TIMER/EVENT COUNTER
The
µPD75218 incorporates one channel of timer/event counter. The timer/event counter has the following
functions:
• Program interval timer operation
• Event counter operation
• Count state read function
Fig. 5-4 Timer/Event Counter Block Diagram
Note
Instruction execution
P13/TI0
Input buffer
From clock
generator
MPX
TMn6 TMn5 TMn4 TMn3 TMn2
SET1Note
TM0
Timer operation start
CP
Count register (8)
Clear
8
Comparator (8)
8
8
Modulo register (8)
8
8
Internal bus
TMOD0
Match
IRQT0
clear
T0
TMn7
TMn1 TMn0
INTT0
IRQT0
set signal
(See Fig. 5-1.)



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