NEC PD750008 User Manual
Page 130
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µPD750008 USER'S MANUAL
Figure 5-29. Block Diagram of the Timer Counter (Channel 1)
Count register (8)
MPX
Timer operation start signal
8
8
8
From the
clock
generator
Internal bus
TM16
TM15
TM14
TM13
TM12
Comparator (8)
Modulo register (8)
TO enable
flag
P21
output
latch
signal
Port 2
input/
output
mode
Clear signal
T1
TMOD1
Bit 2 of PMGB
P21/PTO1
Output
buffer
Reset
RESET
IRQT1 clear
signal
TOUT
flip-flop
TM1
IRQT1
set signal
INTT1
PORT2.1
TOE1
CP
Match
8
8