110
µPD750008 USER'S MANUAL
Figure 5-29. Block Diagram of the Timer Counter (Channel 1)
Count register (8)
MPX
Timer operation start signal
888
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
PORT2.1TOE1
CP
Match
8
8