23
µ
PD754202, 754202(A)
Figure 6-5. Timer Counter (Channel 2) Block Diagram
Internal bus
8
8
8
8
8
8
8
TM25
TM24
TM23
TM22
TM21
TM20
TM26
–
MPX
Decoder
From clock
generator
CP
16-bit timer counter mode
Timer operation start
Count register (8)
Comparator (8)
MPX (8)
Match
TOUT
F/F
T2
High-level period
setting modulo register (8)
Modulo register (8)
Reset
–
–
TOE2
REMC
NRZB
NRZ
–
8
TMOD2
TMODH
TC2
Reload
Overflow
Carrier generator mode
PORT3.2
PMGA bit 2
P32
output
latch
Port 3
input/output
mode
Output buffer
P32/PTO2
Timer counter
(channel 1)
clock input
INTT2
IRQT2
set signal
RESET
IRQT2 clear signal
Timer counter (channel 1) match signal
(When 16-bit timer counter mode)
Timer counter (channel 1)
clear signal
(When 16-bit timer counter
mode)
Timer counter (channel 1) match signal
(When carrier generator mode)
TM2
Clear
Selector
Selector
f
x
f
x
/2
f
x
/2
4
f
x
/2
6
f
x
/2
8
f
x
/2
10
SET1
Note
0
Note
Instruction execution
Caution Always set bit 7 to 0 when setting data to TC2.
Содержание Mu754202
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