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Figure 6-1. Block Diagram of 8-Bit Timer/Event Counter 50
8-bit compare
register 50 (CR50)
TI50/P33
f
/2
X
3
f
/2
X
5
f
/2
X
7
8-bit timer counter
f
/2
X
9
f
/2
X
11
f
/2
X
3
TCL502 TCL501 TCL500
Timer clock select
register 50 (TCL50)
Figure 6-2. Block Diagram of 8-Bit Timer/Event Counter 51
8-bit compare
register 51 (CR51)
TI51/P34
f
/2
X
3
f
/2
X
5
f
/2
X
8-bit timer counter
7
f
/2
X
9
f
/2
X
11
f
/2
X
3
TCL512 TCL511 TCL510
Timer clock select
register 51 (TCL51)
CHAPTER 6 8-BIT TIMER/EVENT COUNTERS 50 TO 53
Internal bus
Match
OVF
50 (TM50)
Clear
Selector
TCE50 TMC506 TMC504 LVS50 LVR50 TMC501 TOE50
Timer mode control
register 50 (TMC50)
Internal bus
Internal bus
Match
OVF
51 (TM51)
Clear
Selector
TCE51 TMC516 TMC514 LVS51 LVR51 TMC511 TOE51
Timer mode control
register 51 (TMC51)
Internal bus
User's Manual U15104EJ2V0UD
Selector
INTTM50
S
Q
INV
R
S
Level
inversion
R
Selector
INTTM51
S
Q
INV
R
S
Level
inversion
R
TO50/P130
Output latch
(P130)
TO51/P131
Output latch
(P131)
97
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