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233
CHAPTER 12 16-BIT RELOAD TIMER
12.2
Block Diagram of the 16-bit Reload Timer
There are two 16-bit reload timers in MB90460/465 series. Each of them consists of the
seven blocks as shown in the block diagram below.
■
Block Diagram of the 16-bit Reload Timer
Figure 12.2-1 shows the block diagram of the 16-bit reload timer
Figure 12.2-1 Block Diagram of the 16-bit Reload Timer
●
Count clock generation circuit
This circuit generates the count clock for the 16-bit reload timer from the machine clock or external input
clock.
●
Reload control circuit
This circuit controls the reload operation when the timer is started and when an underflow occurs.
F
2
MC-16LX
bus
16-
b
it relo
a
d regi
s
ter
Relo
a
d
s
ign
a
l
Relo
a
d
control
circ
u
it
16-
b
it timer regi
s
ter
Co
u
nt clock gener
a
tion
circ
u
it
M
a
chine
clock
Pre-
s
c
a
ler
Cle
a
r
G
a
te
inp
u
t
V
a
lid
clock
j
u
dgment
circ
u
it
W
a
it
s
ign
a
l
Intern
a
l
clock
Pin
Inp
u
t
control
circ
u
it
Extern
a
l clock
Clock
s
elector
S
elect
s
ign
a
l
Invert
O
u
tp
u
t control circ
u
it
O
u
tp
u
t
s
ign
a
l
gener
a
tion
circ
u
it
To UART0
a
nd
UART1 (*1)
<To the A/D
converter>
Pin
F
u
nction
s
election
Oper
a
tion
control
circ
u
it
Timer control
s
t
a
t
us
regi
s
ter (TMC
S
R0)(*1) <TMC
S
R1>
Interr
u
pt re
qu
e
s
t
s
ign
a
l
#
3
0 (1EH)(*2)
<#1
8
(12H)>
*1 Thi
s
regi
s
ter incl
u
de
s
ch
a
nnel 0
a
nd ch
a
nnel 1. The regi
s
ter enclo
s
ed in <
a
nd > indic
a
te
s
the
ch
a
nnel 1 regi
s
ter.
*2 Interr
u
pt n
u
m
b
er
P16/TO0(*1)
<P21/TO1>
P20
P15
TMRD0*1
<TMRD1>
Summary of Contents for MB90460 Series
Page 1: ...The following document contains information on Cypress products ...
Page 3: ......
Page 5: ......
Page 9: ...iv ...
Page 41: ...22 CHAPTER 1 OVERVIEW ...
Page 45: ...26 CHAPTER 2 NOTES ON HANDLING DEVICES ...
Page 83: ...64 CHAPTER 3 CPU ...
Page 95: ...76 CHAPTER 4 RESET ...
Page 107: ...88 CHAPTER 5 CLOCK ...
Page 131: ...112 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 175: ...156 CHAPTER 7 INTERRUPT ...
Page 181: ...162 CHAPTER 8 MODE SETTING ...
Page 223: ...204 CHAPTER 9 I O PORT ...
Page 237: ...218 CHAPTER 10 TIME BASE TIMER ...
Page 247: ...228 CHAPTER 11 WATCHDOG TIMER ...
Page 275: ...256 CHAPTER 12 16 BIT RELOAD TIMER ...
Page 373: ...354 CHAPTER 14 MULTI FUNCTIONAL TIMER ...
Page 485: ...466 CHAPTER 16 PWC Timer ...
Page 531: ...512 CHAPTER 17 UART ...
Page 559: ...540 CHAPTER 19 DELAYED INTERRUPT GENERATOR MODULE ...
Page 589: ...570 CHAPTER 20 8 10 BIT A D CONVERTER ...
Page 601: ...582 CHAPTER 21 ROM CORRECTION FUNCTION ...
Page 633: ...614 CHAPTER 23 512K 1024K BIT FLASH MEMORY ...
Page 645: ...626 CHAPTER 24 EXAMPLE OF F2 MC 16LX MB90F462 F462A F463A CONNECTION FOR SERIAL WRITING ...
Page 715: ...696 APPENDIX ...
Page 716: ...697 INDEX INDEX The index follows on the next page This is listed in alphabetic order ...
Page 739: ......