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4553 Datasheet(PDF) 31 Page - Renesas Technology Corp

Part # 4553
Description  SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER
PDF  145 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

4553 Datasheet(HTML) 31 Page - Renesas Technology Corp

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Rev.3.02
Dec 22, 2006
page 31 of 142
REJ03B0024-0302
4553 Group
Fig. 23 Timer structure (2)
1
W42
0
W31, W30
01
00
10
11
T3F
(TLCA)
(TLCA)
Timer 3
interrupt
Timer 3 underflow signal (T3UDF)
Timer LC (4)
Reload register RLC (4)
Register A
1/2
LCD
clock
W43
STCK
1 - - 4 - - - - - - - - 13 14 15 16
Timer 3 (16)
W32
XCIN
1 - - - - - - - - - - - - - - 16
Watchdog timer
INTSNC
Q
R
S
WDF1
WRST instruction
Q
R
S
WEF
DWDT instruction
+
WRST instruction
RESET signal
Q
T
D
R
RESET signal
Watchdog reset signal
1
W33
0
ORCLK
(Note)
Notes: The WEF flag is set to “1” at system reset or RAM back-up mode.
Data is set automatically from each reload register
when timer underflows
(auto-reload function).



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