HT46R54 データシートの表示（PDF） - Holtek Semiconductor
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HT46R54 Datasheet PDF : 42 Pages
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HT46R53/HT46R54
V DD
0 .0 1 m F *
100kW
RES
10kW
0 .1 m F *
Reset Circuit
Note:
²*² Make the length of the wiring, which is con-
nected to the RES pin as short as possible, to
avoid noise interference.
VDD
RES
S S T T im e - o u t
tS S T + tO P D
C h ip R e s e t
Reset Timing Chart
H A LT
W DT
W DT
T im e - o u t
R eset
RES
E x te rn a l
O SC1
SST
1 0 - b it R ip p le
C o u n te r
W a rm R e s e t
C o ld
R eset
P o w e r - o n D e te c tio n
Reset Configuration
The register states are summarized below:
Register
Reset(Power On)
WDT Time-out
RES Reset
(Normal Operation) (Normal Operation)
TMR
xxxx xxxx
xxxx xxxx
xxxx xxxx
TMRC
00-0 1000
00-0 1000
00-0 1000
Program
Counter
0000H
0000H
0000H
MP0
-xxx xxxx
-xxx xxxx
-xxx xxxx
MP1
-xxx xxxx
-xxx xxxx
-xxx xxxx
ACC
xxxx xxxx
uuuu uuuu
uuuu uuuu
TBLP
xxxx xxxx
uuuu uuuu
uuuu uuuu
TBLH
xxxx xxxx
uuuu uuuu
uuuu uuuu
STATUS
--00 xxxx
--1u uuuu
--uu uuuu
INTC
-000 0000
-000 0000
-000 0000
PA
1111 1111
1111 1111
1111 1111
PAC
1111 1111
1111 1111
1111 1111
PB
1111 1111
1111 1111
1111 1111
PBC
1111 1111
1111 1111
1111 1111
PC
---1 1111
---1 1111
---1 1111
PCC
---1 1111
---1 1111
---1 1111
PD
---- ---1
---- ---1
---- ---1
PDC
---- ---1
---- ---1
---- ---1
PWM
xxxx xxxx
xxxx xxxx
xxxx xxxx
ADRL
xxxx ----
xxxx ----
xxxx ----
ADRH
xxxx xxxx
xxxx xxxx
xxxx xxxx
ADCR
0100 0000
0100 0000
0100 0000
ACSR
---- --00
---- --00
---- --00
Note:
²*² stands for ²warm reset²
²u² stands for ²unchanged²
²x² stands for ²unknown²
RES Reset
(HALT)
xxxx xxxx
00-0 1000
0000H
-xxx xxxx
-xxx xxxx
uuuu uuuu
uuuu uuuu
uuuu uuuu
--01 uuuu
-000 0000
1111 1111
1111 1111
1111 1111
1111 1111
---1 1111
---1 1111
---- ---1
---- ---1
xxxx xxxx
xxxx ----
xxxx xxxx
0100 0000
---- --00
WDT Time-out
(HALT)*
uuuu uuuu
uu-u uuuu
0000H
-uuu uuuu
-uuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
--11 uuuu
-uuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
uuuu uuuu
---u uuuu
---u uuuu
---- ---u
---- ---u
uuuu uuuu
uuuu ----
uuuu uuuu
uuuu uuuu
---- --uu
Rev. 1.40
13
July 12, 2005
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