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Part Name
Description
HT48RA3(2007) View Datasheet(PDF) - Holtek Semiconductor
Part Name
Description
Manufacturer
HT48RA3
(Rev.:2007)
Remote Type 8-Bit MCU
Holtek Semiconductor
HT48RA3 Datasheet PDF : 38 Pages
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Block Diagram
IN T /P F 0
P ro g ra m
ROM
P ro g ra m
C o u n te r
BP
STAC K
In te rru p t
C ir c u it
IN T C
In s tr u c tio n
R e g is te r
MP
M
U
X
D ATA
M e m o ry
In s tr u c tio n
D ecoder
T im in g
G e n e ra to r
O SC2
O SC1
RES
VDD
VSS
M UX
A LU
S h ifte r
STATU S
ACC
HT48RA3/HT48CA3
TM R 1C
M
U
TM R 1
X
f
S Y S
/4
TM R 1
TM R 0
TM R 0C
M
U
P r e s c a le r
f
S Y S
X
TM R 0
E N /D IS
W D TS
W D T P r e s c a le r
W DT
M
U
f
S Y S
/4
X
W DT O SC
PAC PO RT A
PA
PFD
PBC
PO RT B
PB
P A 0~P A 7
P B 0~P B 7
PCC
PO RT C
PC
P C 0~P C 5
PFC
PO RT F
PF0
PF
Pin Assignment
PB5 1
PB4 2
PA3 3
PA2 4
PA1 5
PA0 6
PB3 7
PB2 8
PB1 9
P B 0 /P F D 1 0
V S S 11
P F 0 /IN T 1 2
P C 0 /T M R 0 1 3
P C 1 14
28 P B 6
27 P B 7
26 P A 4
25 P A 5
24 P A 6
23 P A 7
22 O S C 2
21 O S C 1
20 V D D
19 R E S
1 8 P C 5 /T M R 1
17 P C 4
16 P C 3
15 P C 2
H T 4 8 R A 3 /H T 4 8 C A 3
2 8 S O P -A /S S O P -A
Rev. 1.30
2
October 12, 2007
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