HT49RA0 Datasheet, PDF (2/39 Pages) Holtek Semiconductor Inc – Remote Type 8-Bit MCU with LCD

Block Diagram
P ro g ra m
m e m o ry
P ro g ra m
C o u n te r
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
D ATA
M e m o ry
X
HT49RA0/HT49CA0
TM R C
TM R
M
U
X
fS Y S /4
fS Y S
R T C In te rru p t
P B 2 /T M R
S Y S C L K /4
F r e q u e n c y D iv id e r
L e v e l o r C a r r ie r
C a r r ie r C o n tr o l
P C 0 C o n tro l
P C 0 /R E M
In s tr u c tio n
D ecoder
T im in g
G e n e r a tio n
O SC4
O SC1
RESB
VDD
VSS
O SC3
M UX
A LU
S h ifte r
STATU S
BP
ACC
LC D
M e m o ry
L C D D r iv e r
C O M 0~
COM 2
C O M 3/
S E G 20
S E G 0~
S E G 19
R TC
W DT
T im e B a s e
S Y S C L K /4
M
U
X
R TC O SC
W DT O SC
PA
PO RT A
P A 0~P A 7
PO RT B
PB
P B 0 /IN T 0
P B 1 /IN T 1
P B 2 /T M R
P B 3~P B 7
H A L T E N /D IS
L V D /L V R
O SC3
O SC4
Pin Assignment
PA5
PA6
PA7
P B 0 /IN T 0
P B 1 /IN T 1
P B 2 /T M R
PB3
PB4
PB5
VSS
P C 0 /R E M
PB6
PB7
52 51 50 494847 464544 4342 4140
1
39
2
38
3
37
4
36
5
35
6
34
7
H T 4 9 R A 0 /H T 4 9 C A 0
33
8
5 2 Q F P -A
32
9
31
10
30
11
29
12
28
13
27
1415 1617 1819 20 2122 232425 26
SEG 3
SEG 4
SEG 5
SEG 6
SEG 7
SEG 8
SEG 9
S E G 10
S E G 11
S E G 12
S E G 13
S E G 14
S E G 15
Rev. 1.20
2
October 24, 2007