HT37A70/60/50/40/30/20
Block Diagram
M id i
E n g in e
C o d e
A D P C M
C o d e
W a tc h d o g T im e r
O s c illa to r
W a tc h d o g
T im e r
L o w
V o lta g e
R e s e t
R O M P ro g ra m
M e m o ry
R A M D a ta
M e m o ry
A /D
C o n v e rts
S ta c k
D /A
C o n v e rts
8 - b it
R IS C C o re
I/O
P o rts
1 6 /8 - b it
T im e r s
In te g ra te d
P o w e r A m p lifie r
R C /C ry s ta l
O s c illa to r
In te rru p t
C o n tr o lle r
C R /F
Pin Assignment
N C
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
O S C 2
O S C 1
R E S
P C 0
1
2
3
4
5
6
7
8
9
1 0
P C 1
P C 2
P C 3
O S C 2
O S C 1
R E S
V S S
V D D
V S S _ D A C
2 0
1 9
1 8
1 7
1 6
1 5
1 4
1 3
1 2
1 1
H T 3 7 A 2 0
2 0 S O P -A
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
P A 0
R C H
V D D _ D A C
V S S
V D D
V S S _ D A C
V D D _ D A C
L C H
R C H
A U D _ IN
V B IA S
S P 1
V S S _ A M P
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
N C
N C
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
P A 0
N C
N C
S P 0
V D D _ A M P
P D 2
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
O S C 2
O S C 1
R E S
V S S
V D D
V S S _ D A C
V D D _ D A C
L C H
R C H
A U D _ IN
V B IA S
S P 1
V S S _ A M P
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
P D 0
P D 1
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
P A 0
N C
N C
S P 0
V D D _ A M P
P C 0
1
2
3
4
5
6
7
8
9
1 0
1 1
1 2
1 3
1 4
P C 1
P C 2
P C 3
P D 0
P D 1
P D 2
P D 3
O S C 2
O S C 1
R E S
V S S
V D D
V S S _ D A C
2 8
2 7
2 6
2 5
2 4
2 3
2 2
2 1
2 0
1 9
1 8
1 7
1 6
1 5
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
P A 0
N C
N C
N C
N C
R C H
V D D _ D A C
H T 3 7 A 7 0 /6 0 /5 0 /4 0
2 8 S O P -A
H T 3 7 A 3 0
2 8 S O P -A
H T 3 7 A 2 0
2 8 S O P -A
P D 0
P D 1
P D 2
P D 3
N C
N C
N C
O S C 2
O S C 1
9
R E S
N C
N C
N C
V S S
V D D
V S S _ D A C
V D D _ D A C
L C H
R C H
A U D _ IN
V B IA S
S P 1
V S S _ A M P
V D D _ A M P
8
7
6
5
4
3
2
1
4 8
4 7
4 6
4 5
4 4
4 3
4 2
4 1
4 0
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1
2 2
2 3
2 4
3 9
3 8
3 7
3 6
3 5
3 4
3 3
3 2
3 1
3 0
2 9
2 8
2 7
2 6
2 5
P C 7
P C 6
P C 5
P C 4
P C 3
P C 2
P C 1
P C 0
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
P A 0
N C
N C
N C
N C
N C
N C
N C
S P 0
N C
N C
N C
N C
N C
N C
O S C 2
7
8
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
O S C 1
R E S
V S S
V D D
V S S _ D A C
V D D _ D A C
L C H
R C H
A U D _ IN
V B IA S
S P 1
V S S _ A M P
6
5
4
3
2
1
N C
V D D _ A M P
6 4 6 3 6 2 6 1 6 0
2 0 2 1 2 2 2 3 2 4
S P 0
P B 0
P B 1
P B 2
N C
N C
N C
H T 3 7 A 7 0 /6 0 /5 0 /4 0
6 4 Q F P -A
N C
N C
P B 3
5 9 5 8 5 7 5 6 5 5 5 4 5 3 5 2
2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2
P B 4
P B 5
P B 6
P B 7
V D D _ A D C
V S S _ A D C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
5 1
5 0
4 9
4 8
4 7
4 6
4 5
4 4
4 3
4 2
4 1
4 0
3 9
3 8
3 7
3 6
3 5
3 4
3 3
P D 3
P D 2
P D 1
P D 0
P C 7
P C 6
P C 5
P C 4
P C 3
P C 2
P C 1
P C 0
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
O S
R
V
V
V S S _ D
V D D _ D
L
R
O S
N C
N C
N C
N C
N C
N C
N C
N C
N C
N C
9
1 0
1 1
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 0
2 1 2 2 2 3 2 4 2 5 2 6 2 7 2 8 2 9 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 4 0
8
7
6
5
4
3
2
1
8 0 7 9 7 8 7 7 7 6 7 5 7 4 7 3 7 2 7 1 7 0 6 9 6 8 6 7 6 6 6 5 6 4 6 3 6 2 6 1
6 0
5 9
5 8
5 7
5 6
5 5
5 4
5 3
5 2
5 1
4 0
4 9
4 8
4 7
4 6
4 5
4 4
4 3
4 2
4 1
N C
C 2
C 1
E S
S S
D D
A C
A C
C H
C H
H T 3 7 A 7 0 /6 0 /5 0 /4 0
8 0 L Q F P -A
P D 3
P D 2
P D 1
P D 0
P C 7
P C 6
P C 5
P C 4
P C 3
P C 2
P C 1
P C 0
P A 7
P A 6
P A 5
P A 4
P A 3
P A 2
P A 1
P A 0
V S S
V D D
P B 7
P B 6
P B 5
P B 4
P B 3
P B 2
P B 1
P B 0
N C
N C
N C
N C
S P 0
V D D
V S S
S P 1
V B IA
A U D
_ A M P
_ A M P
_ A D C
_ A D C
S
_ IN
P A 0
H T 3 7 A 3 0
4 8 S S O P -A
Rev. 1.00
2
February 17, 2009
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
