Block Diagram; Pin Assignment - Holtek HT827A0 Manual

Block Diagram

I N T T M R
O S C 1
8 - b i t H i g h P e r f o r m a n c e
O S C 2
M i c r o c o n t r o l l e r
R E S
V D D
V S S
P A 0
P A 7
P B 0 P B 7 P C 0

Pin Assignment

P A 3 1 4 8 P B 4
P A 2 2 4 7 P B 5
P A 1 3 4 6 P B 6
N C 4 4 5 P B 7
P A 0 5 4 4 P A 4
6 4 3
P B 3 P A 5
P B 2 7 4 2 P A 6
P B 1 8 4 1 P A 7
9 4 0
P B 0 N C
V S S 1 0 3 9 N C
P E 0 1 1 3 8 N C
1 2 3 7
P E 1 O S C 2
P E 2 1 3 3 6 O S C 1
P E 3 1 4 3 5 V D D
1 5 3 4
I N T R E S
T M R 1 6 3 3 A U D
1 7 3 2
P D 0 P C 7
1 8 3 1
P D 1 P C 6
P D 2 1 9 3 0 P C 5
2 0 2 9
P D 3 P C 4
2 1 2 8
P D 4 P C 3
P D 5 2 2 2 7 P C 2
2 3 2 6
P D 6 P C 1
2 4 2 5
P D 7 P C 0
0 6 & % )
 " &  , 1 2
V o i c e R O M
& C o n t r o l l e r
V o i c e
S y n t h e s i z e r &
T o n e g e n e r a t o r
C u r r e n t T y p e
D / A O u t p u t
3 6 - b i t B i d i r e c t i o n a l
I / O P o r t s
P C 7 P D 0 P D 7 P E 0 P E 3
2
HT827A0
A U D
March 15, 2000