
SNC678
4-Channel Speech Controller
======== CONTENTS ========
1.
INTRODUCTION...............................................................................................................3
2.
FEATURES.......................................................................................................................3
3.
BLOCK DIAGRAM ...........................................................................................................4
4.
PIN ASSIGNMENT ...........................................................................................................4
5.
FUNCTION DESCRIPTIONS............................................................................................5
5.1
5.2
5.3
5.4
5.5
5.6
5.7
5.8
5.9
5.10
O
SCILLATOR
...................................................................................................................5
ROM..............................................................................................................................5
RAM ..............................................................................................................................5
P
OWER
D
OWN
M
ODE
......................................................................................................5
S
AMPLING
R
ATE
C
OUNTERS
............................................................................................5
A
UTO
R
EPETITION
...........................................................................................................6
I/O P
ORTS
......................................................................................................................6
IR F
UNCTION
..................................................................................................................7
8-
BIT
DAC......................................................................................................................7
8-
BIT
PWM.....................................................................................................................8
6.
ABSOLUTE MAXIMUM RATING.....................................................................................9
7.
ELECTRICAL CHARACTERISTICS................................................................................9
8.
ROSC PERFORMANCE.................................................................................................10
9.
APPLICATION CIRCUIT ................................................................................................11
10.
BONDING PAD...........................................................................................................13
Ver: 1.2
August 26, 2003
1