SN66340
4-Channel Speech Controller
INTRODUCTION
SN66340 is a 340 seconds single chip 4-channel voice synthesizer IC which
contains I/O ports and a tiny controller. By programming through the tiny
controller, user’s applications including section combination, trigger modes,
output status, high performance melody, multiple voices, and other logic
functions can be implemented.
FEATURES
Single power supply 2.4V – 5.1V
Built in a tiny controller
340 seconds voice capacity are provided
One 4-bit input port, two 4-bit I/O ports and one 4-bit output port are
provided
128*4 bits RAM are provided
Maximum 64k program ROM is provided
Readable ROM code data
Built in a high quality speech synthesizer
Four independent voice channels
Adaptive playing speed from 4k-40kHz is provided for all 4 channels
individually
Automatic repetition for every channel
A 6-bit*8-bit Multiplier is embed to modulate the volume of synthesized
voices
Two digital mixers (with saturation control) are provided
Two 8-bit current output DA converters (Channel 1 + Channel 2
→
DA1,
Channel 3 + Channel 4
→
DA2 )
System clock: 2M Hz ( R-type or Crystal Option)
1
December 6, 2000
SN66340
4-Channel Speech Controller
PIN ASSIGNMENT
Symbol
P10
P11
P12
P13
P20
P21
P22
P23
P30
P31
P32
P33
P40
P41
P42
P43
V
DD
GND
OSC/XIN
XOUT
CKSEL
I/O
I
I
I
I
Function Description
Bit0 of input port 1
Bit1 of input port 1
Bit2 of input port 1
Bit3 of input port 1
I/O Bit0 of I/O port 2
I/O Bit1 of I/O port 2
I/O Bit2 of I/O port 2
I/O Bit3 of I/O port 2
I/O Bit0 of I/O port 3
I/O Bit1 of I/O port 3
I/O Bit2 of I/O port 3
I/O Bit3 of I/O port 3
O
O
O
O
I
I
I
O
I
Bit0 of output port 3
Bit1 of output port 3
Bit2 of output port 3
Bit3 of output port 3
Positive power supply
Negative power supply
Oscillator / Crystal In
Crystal Out
Clock type select
‘L’
→
R type (1M)
‘H’
→
2M Crystal
Internal pull low.
D/A current output, for channel 1 and 2
D/A current output, for channel 3 and 4
VO1
VO2
O
O
2
December 6, 2000
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