SNC26020
One Channel Speech Controller
3. PIN ASSIGNMENT
Symbol
P20~P23
P30~P33
Rosc
BUO1
BUO2
RST
CVDD
CGND
VDDIO
GNDIO
Test
I/O
I/O
I/O
I
O
O
I
I
I
I
I
I
Function Description
I/O port 2: IO
I/O port 3: IO
Oscillation component connection pin
PWM output 1
PWM output 2
RST=1 Reset Chip (Active H)
Positive power supply for CPU
Negative power supply for CPU
Positive power supply for I/O
Negative power supply for I/O
Test pin
4.
Block Diagram
ROM
Program/Speech
44K×12 bits
Address Pointers/ STACK
SRAM
(64+16 nibbles)
Timer
ALU
Timing
Generator
OSC
Sampling Rate Counter
Watch Dog
Timer
PWM
Circuit
Voice
Synthesizer
PWM IO
IO port 2
IO port 3
Ver: 1.7
4
October 14, 2009
SONIX [ SONIX TECHNOLOGY COMPANY ]
