SNC26041
One Channel Speech Controller
3. PIN ASSIGNMENT
Symbol
P20~P23
Rosc
I/O Function Description
I/O I/O port 2: IO
I
Oscillation component connection pin
BUO1
O
PWM output 1
BUO2
RST
O
I
PWM output 2
RST=1ꢁ Reset Chip (Active H)
CVDD
CGND
I
Positive power supply for CPU
Negative power supply for CPU
I
VDDIO
GNDIO
Test
I
I
I
Positive power supply for I/O
Negative power supply for I/O
Test pin
4. Block Diagram
ROM
Program/Speech
84K×12 bits
Address Pointers/ STACK
Timing
Generator
OSC
SRAM (64+8 nibbles)
Watch Dog
Timer
Sampling Rate Counter
Voice
Synthesizer
PWM
Circuit
Timer
ALU
PWM IO
IO port 2
4
Ver: 1.7
October 14, 2009
SONIX [ SONIX TECHNOLOGY COMPANY ]
