SN66021 - 4-Channel Speech Controller
I I I I 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
SN66021 Features
* Single power supply 2.4V
* 5.1V Built in a tiny controller 20 seconds voice capacity are provided One 4-bit input port, two 4-bit I/O ports and one 4-bit output port are provided 256
* 4 bits RA
