SN66040B controller equivalent, 4-channel speech controller.
Single power supply 2.4V
– 5.1V Built in a tiny controller 40 seconds voice capacity are provided One 4-bit input port, two 4-bit I/O ports and one 4-bit .
including section combination, trigger modes, output status, high performance melody, multiple voices, and other logic f.
I Bit3 ~ Bit0 of input port 1 I/O Bit3 ~ Bit0 of I/O port 2 I/O Bit3 ~ Bit0 of I/O port 3 O I I I O I Bit3 ~ Bit0 of output port 4 Positive power supply Negative power supply Oscillator / Crystal In Crystal Out Clock type select ‘L’ or floating → RC .
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