SNC21085

1-CH H.Q. Speech Controller

5.10

Push-Pull Output

An 8-level volume control Push-Pull Direct Drive circuit is built-in SNC21085. The

designed in SNC21085. With this advanced circuit, the chip is capable of driving

speaker directly without external transistors.

Audio in

0.5 Vdd

VOP

+

+

0.5 Vdd

-

-

VON

Push-Pull Output

5.11

Mark register

If user had insert Mark into wave file. The Mark data will be fetched into this register

during voice playing. The content of this register will be cleared to “0” automatically

once user accesses this register.

5.12

Low Voltage Hold

This function enables chips entering Hold mode when voltage is below 2.1V and will

back to work after voltage rise up to 2.1V. Chip will not entering hold mode before

current Instruction finish. When chip in Hold mod, ROSC will keep running, and all the

content of Latch/Register/SRAM will keep unchanged.

Ver: 1.0

November 08, 2006

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