API840中文资料APLUS数据手册PDF规格书

GENERAL DESCRIPTION

API840N is a high-quality voice synthesizer with a capacity of 32 to 40 seconds. A proprietary ADPCM algorithm is used. The audio message is stored in a 1024-Kbit on-chip EPROM.

FEATURES

* Voice length at

- 8 KHz sampling is 32 seconds

- 6 KHz sampling is 40 seconds

* Silence compression to save memory

* Eight trigger pins,TG1 to TG8 for 32 sections

* SBT pin play-all or sequential play-all

* 15 ms debounce time suitable for CDS

* IRP interrupt pin stops playback at once

* STP stop pulse generated at end of playback

* BUSY signal for CPU control

* Two LEDs flash at 3 Hz internal

* 3.0V to 6V single power supply operation

* Low standby current (<5 mA at 3V)

* Auto-power down

* Built-in oscillator, D/A converter, EPROM

* ADPCM data compression

* Optional pop noise elimination function

* COUT pin drives speaker with a transistor

* Development tools support

* VOUT1 and VOUT2 drives buzzer directly

* Sampling rate determined by external resistor

* Holdable and unholdable triggering option

* Industrial temperature available