RC8650 datasheet(2/48 Pages) ETC

2 / 48 page

RC8650 VOICE SYNTHESIZER

RC SYSTEMS

FEATURES

• Integrated text-to-speech processor:

– High voice quality, unlimited vocabulary

– Converts any ASCII text into speech automatically

– Capable of very high reading rates

– Add/modify messages by simply editing a text ﬁle

– On-the-ﬂy control of speed, pitch, volume, etc.

• Playback of sound ﬁles:

– Real-time PCM and ADPCM

– Prerecorded on chip, up to 15 minutes

• Tone generation:

– Three voice musical

– Dual sinusoidal

– DTMF (Touch-Tone) dialer

• On-chip A/D converter:

– Four channels, 8-bit resolution

– One-shot, continuous, single sweep, and

continuous sweep modes of operation

– Software and hardware triggering

– Support for external op amp

• Analog and digital audio outputs

• Stop, pause, and resume controls

• Serial and bus interfaces

• User programmable greeting and default settings

• Flexible user exception dictionary:

– Change the pronunciation of any input string based on

spelling and context

– Convert encrypted data into meaningful messages

– Trigger tone generation, recorded message playback,

voice parameter changes

• In-circuit, ﬁeld programmable

• 2 KB input buffer for virtually no-overhead operation

• Available in 3.3 V and 5 V versions

• Low power (typ @ 3.3 V):

– 8.8 mA active

– 700 µA idle

– 2 µA standby

APPLICATIONS

• Robotics

• Talking OCR systems

• ATM machines

• Talking pagers and PDAs

• GPS navigation systems

• Vending and ticketing machines

• Remote diagnostic reporting

• Dial-up information systems

• Handheld barcode readers

• Electronic test and measurement

• Security systems

• Aids for the orally or visually disabled

• Meeting federal ADA requirements

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RC8650 Product Summary

* Based on 8 kHz sampling rate with ADPCM encoding

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