Description

[ Sunplus Technology Co., Ltd. ]

The SPC2054FOA is a CPU based two-channel speech/melody synthesizer. It features a CMOS 8-bit microprocessor with 69 instructions, 20K-byte ROM for speech and melody data, and a 64-byte working SRAM. The speech is compressed by a 4-bit ADPCM with approximately 6 seconds of speech duration at a 7KHz sampling rate. The synthesizer includes two Timer/Counters, 10 Software Selectable I/Os, and one 8-bit current D/A output. It operates over a wide voltage range of 2.4V - 5.5V and includes a Low Voltage Reset function. Additionally, the SPC2054FOA has a Clock Stop mode for power savings.

Specifications and features

■ 8-bit microprocessor
■ Provides 20K-byte ROM for program and audio data
■ 64-byte working SRAM
■ Software-based audio processing
■ Wide operating voltage: 2.4V – 3.4V @ 4.0MHz, 3.6V – 5.5V @ 6.0MHz
■ Supports Rosc only
■ Max. CPU clock: 4.0MHz @ 3V, 6.0MHz @ 5V
■ Standby mode (Clock Stop mode) for power savings. Max. 2A @ 5V
■ 500ns instruction cycle time @ 4.0MHz CPU clock
■ Provides 10 general I/Os
■ Two 12-bit timer/counters
■ 6 INT sources
■ Key wakeup function
■ Approx. 6 seconds speech duration @ 7KHz sampling rate with ADPCM
■ One D/A output
■ Low Voltage Reset

Application Scenarios

■ Intelligent education toys: Ex. Pattern to voice (animal, car, color, etc.), Spelling (English or Chinese), Math
■ High-end toy controller
■ Talking instrument controller
■ General speech synthesizer
■ Industrial controller

Comparison

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