The GPRT5507A integrates an 8-bit CPU, speech generator, segment LED driver, analog switches, programmable attenuator and a gain amplifier into one chip. The GPRT5507A includes a 40K-byte ROM, 128-byte working SRAM, 4 edge-mode interrupts and a fixed time based generator (FCPU/1024)*. This chip which incorporated with 1 or 2 pieces of 4M X 4 ARAM, can be applied to the versatile audio field, such as a language repeater.

• 8-bit microprocessor
• Provide 40K x 8 ROM area for program and audio data
• 128 x 8 working SRAM
• Embedded LPF, ADC, DAC for analog processing
• Provide controlled DRAM interfaces
• 4 Interrupt sources
• Built in watch dog timer
• ROSC. or Crystal OSC. selections
• Provide low battery detector
• Provide power down mode