Working Voltage (V) | Max.CPU Speed (MHz) | Flash (Byte) | RAM (Byte) | Direct Touch I/O | Time/Counter | Audio Output | 32K OSC. (Mask Option) ROSC | 32K OSC. (Mask Option) X'TAL | SPI/UART | WDT (S/W Option) | LVD/LVR | Sounding Processing Unit |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2.7~5.5 | 12 | 1M | 1.5K | 46 | 16-bit x2 | 14-bit Push Pull | V | V | 1/- | V | V/V | 8 Channels |
The GPT8340A, an 8-bit microprocessor developed by Generalplus, features 1M bytes Mask ROM, 1.5K bytes working RAM, 512 bytes AUX RAM, 22 I/Os, two 16-bit timers, two SPI interfaces, a 14-bit DAC with push-pull amplifier for driving speaker directly. The GPT8340A is designed to operate over a wide voltage, ranging from 2.3V through 5.5V. The Low Voltage Reset function keeps system operating properly when power drops below certain level. The GPT8340A is incorporated a high performance SPU voice engine to implement 8-channel ADPCM/PCM high quality voice and one 14-bit DAC with push-pull amplifier to drive speaker directly. Its large memory area allows user to store both program and audio data in one place. A Serial Peripheral Interface (SPI) controller is also built in GPT8340A to facilitate communication between devices. For more information about GPT8340A's feature list, please refer to the following section.
8-level (2.3V/ 2.4V/2 .6V/ 2.9V/ 3.0V/ 3.3V/ 3.6V/ 4.0V) voltage detector