|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