The N539TP340 is an OTP version of ViewTalk^® family. It inherits from N539T000 (ICE chip) and could be configured to different set of features and matches to different mask-rom versions. The features are mainly an 8-bit 6502 CPU, a high sound quality speech and wavetable melody synthesizer, and a 2000-dot LCD driver unit. Also provided are a charge pump circuit, two pages of dedicated LCD RAM, and a 4-level grey scale LCD display to provide good quality, sharp pictures. The N539TP340 can synthesize 8-channel speech and/ or wavetable melody, while simultaneously display LCD. It offers multiple power modes to minimize power dissipation according to applications of different uses of speech, melody, and LCD display. The Serial Interface Manager (SIM) is designated for cartridge applications. Using the SIM, the N539TP340 can access Nuvoton-proprietary, serial-memory chips W55FXX and W551CXXX.