MTU429B

MYSON TECHNOLOGY FEATURES Low power and low voltage operation. Powerful instruction set (150 instructions). Memory capacity. - Instruction ROM capacity 4096 x 16 bits. - Index ROM capacity 256 x 8 bits. - Internal RAM capacity 384 or 256 x 4 bits. Input/Output ports of up to 20 pins. 8-level subroutine nesting. Built-in LCD driver, 8 x 42 = 336 segments. Built-in EL driver, frequency or melody generator. Built-in Resistance-to-Frequency Converter. Built-in 2-channel 6/8-bit PWM output. Built-in key strobe function.(Shared with segment pin) Built-in voltage doubler, halver, tripler quadrupler charge pump circuit. Two 6-bit programmable timers with programmable clock source. Watchdog timer. 4 external & 3 internal interrupt resources. - External: INT, RFC, IOA/IOC/S port, keystrobe. - Internal: TM1, TM2, Predivider. Dual clock operation. HALT and STOP function. MTU429B (Preliminary) GENERAL DESCRIPTION The MTU429B is an embedded high performance 4-bit microcomputer with an on-chip LCD driver. It contains all the necessary functions in a single chip: 4-bit parallel processing ALU, ROM, RAM, I/O ports, timer, clock generator, dual clock, RFC, EL-light, LCD driver, look-up table, watchdog timer and keyboard scanning. The instruction set includes not only 4-bit operation and manipulation instructions but also various conditional branch instructions and LCD driver data transfer instructions which are powerful and easy to use. The Halt function stops any internal operations ot...