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MTU429B

Myson
Part Number MTU429B
Manufacturer Myson
Description 4-Bit Micro-Controller
Published Sep 23, 2005
Detailed Description MYSON TECHNOLOGY FEATURES • • • Low power and low voltage operation. Powerful instruction set (150 instructions). Memory...
Datasheet PDF File MTU429B PDF File

MTU429B
MTU429B

Overview
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 other than the oscillator, divider and LCD driver in order to minimize the power dissipation.
The Stop function stops all the clocks in the chip.
4-Bit Micro-Controller with LCD Driver • • • • • • • • • • • • • BLOCK DIAGRAM SEG35~SEG38 SEG31~SEG34 SEG39~SEG42 SEG27~SEG30 COM1~8 .
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IOA PORT /RFC IOB PORT /EL, BZ IOC PORT /KEY IN IOD PORT /PWM SEG1~SEG26 .
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LCD DRIVER SEGMENT PLA VDD1~4 FREQUENCY GENERATOR TABLE ROM 256 X 8 INDEX SRAM 256 X 4 ALU SRAM 128 X 4 CUP1 CUP2 CU...


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