MTU419B 데이터 시트보기 (PDF) - Myson Century Inc
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MTU419B Datasheet PDF : 18 Pages
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MYSON
TECHNOLOGY
MTU419B
(Preliminary)
4-bit Microcontroller with LCD Driver
FEATURES
• Low power and low voltage operation.
• Powerful instruction set (135 instructions).
• Memory capacity.
- Instruction ROM capacity 2048 x 16 bits.
- Index ROM capacity
256 x 8 bits.
- Internal RAM capacity 128 x 4 bits.
• Input/output ports.
- Port IOC 4 pins.
- Buzzer output.
- INT.
• 8-level subroutine nesting.
• Built-in LCD/LED driver, 4 x 33 = 132 segments.
• Built-in EL driver, frequency or melody generator
• Built-in Resistance-to-Frequency Converter.
• Built-in key strobe function.
• Built-in voltage doubler, halver, tripler charge
pump circuit.
• Two 6-bit programmable timers with programma-
ble clock source.
• Watchdog timer.
• 3 external & 5 internal interrupt resources.
• Dual clock operation.
• HALT and STOP function.
GENERAL DESCRIPTION
The MTU419B is an embedded high-performance
4-bit microcomputer with 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, alarm, EL-light, LCD
driver, look-up table and watchdog timer. The
instruction set consists of 135 instructions which
include nibble operation, manipulation various condi-
tional branch instructions and LCD data transfer
instructions which are powerful and easy to follow.
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.
BLOCK DIAGRAM
IOC 1~4
KEY SCAN
INPUT
SEG 31~33
RFC
SEG 29~30
EL-LIGHT
SEG 1~12
KEY SCAN
OUTPUT
COM1~4
SEG1~33
........
LCD DRIVER
VDD1~3
SEGMENT PLA
FREQUENCY
GENERATOR
4 BITS DATA BUS
INDEX MASK
ROM
256 X 8 BITS
DATA SRAM
ALU
(INDEX (L))
128 X 4 BITS
CUP1
CUP2
PREDIVIDER
6-BITS PRESET
TIMERX 2
8 LEVELS STACK
INSTRUCTION
DECODER
WATCHDOG
TIMER
OSCILLATOR
XTOUT CFOUT
XTIN CFIN
CONTROL
CIRCUIT
PRESET
INT
11-BIT PROGRAM
COUNTER
MASK ROM
2048 X 16 BITS
This datasheet contains new product information. Myson Technology reserves the rights to modify the product specification without
notice. No liability is assumed as a result of the use of this procuts. No rights under any patent accompany the sales of the product.
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MTU419B Revision 3.0 28/Oct/1999
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