MTU8B54EN View Datasheet(PDF) - Myson Century Inc
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Description
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MTU8B54EN Datasheet PDF : 23 Pages
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MYSON
MTU8B54E/55E/56E/57E
TECHNOLOGY
EPROM-Based 8-Bit CMOS Microcontroller
FEATURES
• Total of 33 single word instructions .
• The fast execution time may be 200ns for all single
cycle instructions under 20MHz operating.
• Operating voltage range: 2.3V ~ 6.5V
• 8-bit data bus.
• 14-bit instruction word.
• Four-level stacks.
• On chip EPROM size : 512x14 bits for MTU8B54E/55E,
1Kx14 bits for MTU8B56E,
2Kx14 bits for MTU8B57E.
• Internal RAM size : 25 bytes for MTU8B54E/56E,
24 bytes for MTU8B55E,
•
72 bytes for MTU8B57E.
• Direct and indirect addressing modes for data accessing
• 8-bit real time clock/counter with 8-bit programmable
prescaler.
• Internal power-on Reset.
• Device Reset Timer.
• Code protection.
• Sleep mode for power saving.
• On chip Watchdog Timer(WDT) based on internal RC
oscillator.
• Three I/O ports PA, PB nad PC with independent direc-
tion control.
• 4 types of oscillator can be selected by code options:
- RC : Low-cost RC oscillator
- XTAL : Standard crystal oscillator
- HFXTAL : High frequency crystal oscillator
- LFXTAL : Low frequency crystal oscillator
GENERAL DESCRIPTION
MTU8B5X series is an EPROM based 8-bit micro-
controller which employs a full CMOS technology
enhanced with low-cost, high speed and high noise
immunity. Watchdog Timer, RAM, EPROM, tri-state
I/O port, power down mode, and real time program-
mable clock/counter are integrated into this chip.
MTU8B5X contains 33 instructions, all are single
cycle except for program branches which take two
cycles.
On chip memory is available with 512x14 bits of
EPROM for MTU8B54E/55E, 1Kx14 bits of EPROM
for MTU8B56E, 2Kx14 bits of EPROM for
MTU8B57E and 24 to 72 bytes of static RAM.
BLOCK DIAGRAM
Vdd
Configuration
Vss
Word
2OsSceMleoctde
OSCI
OSCO
MCLR
Sleep
Oscillator
Circuit
Four-level
11
Stack
WatchDog
Timer
T0CKI
WDT/Timer0
Prescaler
6
WDT
Time Out
Timer0
T0MODE
Register
6
8
RAM
24, 25 or 27 Bytes
Accumulator
FSR
Program
Counter
11
EPROM
512 X 14 TO
2048 X 14
14
Instruction
Register
14
Instruction
Decoder
PortA
PortB
4
PA3:PA0
8
PB7:PB0
Status
ALU
PortC
8
PC7:PC0
Only in MTU8B55E/57E
8
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.
Revision 1.2
-1 -
24 October 2000
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