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MTU8B57EP Datasheet

  • MTU8B57EP

  • EPROM-Based 8-Bit CMOS Microcontroller

  • 23頁(yè)

  • ETC

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MYSON
TECHNOLOGY
FEATURES
鈥?Total of 33 single word instructions .
鈥?The fast execution time may be 200ns for all single
cycle instructions under 20MHz operating.
鈥?Operating voltage range: 2.3V ~ 6.5V
鈥?8-bit data bus.
鈥?14-bit instruction word.
鈥?Four-level stacks.
鈥?On chip EPROM size : 512x14 bits for MTU8B54E/55E,
1Kx14 bits for MTU8B56E,
2Kx14 bits for MTU8B57E.
鈥?Internal RAM size : 25 bytes for MTU8B54E/56E,
24 bytes for MTU8B55E,
鈥?/div>
72 bytes for MTU8B57E.
鈥?Direct and indirect addressing modes for data accessing
鈥?8-bit real time clock/counter with 8-bit programmable
prescaler.
鈥?Internal power-on Reset.
鈥?Device Reset Timer.
鈥?Code protection.
鈥?Sleep mode for power saving.
鈥?On chip Watchdog Timer(WDT) based on internal RC
oscillator.
鈥?Three I/O ports PA, PB nad PC with independent direc-
tion control.
MTU8B54E/55E/56E/57E
EPROM-Based 8-Bit CMOS Microcontroller
鈥?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
V
dd
V
ss
Configuration
Word
Osc Mode
2 Select
Four-level
Stack
11
Program
Counter
11
Enable
/Disable
OSCI
OSCO
MCLR
Sleep
WatchDog
Timer
Oscillator
Circuit
EPROM
512 X 14 TO
2048 X 14
14
Instruction
Register
T0CKI
WDT/Timer0
Prescaler
6
WDT
Time Out
14
Timer0
Data
Instruction
Decoder
4
T0MODE
Register
6
8
RAM
24, 25 or 27 Bytes
PortA
PA3:PA0
Accumulator
FSR
PortB
8
PB7:PB0
PortC
Status
ALU
8
Only in MTU8B55E/57E
8
PC7:PC0
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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