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CTM8B57EP 参数 Datasheet PDF下载

CTM8B57EP图片预览
型号: CTM8B57EP
PDF下载: 下载PDF文件 查看货源
内容描述: 基于EPROM的8位COMS微控制器 [EPROM-Based 8-Bit COMS Microcontroller]
分类和应用: 微控制器和处理器外围集成电路光电二极管可编程只读存储器电动程控只读存储器
文件页数/大小: 23 页 / 302 K
品牌: CERAMATE [ CERAMATE TECHNICAL ]
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CTM8B54E/55E/56E/57E
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 CTM8B54E/55E,
1Kx14 bits for CTM8B56E,
2Kx14 bits for CTM8B57E.
• Internal RAM size : 25 bytes for CTM8B54E/56E,
24 bytes for CTM8B55E,
72 bytes for CTM8B57E.
• 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
CTM8B5X 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.
CTM8B5X 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 CTM8B54E/55E, 1Kx14 bits of EPROM
for CTM8B56E, 2Kx14 bits of EPROM for
CTM8B57E 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 CTM8B55E/57E
8
PC7:PC0
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Email: server@ceramate.com.tw
Tel:886-3-3529445
Http: www.ceramate.com.tw
Page 1 of
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Rev 1.1 Dec 26,2001
Fax:886-3-3521052