參數(shù)資料
型號: MTU8B57EM
廠商: Electronic Theatre Controls, Inc.
元件分類: 8位微控制器
英文描述: EPROM-Based 8-Bit CMOS Microcontroller
中文描述: 存儲器為基礎(chǔ)的8位CMOS微控制器
文件頁數(shù): 11/23頁
文件大?。?/td> 286K
代理商: MTU8B57EM
Revision 1.2
-
11 - 24 October 2000
MTU8B54E/55E/56E/57E
MYSON
TECHNOLOGY
3.6 OSCILLATOR CONFIGURATION
This device supports four oscillator modes. Users can program two configuration bits to select the appropriate
mode. These oscillator modes offered as:
RC: Low-cost crystal
XTAL: Standard crystal oscillator
HFXTAL: High frequency crystal oscillator
LFXTAL: Low frequency crystal oscillator
3.6.1 XTAL, HFXTAL or LFXTAL modes
3.6.2 RC Oscillator Mode
3.7 CONFIGURATION WORD
Bit 3
Code Protect
WDT Enable
1
0
x
x
x
x
x
x
MTU8B54E/55E/56E/57E
Internal
Circuit
SLEEP
RF
RS
XTAL
C
1
C
2
(a) Crystal Operation (or Ceramic Resonator)
OSCI
OSCO
(b) External Clock Input Operation
MTU8B54E/55E/56E/57E
OSCI
OSCO
Open
Clock from
external system
MTU8B54E/55E/56E/57E
OSCI
OSCO
0
4
÷
R
C
internal
clock
Bit2
Bit1
Oscillator Type
x
x
x
x
1
1
0
0
Bit0
Oscillator Type
x
x
x
x
1
0
1
0
Function
Remark
x
x
1
0
x
x
x
x
EPROM unprotected
EPROM protected
Watchdog Timer enable
Watchdog Timer disable
RC
HFXTAL
XTAL
LFXTAL
Default
Default
Default
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