參數資料
型號: MC80C0216Q
廠商: Electronic Theatre Controls, Inc.
元件分類: 8位微控制器
英文描述: 8-BIT SINGLE-CHIP MICROCONTROLLERS
中文描述: 8位單晶片微控制器
文件頁數: 109/128頁
文件大?。?/td> 1408K
代理商: MC80C0216Q
Preliminary
MC80F0208/16/24
MAR. 2005 Ver 0.2
105
24. POWER FAIL PROCESSOR
The MC80F0208/16/24 has an on-chip power fail detection cir-
cuitry to immunize against power noise. A configuration register,
PFDR, can enable or disable the power fail detect circuitry.
Whenever V
DD
falls close to or below power fail voltage for
100ns, the power fail situation may reset or freeze MCU accord-
ing to PFDM bit of PFDR. Refer to “Figure 24-1 Power Fail Volt-
age Detector Register” on page 105.
In the in-circuit emulator, power fail function is not implemented
and user can not experiment with it. Therefore, after final devel-
opment of user program, this function may be experimented or
evaluated.
Note:
User can select power fail voltage level according to
PFS0, PFS1 bit of CONFIG register(703FH) at the FLASH
(MC80F0208/16/24) but must select the power fail voltage
level to define PFD option of "Mask Order & Verification
Sheet" at the mask chip(MC80C0208/16/24), because the
power fail voltage level of mask chip (MC80C0208/16/24) is
determined according to mask option.
Note:
If power fail voltage is selected to 2.4V or 2.7V on
below 3V operation, MCU is freezed at all the times.
Table 24-1 Power fail processor
Figure 24-1 Power Fail Voltage Detector Register
Power Fail Function
FLASH
MASK
Enable/Disable
PFDEN flag
PFDEN flag
Level Selection
PFS0 bit
PFS1 bit
Mask option
PFDM
7
-
6
-
5
-
4
-
3
-
2
1
0
PFDS
INITIAL VALUE: ---- -000
B
ADDRESS: 0F7
H
PFDR
R/W
R/W
R/W
PFDEN
PFD Operation Mode
0 : MCU will be frozen by power fail detection
1 : MCU will be reset by power fail detection
PFD Enable Bit
0: Power fail detection disable
1: Power fail detection enable
Power Fail Status
0: Normal operate
1: Set to “1” if power fail is detected
* Cautions :
Be sure to set bits 3 through 7 to “0”.
相關PDF資料
PDF描述
MC80C0224 8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80C0224K 8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80C0224Q 8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80F0208K 8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80F0208Q 8-BIT SINGLE-CHIP MICROCONTROLLERS
相關代理商/技術參數
參數描述
MC80C0224 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80C0224K 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80C0224Q 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80C0424 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS
MC80C0424K 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-BIT SINGLE-CHIP MICROCONTROLLERS