- 您現在的位置：買賣IC網 > PDF目錄385303 > GMS87C2020K (HYNIX SEMICONDUCTOR INC) HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS PDF資料下載
參數資料
| 型號： | GMS87C2020K |
| 廠商： | HYNIX SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 8-BIT, OTPROM, 8 MHz, MICROCONTROLLER, PDIP64 |
| 封裝： | SDIP-64 |
| 文件頁數： | 88/107頁 |
| 文件大小： | 1482K |
| 代理商： | GMS87C2020K |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁當前第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁
HMS81C2012A/2020A
84
SEP. 2004 Ver 2.00
20. POWER FAIL PROCESSOR
The HMS81C20xxA has an on-chip power fail detection
circuitry to immunize against power noise. A configura-
tion 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 according to PFDM bit of PFDR. Re-
fer to “7.4 DC Electrical Characteristics for Standard
Pins(5V)” on page 16.
In the in-circuit emulator, power fail function is not imple-
mented and user can not experiment with it. Therefore, af-
ter final development of user program, this function may
be experimented or evaluated.
Note:
User can select power fail voltage level according to
PFD0, PFD1 bit of CONFIG register(703F
H
) at the OTP
(HMS87C20xxA) but
must select
the power fail voltage
level to define PFD option of “Mask Order & Verification
Sheet” at the mask chip(HMS81C20xxA).
Because the power fail voltage level of mask chip
(HMS81C20xxA) is determined according to mask option.
Note:
If power fail voltage is selected to 3.0V on 3V oper-
ation, MCU is freezed at all the times.
Table 20-1 Power fail processor
.
Figure 20-1 Power Fail Voltage Detector Register
Power FailFunction
OTP
MASK
Enable/Disable
PFDIS flag
PFDIS flag
Level Selection
PFS0 bit
PFS1 bit
Mask option
PFDM
7
6
5
4
3
2
1
0
PFS
INITIAL VALUE: ---- -100
B
ADDRESS: 0EF
H
PFDR
R/W
R/W
R/W
PFDIS
Operation Mode
0 : Normal operation regardless of power fail
1 : MCU will be reset by power fail detection
Disable Flag
0: Power fail detection enable
1: Power fail detection disable
Power Fail Status
0: Normal operate
1: Set to “1” if power fail is detected
相關PDF資料 |
PDF描述 |
|---|---|
| GMS87C2020LQ | MEMORY CARD COMPACTFLASH 128MB |
| GMS87C2020Q | HYUNDAI MICRO ELECTRONICS 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| GNR60S201JR | Catalog number system |
| GNR40B201J4 | Catalog number system |
| GNR40B201JA | Catalog number system |
相關代理商/技術參數 |
參數描述 |
|---|---|
| GMS87C2020LQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| GMS87C2020Q | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:CMOS Single-Chip 8-Bit Microcontroller with A/D Converter & VFD Driver |
| GMS87C2120 | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| GMS87C2120K | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS |
| GMS87C2120Q | 制造商:HYNIX 制造商全稱:Hynix Semiconductor 功能描述:HYNIX SEMICONDUCTOR 8-BIT SINGLE-CHIP MICROCONTROLLERS |
發(fā)布緊急采購，3分鐘左右您將得到回復。