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參數(shù)資料
| 型號(hào)： | DS87C520-ENL |
| 英文描述： | EPROM/ROM High-Speed Micro |
| 中文描述： | 存儲(chǔ)器/ ROM的高速微 |
| 文件頁(yè)數(shù)： | 18/45頁(yè) |
| 文件大?。?/td> | 1415K |
| 代理商： | DS87C520-ENL |
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DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
18 of 45
Table 6. PMM Control and Status Bit Summary
BIT
LOCATION
FUNCTION
RESET
WRITE ACCESS
0 to 1 only when
XTUP = 1 and
XTOFF = 0
XT/
RG
EXIF.3
Control. XT/
RG
= 1, runs from crystal or external
clock; XT/
RG
= 0, runs from internal ring oscillator.
X
RGMD
EXIF.2
Status. RGMD = 1, CPU clock = ring; RGMD = 0,
CPU clock = crystal.
0
None
CD1, CD0
PMR.7,
PMR.6
Control. CD1, 0 = 01, 4 clocks; CS1, 0 = 10, PMM1;
CD1, 0 = 11, PMM2.
0, 1
Write CD1, 0 = 10
or 11 only from
CD1, 0 = 01
SWB
PMR.5
Control. SWB = 1, hardware invokes switchback to 4
clocks, SWB = 0, no hardware switchback.
Control. Disables crystal operation after ring is
selected.
Status. 1 indicates a power-fail interrupt in service
.
Status. 1 indicates high priority interrupt in service.
Status. 1 indicates low priority interrupt in service.
Status. 1 indicates that the crystal has stabilized.
Status. Serial transmission on serial port 1.
Status. Serial word reception on serial port 1.
Status. Serial transmission on serial port 0.
Status. Serial word reception on serial port 0.
0
Unrestricted
XTOFF
PMR.3
0
1 only when
XT/
RG
= 0
None
None
None
None
None
None
None
None
PIP
HIP
LIP
XTUP
SPTA1
SPRA1
SPTA0
SPRA0
STATUS.7
STATUS.6
STATUS.5
STATUS.4
STATUS.3
STATUS.2
STATUS.1
STATUS.0
0
0
0
1
0
0
0
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS87C520-MCL | EPROM/ROM High-Speed Micro |
| DS87C520-MNL | EPROM/ROM High-Speed Micro |
| DS87C520-QCL | EPROM/ROM High-Speed Micro |
| DS87C520-QNL | EPROM/ROM High-Speed Micro |
| DS87C520-WCL | EPROM/ROM High-Speed Micro |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS87C520-ENL+ | 功能描述:8位微控制器 -MCU EPROM/ROM High-Speed RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| DS87C520-FCL | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| DS87C520MCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM High-Speed Microcontrollers |
| DS87C520-MCL | 功能描述:8位微控制器 -MCU EPROM/ROM High-Speed RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
| DS87C520-MCL+ | 功能描述:8位微控制器 -MCU EPROM/ROM High-Speed RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT |
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