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参数资料
| 型号： | DS87C520-WCL |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | Microcontroller |
| 英文描述： | 8-BIT, UVPROM, 33 MHz, MICROCONTROLLER, CDIP40 |
| 封装： | LEAD FREE, WINDOWED, CERDIP-40 |
| 文件页数： | 10/43页 |
| 文件大小： | 709K |
| 代理商： | DS87C520-WCL |
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DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
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Table 6. PMM Control and Status Bit Summary
BIT
LOCATION
FUNCTION
RESET
WRITE ACCESS
XT/
RG
EXIF.3
Control. XT/
RG = 1, runs from crystal or external
clock; XT/
RG = 0, runs from internal ring oscillator.
X
0 to 1 only when
XTUP = 1 and
XTOFF = 0
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.
0
Unrestricted
XTOFF
PMR.3
Control. Disables crystal operation after ring is
selected.
0
1 only when
XT/
RG = 0
PIP
STATUS.7
Status. 1 indicates a power-fail interrupt in service.
0
None
HIP
STATUS.6
Status. 1 indicates high priority interrupt in service.
0
None
LIP
STATUS.5
Status. 1 indicates low priority interrupt in service.
0
None
XTUP
STATUS.4
Status. 1 indicates that the crystal has stabilized.
1
None
SPTA1
STATUS.3
Status. Serial transmission on serial port 1.
0
None
SPRA1
STATUS.2
Status. Serial word reception on serial port 1.
0
None
SPTA0
STATUS.1
Status. Serial transmission on serial port 0.
0
None
SPRA0
STATUS.0
Status. Serial word reception on serial port 0.
0
None
相关PDF资料 |
PDF描述 |
|---|---|
| DS87C530-ENL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP52 |
| DS87C530-QCL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC52 |
| DS83C530-ECL | 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP52 |
| DS83C530-QNL | 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQCC52 |
| DS87C530-QNL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC52 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS87C530 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM MICRO WITH REAL TIME CLOCK |
| DS87C530_05 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS87C530_1 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Micro with Real Time Clock |
| DS87C530+ECL | 制造商:Maxim Integrated Products 功能描述:MICRO OTP RTC 33MHZ 52P TQFP PB-FRR - Trays |
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