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參數(shù)資料
| 型號： | DS80C320MNG |
| 英文描述： | (434.89 k) |
| 中文描述： | （434.89十一） |
| 文件頁數(shù)： | 16/38頁 |
| 文件大?。?/td> | 434K |
| 代理商： | DS80C320MNG |
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DS80C320/DS80C323
110196 16/38
RING OSCILLATOR START–UP
Figure 4
CRYSTAL
POWER
CRYSTAL
RING
POWER
4–10 ms
uC ENTERS
CINTERRUPT;
CLOCK
uC ENTERS
uC ENTERS
INTERRUPT;
uC ENTERS
STOP MODE WITH RING STARTUP
uC OPERATING
uC OPERATING
STOP MODE WITHOUT RING STARTUP
Diagram assumes that the operation following Stop requires less than 18 ms complete.
TIMED ACCESS PROTECTION
Selected SFR bits are critical to operation, making it
desirable to protect against an accidental write opera-
tion. The Timed Access procedure prevents an errant
cpu from accidentally altering a bit that would cause diffi-
culty. The Timed Access procedure requires that the
write of a protected bit be preceded by the following
instructions :
MOV
MOV
0C7h, #0AAh
0C7h, #55h
By writing an AAh followed by a 55h to the Timed Access
register (location C7h), the hardware opens a two cycle
window that allows software to modify one of the pro-
tected bits. If the instruction that seeks to modify the pro-
tected bit is not immediately proceeded by these
instructions, the write will not take effect. The protected
bits are:
EXIF.0
WDCON.6
WDCON.1
WDCON.0
WDCON.3
BGS Band–gap Select
POR Power–on Reset flag
EWT Enable Watchdog
RWT Reset Watchdog
WDIF Watchdog Interrupt Flag
SPECIAL FUNCTION REGISTERS
Most special features of the DS80C320/DS80C323 or
80C32 are controlled by bits in special function registers
(SFRs). This allows the device to add many features but
use the same instruction set. When writing software to
use a new feature, the SFR must be defined to an
assembler or compiler using an equate statement. This
is the only change needed to access the new function.
The DS80C320/DS80C323 duplicates the SFRs that
are contained in the standard 80C32. Table 6 shows the
register addresses and bit locations. Many are standard
80C32 registers. The High–Speed Microcontroller
User’s Guide describes all SFRs.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS80C323ENG | Microprocessor |
| DS80C323MCG | Microprocessor |
| DS80C323QCG | Microprocessor |
| DS80C390 | Dual CAN High-Speed Microprocessor |
| DS80C390-QNR | Dual CAN High-Speed Microprocessor |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS80C320-MNG | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| DS80C320-MNG+ | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| DS80C320-MNL | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| DS80C320-MNL+ | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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 最大時鐘頻率:50 MHz 程序存儲器大小: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 |
| DS80C320-MNR | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
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