參數資料
型號: DS80C320-QNL
廠商: Maxim Integrated Products
文件頁數: 11/38頁
文件大小: 0K
描述: IC MCU HI SPEED 33MHZ IND 44PLCC
產品培訓模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝: 26
系列: 80C
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,SIO,UART/USART
外圍設備: 電源故障復位,WDT
輸入/輸出數: 32
程序存儲器類型: ROMless
RAM 容量: 256 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
19 of 38
Figure 4. Ring Oscillator Startup
TIMED ACCESS PROTECTION
Selected SFR bits are critical to operation, making it desirable to protect against an accidental write
operation. The Timed Access procedure prevents an errant CPU from accidentally altering a bit that
would cause difficulty. The Timed Access procedure requires that the write of a protected bit be preceded
by the following instructions:
MOV
0C7h, #0AAh
MOV
0C7h, #55h
By writing an AAh followed by a 55h to the Timed Access register (location C7h), the hardware opens a
three-cycle window that allows software to modify one of the protected bits. If the instruction that seeks
to modify the protected bit is not immediately proceeded by these instructions, the write will not take
effect. The protected bits are:
EXIF.0
BGS Bandgap Select
WDCON.6
POR Power-on Reset flag
WDCON.1
EWT Enable Watchdog
WDCON.0
RWT Reset Watchdog
WDCON.3
WDIF Watchdog Interrupt Flag
DIAGRAM ASSUMES THAT THE OPERATION FOLLOWING STOP REQUIRES LESS THAN 18ms COMPLETE.
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相關代理商/技術參數
參數描述
DS80C320-QNL/T&R 制造商:Maxim Integrated Products 功能描述:H.S. MICRO 44PLCC 33MHZ IND T&R - Tape and Reel 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:IC MCU HI SPEED 33MHZ IND 44PLCC
DS80C320-QNL/T&R 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 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
DS80C320-QNL+ 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 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT
DS80C320-QNL+T&R 制造商:Maxim Integrated Products 功能描述:MCU 8BIT CISC ROMLESS 5V 44PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC MCU 33MHZ HS/LP 44-PLCC
DS80C320-QNL+T&R 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 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT