參數(shù)資料
型號(hào): TS80C51RA2-LCAD
廠商: ATMEL CORP
元件分類(lèi): 微控制器/微處理器
英文描述: High Performance 8-bit Microcontrollers
中文描述: 8-BIT, 30 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁(yè)數(shù): 48/74頁(yè)
文件大小: 903K
代理商: TS80C51RA2-LCAD
48
Rev. C - 06 March, 2001
TS80C51RA2/RD2
TS83C51RB2/RC2/RD2
TS87C51RB2/RC2/RD2
6.11. ONCE
TM
Mode (ON Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using TS80C51Rx2 without removing the circuit
from the board. The ONCE mode is invoked by driving certain pins of the TS80C51Rx2; the following sequence
must be exercised:
Pull ALE low while the device is in reset (RST high) and PSEN is high.
Hold ALE low as RST is deactivated.
While the TS80C51Rx2 is in ONCE mode, an emulator or test CPU can be used to drive the circuit Table 26.
shows the status of the port pins during ONCE mode.
Normal operation is restored when normal reset is applied.
Table 25. External Pin Status during ONCE Mode
ALE
PSEN
Port 0
Port 1
Port 2
Port 3
XTAL1/2
Weak pull-up
Weak pull-up
Float
Weak pull-up
Weak pull-up
Weak pull-up
Active
相關(guān)PDF資料
PDF描述
TS80C51RA2-LCAR High Performance 8-bit Microcontrollers
TS80C51RA2-LCBB High Performance 8-bit Microcontrollers
TS80C51RA2-LCBD High Performance 8-bit Microcontrollers
TS80C51RA2-LCBR GT 35C 35#12 PIN PLUG
TS80C51RA2-LIED High Performance 8-bit Microcontrollers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TS80C51RA2-LCAR 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers
TS80C51RA2-LCB 功能描述:IC MCU 8BIT 256BYTE 30MHZ 44PLCC RoHS:否 類(lèi)別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:80C 標(biāo)準(zhǔn)包裝:1,500 系列:AVR® ATtiny 核心處理器:AVR 芯體尺寸:8-位 速度:16MHz 連通性:I²C,LIN,SPI,UART/USART,USI 外圍設(shè)備:欠壓檢測(cè)/復(fù)位,POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):16 程序存儲(chǔ)器容量:8KB(4K x 16) 程序存儲(chǔ)器類(lèi)型:閃存 EEPROM 大小:512 x 8 RAM 容量:512 x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 11x10b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:20-SOIC(0.295",7.50mm 寬) 包裝:帶卷 (TR)
TS80C51RA2-LCBB 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers
TS80C51RA2-LCBD 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers
TS80C51RA2-LCBR 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:High Performance 8-bit Microcontrollers