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參數資料
型號: TS80C31X2-LLEB
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-bit CMOS Microcontroller ROMless
中文描述: 8-BIT, 30 MHz, MICROCONTROLLER, PQFP44
封裝: 1.40 MM HEIGHT, VQFP-44
文件頁數: 24/40頁
文件大?。?/td> 484K
代理商: TS80C31X2-LLEB
24
Rev. A - Mar. 19, 1999
Preliminary
TS80C31X2
6.7 ONCE Mode (ON Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using TS80C31X2 without removing the circuit from
the board. The ONCE mode is invoked by driving certain pins of the TS80C31X2; the following sequence must
be exercised:
G
Pull ALE low while the device is in reset (RST high) and PSEN is high.
G
Hold ALE low as RST is deactivated.
While the TS80C31X2 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 12. 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PDF資料
PDF描述
TS80C31X2-LLED 8-bit CMOS Microcontroller ROMless
TS80C31X2-LLER 8-bit CMOS Microcontroller ROMless
TS80C31X2-MCAB 8-bit CMOS Microcontroller ROMless
TS80C31X2-MCAD 8-bit CMOS Microcontroller ROMless
TS80C31X2-MCAR 8-bit CMOS Microcontroller ROMless
相關代理商/技術參數
參數描述
TS80C31X2-LLED 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-LLER 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-MCA 功能描述:IC MCU 8BIT 40/20MHZ 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:80C 標準包裝:9 系列:87C 核心處理器:8051 芯體尺寸:8-位 速度:40/20MHz 連通性:UART/USART 外圍設備:POR,WDT 輸入/輸出數:32 程序存儲器容量:32KB(32K x 8) 程序存儲器類型:OTP EEPROM 大小:- RAM 容量:256 x 8 電壓 - 電源 (Vcc/Vdd):4.5 V ~ 5.5 V 數據轉換器:- 振蕩器型:內部 工作溫度:0°C ~ 70°C 封裝/外殼:40-DIP(0.600",15.24mm) 包裝:管件
TS80C31X2-MCAB 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-MCAD 制造商:TEMIC 制造商全稱:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz
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