- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄365959 > TS80C31X2-ECCR (Atmel Corp.) 8-bit CMOS Microcontroller ROMless PDF資料下載
參數(shù)資料
| 型號(hào)： | TS80C31X2-ECCR |
| 廠商： | Atmel Corp. |
| 英文描述： | 8-bit CMOS Microcontroller ROMless |
| 中文描述： | 8位CMOS微控制器無(wú)ROM |
| 文件頁(yè)數(shù)： | 24/40頁(yè) |
| 文件大?。?/td> | 484K |
| 代理商： | TS80C31X2-ECCR |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)當(dāng)前第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)
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(guān)PDF資料 |
PDF描述 |
|---|---|
| TS80C31X2-ECEB | 8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ECED | 8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ECER | 8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ELAB | 8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ELAD | 8-bit CMOS Microcontroller ROMless |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TS80C31X2-ECEB | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ECED | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ECER | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ELAB | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
| TS80C31X2-ELAD | 制造商:ATMEL 制造商全稱(chēng):ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。