參數資料
型號: TS80C31X2-LLBD
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: GT 24C 24#16 PIN PLUG
中文描述: 8-BIT, 30 MHz, MICROCONTROLLER, PQCC44
封裝: PLASTIC, LCC-44
文件頁數: 24/40頁
文件大小: 484K
代理商: TS80C31X2-LLBD
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-LLBR GT 24C 24#16 SKT PLUG
TS80C31X2-LLCB 8-bit CMOS Microcontroller ROMless
TS80C31X2-LLCD 8-bit CMOS Microcontroller ROMless
TS80C31X2-LLCR 8-bit CMOS Microcontroller ROMless
TS80C31X2-LLEB 8-bit CMOS Microcontroller ROMless
相關代理商/技術參數
參數描述
TS80C31X2-LLBR 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-LLCB 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-LLCD 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-LLCR 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless
TS80C31X2-LLEB 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless