參數(shù)資料
型號： TS83C51RD2-MIE
廠商： International Rectifier
英文描述： High Performance 8-bit Microcontroller
中文描述： 高性能8位微控制器
文件頁數(shù)： 48/85頁
文件大?。?/td> 762K
代理商： TS83C51RD2-MIE
48
4188E–8051–08/06
AT/TS8xC51Rx2
6.9
ONCE
TM
Mode (ON Chip Emulation)
The ONCE mode facilitates testing and debugging of systems using TS8xC51Rx2 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 cir-
cuit Table 26. shows the status of the port pins during ONCE mode.
Normal operation is restored when normal reset is applied.
Table 6-23.
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
TS83C51RD2-VCA High Performance 8-bit Microcontroller
TS83C51RD2-VCB High Performance 8-bit Microcontroller
TS83C51RD2-VCE High Performance 8-bit Microcontroller
TS83C51RD2-VIA High Performance 8-bit Microcontroller
TS83C51RD2-VIB High Performance 8-bit Microcontroller
相關代理商/技術參數(shù)
參數(shù)描述
TS83C51RD2-MIL 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontroller
TS83C51RD2-MILR 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TS83C51RD2-MIM 制造商:ATMEL 制造商全稱:ATMEL Corporation 功能描述:High Performance 8-bit Microcontroller
TS83C51RD2-MIMB 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
TS83C51RD2-MIMD 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
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