參數資料
型號: TS87C52X2-VICR
廠商: ATMEL CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP44
封裝: PLASTIC, QFP-44
文件頁數: 2/56頁
文件大小: 790K
代理商: TS87C52X2-VICR
10
Rev.D - 16 November, 2000
TS80C32X2
TS87C52X2
TS80C52X2
6.2 Dual Data Pointer Register Ddptr
The additional data pointer can be used to speed up code execution and reduce code size in a number of
ways.
The dual DPTR structure is a way by which the chip will specify the address of an external data memory
location. There are two 16-bit DPTR registers that address the external memory, and a single bit called
DPS = AUXR1/bit0 (See Table 5.) that allows the program code to switch between them (Refer to Figure 3).
Figure 3. Use of Dual Pointer
External Data Memory
AUXR1(A2H)
DPS
DPH(83H) DPL(82H)
0
7
DPTR0
DPTR1
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相關代理商/技術參數
參數描述
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