参数资料
型号: TS80C32X2-VCBB
厂商: ATMEL CORP
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 40 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, LCC-44
文件页数: 2/56页
文件大小: 790K
代理商: TS80C32X2-VCBB
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
相关PDF资料
PDF描述
TS87C52X2-VICR 8-BIT, OTPROM, 40 MHz, MICROCONTROLLER, PQFP44
TS80C32X2-LCBR 8-BIT, 30 MHz, MICROCONTROLLER, PQCC44
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