参数资料
| 型号： | TS80C31X2-MIE |
| 厂商： | Atmel |
| 文件页数： | 42/42页 |
| 文件大小： | 0K |
| 描述： | IC MCU 8BIT 40/20MHZ 44-VQFP |
| 标准包装： | 9 |
| 系列： | 80C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 40/20MHz |
| 连通性： | UART/USART |
| 外围设备： | POR |
| 输入/输出数： | 32 |
| 程序存储器类型： | ROMless |
| RAM 容量： | 128 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 内部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-QFP |
| 包装： | 托盘 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页当前第42页
9
4428E–8051–02/08
AT/TS80C31X2
7.
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 7-1).
Figure 7-1.
Use of Dual Pointer
Reset Value = XXXX XXX0
Not bit addressable
Table 7-1.
AUXR1: Auxiliary Register 1
7
6
5
4
3
2
1
0
-
-3
-
DPS
Bit
Number
Bit
Mnemonic
Description
7
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
6
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
5
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
4
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
3
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
2
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
1
-
Reserved
The value read from this bit is indeterminate. Do not set this bit.
0
DPS
Data Pointer Selection
Clear to select DPTR0.
Set to select DPTR1.
External Data Memory
AUXR1(A2H)
DPS
DPH(83H) DPL(82H)
0
7
DPTR0
DPTR1
相关PDF资料 |
PDF描述 |
|---|---|
| TS80C31X2-VCE | IC MCU 8BIT 40/30MHZ 44-VQFP |
| TS87C54X2-MIC | IC MCU 8BIT 16K OTP 40MHZ 44PQFP |
| TS80C31X2-LIC | IC MCU 8BIT 30/20MHZ 44-PQFP |
| 208209-2 | CONN RECEPT 19 POS METRIMATE |
| TS87C54X2-VCC | IC MCU 8BIT 16K OTP 40MHZ 44PQFP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| TS80C31X2-MIEB | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C31X2-MIED | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C31X2-MIER | 制造商:TEMIC 制造商全称:TEMIC Semiconductors 功能描述:8-bit CMOS Microcontroller 0-60 MHz |
| TS80C31X2-MLAB | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
| TS80C31X2-MLAD | 制造商:ATMEL 制造商全称:ATMEL Corporation 功能描述:8-bit CMOS Microcontroller ROMless |
发布紧急采购，3分钟左右您将得到回复。