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参数资料
| 型号： | DS80C323-QND/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/38页 |
| 文件大小： | 0K |
| 描述： | IC MCU HI SPEED 18MHZ IND 44PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 系列： | 80C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 18MHz |
| 连通性： | EBI/EMI，SIO，UART/USART |
| 外围设备： | 电源故障复位，WDT |
| 输入/输出数： | 32 |
| 程序存储器类型： | ROMless |
| RAM 容量： | 256 x 8 |
| 电压 - 电源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振荡器型： | 外部 |
| 工作温度： | -40°C ~ 85°C |
| 封装/外壳： | 44-LCC（J 形引线） |
| 包装： | 带卷 (TR) |
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DS80C320/DS80C323 High-Speed/Low-Power Microcontrollers
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Table 1 shows the speed for each class of instruction. Note that many of the instructions have multiple op
codes. There are 255 op codes for 111 instructions. Of the 255 op codes, 159 are three times faster than
the original 80C32. While a system that emphasizes those instructions will see the most improvement, the
large total number that receive a 3 to 1 improvement assure a dramatic speed increase for any system. The
speed improvement summary is provided below.
SPEED ADVANTAGE SUMMARY
#OP CODES
SPEED
IMPROVEMENT
159
3.0 x
51
1.5 x
43
2.0 x
2
2.4 x
255
Average: 2.5
MEMORY ACCESS
The DS80C320/DS80C323 do not contain on-chip ROM and 256 bytes of scratchpad RAM. Off-chip
memory is accessed using the multiplexed address/data bus on P0 and the MSB address on P2. Figure 3
shows a typical memory connection. Timing diagrams are provided in the Electrical Specifications
section. Program memory (ROM) is accessed at a fixed rate determined by the crystal frequency and the
actual instructions. As previously mentioned, an instruction cycle requires 4 clocks. Data memory (RAM)
is accessed according to a variable-speed MOVX instruction as described below.
Figure 3. Typical Memory Connection
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相关代理商/技术参数 |
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|---|---|
| DS80C323-QNG | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C323-QNL | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C323-QNR | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C323-WCD | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C323-WCG | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
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