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参数资料
| 型号： | DS87C530-ENL |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 43/45页 |
| 文件大小： | 0K |
| 描述： | IC MCU EPR/ROM W/RTC 33MZ 52TQFP |
| 标准包装： | 96 |
| 系列： | 87C |
| 核心处理器： | 8051 |
| 芯体尺寸： | 8-位 |
| 速度： | 33MHz |
| 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 |
| 程序存储器容量： | 16KB（16K x 8） |
| 程序存储器类型： | OTP |
| RAM 容量： | 1K 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： | 52-TQFP |
| 包装： | 托盘 |
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DS87C530/DS83C530 EPROM/ROM Microcontrollers with Real-Time Clock
7 of 45
COMPATIBILITY
The DS87C530/DS83C530 are fully static, CMOS 8051-compatible microcontrollers designed for high
performance. While remaining familiar to 8051 users, the devices have many new features. In general,
software
written
for
existing
8051-based
systems
works
without
modification
on
the
DS87C530/DS83C530. The exception is critical timing since the high-speed microcontrollers perform its
instructions much faster than the original for any given crystal selection. The DS87C530/DS83C530 run
the standard 8051 instruction set. They are not pin compatible with other 8051s due to the timekeeping
crystal.
The DS87C530/DS83C530 provide three 16-bit timer/counters, full-duplex serial port (2), 256 bytes of
direct RAM plus 1kB of extra MOVX RAM. I/O ports have the same operation as a standard 8051
product. Timers will default to a 12 clock-per-cycle operation to keep their timing compatible with
original 8051 systems. However, timers are individually programmable to run at the new 4 clocks per
cycle if desired. The PCA is not supported.
The DS87C530/DS83C530 provide several new hardware features implemented by new Special Function
Registers. A summary of these SFRs is provided below.
PERFORMANCE OVERVIEW
The DS87C530/DS83C530 feature a high-speed, 8051-compatible core. Higher speed comes not just
from increasing the clock frequency, but also from a newer, more efficient design.
This updated core does not have the dummy memory cycles that are present in a standard 8051. A
conventional 8051 generates machine cycles using the clock frequency divided by 12. In the
DS87C530/DS83C530, the same machine cycle takes 4 clocks. Thus the fastest instruction, one machine
cycle, executes three times faster for the same crystal frequency. Note that these are identical instructions.
The majority of instructions on the DS87C530/DS83C530 will see the full 3-to-1 speed improvement.
Some instructions will get between 1.5 and 2.4 to 1 improvement. All instructions are faster than the
original 8051.
The numerical average of all opcodes gives approximately a 2.5 to 1 speed improvement. Improvement of
individual programs will depend on the actual instructions used. Speed-sensitive applications would make
the most use of instructions that are three times faster. However, the sheer number of 3 to 1 improved
opcodes makes dramatic speed improvements likely for any code. These architecture improvements
produce a peak instruction cycle in 121ns (8.25 MIPs). The Dual Data Pointer feature also allows the user
to eliminate wasted instructions when moving blocks of memory.
INSTRUCTION SET SUMMARY
All instructions perform the same functions as their 8051 counterparts. Their effect on bits, flags, and
other status functions is identical. However, the timing of each instruction is different. This applies both
in absolute and relative number of clocks.
For absolute timing of real-time events, the timing of software loops can be calculated using a table in the
High-Speed Microcontroller User’s Guide. However, counter/timers default to run at the older 12 clocks
per increment. In this way, timer-based events occur at the standard intervals with software executing at
higher speed. Timers optionally can run at 4 clocks per increment to take advantage of faster processor
operation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS87C530-ENL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS87C530-KCL | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| DS87C530-QCL | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
| DS87C530-QCL+ | 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 处理器系列:C8051F39x 数据总线宽度:8 bit 最大时钟频率:50 MHz 程序存储器大小:16 KB 数据 RAM 大小:1 KB 片上 ADC:Yes 工作电源电压:1.8 V to 3.6 V 工作温度范围:- 40 C to + 105 C 封装 / 箱体:QFN-20 安装风格:SMD/SMT |
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