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参数资料
| 型号： | DS87C520-QNL/T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 23/43页 |
| 文件大小： | 0K |
| 描述： | IC MCU EPROM/ROM 33MH IND 44PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 500 |
| 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： | 44-LCC（J 形引线） |
| 包装： | 带卷 (TR) |
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DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
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DESCRIPTION
The DS87C520/DS83C520 EPROM/ROM high-speed microcontrollers are fast 8051-compatible
microcontrollers. They feature a redesigned processor core without wasted clock and memory cycles. As
a result, the devices execute every 8051 instruction between 1.5 and 3 times faster than the original for
the same crystal speed. Typical applications will see a speed improvement of 2.5 times using the same
code and the same crystal. The DS87C520/DS83C520 offer a maximum crystal speed of 33MHz,
resulting in apparent execution speeds of 82.5MHz (approximately 2.5X).
The DS87C520/DS83C520 are pin compatible with all three packages of the standard 8051, and include
standard resources such as three timer/counters, serial port, and four 8-bit I/O ports. They feature 16kB of
EPROM or mask ROM with an extra 1kB of data RAM. Both OTP and windowed packages are
available.
Besides greater speed, the microcontroller includes a second full hardware serial port, seven additional
interrupts, programmable Watchdog Timer, Brownout Monitor, and Power-Fail Reset. The device also
provides dual data pointers (DPTRs) to speed block data memory moves. It also can adjust the speed of
MOVX data memory access from two to nine machine cycles for flexibility in selecting external memory
and peripherals.
A new Power Management Mode (PMM) is useful for portable applications. This feature allows software
to select a lower speed clock as the main time base. While normal operation has a machine cycle rate of 4
clocks per cycle, the PMM runs the processor at 64 or 1024 clocks per cycle. For example, at 12MHz,
standard operation has a machine cycle rate of 3MHz. In Power Management Mode, software can select
either 187.5kHz or 11.7kHz machine cycle rate. There is a corresponding reduction in power
consumption when the processor runs slower.
The EMI reduction feature allows software to select a reduced emission mode. This disables the ALE
signal when it is unneeded.
The DS83C520 is a factory mask ROM version of the DS87C520 designed for high-volume, cost-
sensitive applications. It is identical in all respects to the DS87C520, except that the 16kB of EPROM is
replaced by a user-supplied application program. All references to features of the DS87C520 will apply to
the DS83C520, with the exception of EPROM-specific features where noted. Please contact your local
Dallas Semiconductor sales representative for ordering information.
相关PDF资料 |
PDF描述 |
|---|---|
| DS87C520-QNL | IC MCU EPROM/ROM 33MH IND 44PLCC |
| DS87C520-MNL | IC MCU EPROM/ROM 33MH IND 40-DIP |
| DS87C530-QCL | IC MCU EPR/ROM W/RTC 33MZ 52PLCC |
| VE-2NH-IX-F2 | CONVERTER MOD DC/DC 52V 75W |
| VE-2NH-IX-F1 | CONVERTER MOD DC/DC 52V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS87C520-WCL | 功能描述:8位微控制器 -MCU EPROM/ROM High-Speed 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 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM MICRO WITH REAL TIME CLOCK |
| DS87C530_05 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS87C530_1 | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Micro with Real Time Clock |
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