參數(shù)資料
型號(hào)： DS87C530-ECL
廠商： DALLAS SEMICONDUCTOR
元件分類： Microcontroller
英文描述： 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP52
封裝： TQFP-52
文件頁(yè)數(shù)： 41/44頁(yè)
文件大?。?/td> 754K
代理商： DS87C530-ECL
DS87C530/DS83C530
6 of 44
PLCC
TQFP
SIGNAL
NAME
DESCRIPTION
27, 28
20, 21
RTCX2,
RTCX1
RTCX2, RTCX1 - Timekeeping crystal. A 32.768 kHz crystal
between these pins supplies the time-base for the Real Time
Clock. The device supports both 6 pF and 12.5 pF load
capacitance crystals as selected by an SFR bit described below. To
prevent noise from affecting the RTC, the RTCX2 and RTCX1 pin
should be guard-ringed with GND2.
2, 11,
13, 14,
40, 41
4, 6, 7,
33, 34,
47
NC
NC - Reserved. These pins should not be connected. They are
reserved for use with future devices in the family.
COMPATIBILITY
The DS87C530/DS83C530 is a fully static, CMOS 8051-compatible microcontroller designed for high
performance. While remaining familiar to 8051 users, it has 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 Micro performs its instructions much faster than the
original for any given crystal selection. The DS87C530/DS83C530 runs the standard 8051 instruction set.
It is not pin-compatible with other 8051s due to the timekeeping crystal.
The DS87C530/DS83C530 provides three 16-bit timer/counters, full-duplex serial port (2), 256 bytes of
direct RAM plus 1 kB 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 provides several new hardware features implemented by new Special
Function Registers. A summary of these SFRs is provided below.
PERFORMANCE OVERVIEW
The DS87C530/DS83C530 features a high-speed, 8051-compatible core. Higher speed comes not just
from increasing the clock frequency, but 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 121 ns (8.25 MIPs). The Dual Data Pointer feature also allows the
user to eliminate wasted instructions when moving blocks of memory.
相關(guān)PDF資料
PDF描述
DS87C520-MCL 8-BIT, OTPROM, MICROCONTROLLER, PDIP40
DS87C520-QNL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC44
DS87C520-QCL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC44
DS87C520-ECL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP44
DS87C520-MNL 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PDIP40
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS87C530-ECL+ 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 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
DS87C530-ENL 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 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
DS87C530-ENL+ 制造商:DALLAS 制造商全稱: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 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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