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參數資料
| 型號： | DS87C550-FNL |
| 英文描述： | EPROM High-Speed Micro with A/D and PWM |
| 中文描述： | 存儲器高速微與A / D及PWM |
| 文件頁數： | 2/50頁 |
| 文件大小： | 763K |
| 代理商： | DS87C550-FNL |
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DS87C550
2 of 50
DESCRIPTION
The DS87C550 EPROM High-Speed Micro with A/D and PWM is a member of the fastest 100% 8051-
compatible microcontroller family available. It features a redesigned processor core that removes wasted
clock and memory cycles. As a result, it executes 8051 instructions up to three times faster than the
original architecture for the same crystal speed. The DS87C550 also offers a maximum crystal speed of
33 MHz, resulting in apparent execution speeds of up to 99 MHz.
The DS87C550 uses an industry standard 8051 pin-out and includes standard resources such as three
timer/counters, and 256 bytes of scratchpad RAM. This device also features 8 kbytes of EPROM with an
extra 1 kbyte of data RAM (in addition to the 256 bytes of scratchpad RAM), and 55 I/O ports pins. Both
One-Time-Programmable (OTP) and windowed packages are available.
Besides greater speed, the DS87C550 includes a second full hardware serial port, seven additional
interrupts, a programmable watchdog timer, brownout monitor, and power-fail reset.
The DS87C550 also provides dual data pointers (DPTRs) to speed block data memory moves. The user
can also dynamically adjust the speed of external accesses between two and 12 machine cycles for
flexibility in selecting memory and peripherals.
Power Management Mode (PMM) is useful for portable or battery-powered 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 allows the processor to run at 1024 clocks per cycle.
For example, at 12 MHz, standard operation has a machine cycle rate of 3 MHz. In Power Management
Mode, software can select an 11.7 kHz (12 MHz/1024) machine cycle rate. There is a corresponding
reduction in power consumption due to the processor running slower.
The DS87C550 also offers two features that can significantly reduce electromagnetic interference (EMI).
One EMI reduction feature allows software to select a reduced emission mode that disables the ALE
signal when it is unneeded. The other EMI reduction feature controls the current to the address and data
pins interfacing to external devices producing a controlled transition of these signals.
ORDERING INFORMATION
PART NUMBER
DS87C550-QCL
DS87C550-FCL
DS87C550-QNL
DS87C550-FNL
DS87C550-KCL
PACKAGE
68-pin PLCC
80-pin PQFP
68-pin PLCC
80-pin PQFP
68-pin windowed CLCC
MAX. CLOCK SPEED
33 MHz
33 MHz
33 MHz
33 MHz
33 MHz
TEMPERATURE RANGE
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
0°C to 70°C
相關PDF資料 |
PDF描述 |
|---|---|
| DS87C550-KCL | EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QNL | EPROM High-Speed Micro with A/D and PWM |
| DS8820J | Line Receiver |
| DS8859AJ | LED Display Driver |
| DS8859AN | LED Display Driver |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS87C550-KCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QCL+ | 功能描述:IC MCU EPROM ADC/PWM HS 68-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設備:LED，POR，WDT 輸入/輸出數:9 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件 |
| DS87C550-QCW | 制造商:Maxim Integrated Products 功能描述:DS87C550 WAIVERED FOR LS & MARKING - Rail/Tube |
| DS87C550-QNL | 功能描述:IC MCU EPROM ADC/PWM HS 68-PLCC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設備:LED，POR，WDT 輸入/輸出數:9 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數據轉換器:- 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件 |
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