P89V51RD2FA Datasheet

Embedded - Microcontrollers


The P89V51RD2FA is an 80C51 microcontroller with 64 kB Flash and 1024 bytes ofdata RAM.A key feature of the P89V51RD2FA is its X2 mode option. The design engineer canchoose to run the application with the conventional 80C51 clock rate (12 clocks permachine cycle) or select the X2 mode (6 clocks per machine cycle) to achieve twicethe throughput at the same clock frequency. Another way to benet from this featureis to keep the same performance by reducing the clock frequency by half, thusdramatically reducing the EMI.The Flash program memory supports both parallel programming and in serialIn-System Programming (ISP). Parallel programming mode offers gang-programmingat high speed, reducing programming costs and time to market. ISP allows a deviceto be reprogrammed in the end product under software control. The capability toeld/update the application rmware makes a wide range of applications possible.The P89V51RD2FA is also In-Application Programmable (IAP), allowing the Flashprogram memory to be recongured even while the application is running. AT24C01A Features • 80C51 Central Processing Unit• 5 V Operating voltage from 0 MHz to 40 MHz• 16/32/64 kB of on-chip Flash user code memory with ISP (In-System Programming) and IAP (In-Application Programming)• Supports 12-clock (default) or 6-clock mode selection via software or ISP• SPI (Serial Peripheral Interface) and enhanced UART• PCA (Programmable Counter Array) with PWM and Capture/Compare functions• Four 8-bit I/O ports with three high-current Port 1 pins (16 mA each)• Three 16-bit timers/counters• Programmable watchdog timer• Eight interrupt sources with four priority levels• Second DPTR register• Low EMI mode (ALE inhibit)• TTL- and CMOS-compatible logic levels


[{"Name":"Core","Value":"80C51"},{"Name":"Data Bus Width","Value":"8 bit"},{"Name":"Maximum Clock Frequency","Value":"40 MHz "},{"Name":"Program Memory Size","Value":"64 KB"},{"Name":"Data RAM Size","Value":"1024 B "},{"Name":"On-Chip ADC","Value":"No"},{"Name":"Operating Supply Voltage ","Value":"4.5 V to 5.5 V "},{"Name":"Maximum Operating Temperature","Value":"+ 85 C"},{"Name":"Package / Case","Value":"PLCC-44"},{"Name":"Mounting Style","Value":"SMD/SMT"}]

Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, analog and mixed-signal semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets.
Diodes’ products include diodes, rectifiers, transistors, MOSFETs, protection devices, function-specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors, power management devices, including LED drivers, AC-DC converters and controllers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers.
Diodes’ corporate headquarters and Americas’ sales office are located in Plano, Texas and Milpitas, California. Design, marketing, and engineering centers are located in Plano; Milpitas; Taipei, Taiwan; Taoyuan City, Taiwan; Zhubei City, Taiwan; Manchester, England; and Neuhaus, Germany. Diodes’ wafer fabrication facilities are located in Manchester and Shanghai, China. Diodes has assembly and test facilities located in Shanghai, Jinan, Chengdu, and Yangzhou, China, as well as in Hong Kong, Neuhaus and Taipei. Additional engineering, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; Shanghai; Shenzhen, China; Seongnam-si, South Korea; and Munich, Germany, with support offices throughout the world.

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