AT89C51RB2-RLTUM

AT89C51RB2-RLTUM概述

ATMEL  AT89C51RB2-RLTUM  微控制器, 8位, 高性能闪存, AT89C51, 60 MHz, 16 KB, 1 KB, 44 引脚, VQFP

The is a high-performance 8-bit Microcontroller with 16kB flash. The flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin. It retains all features of the 80C52 with 256byte of internal RAM, a 9-source 4-level interrupt controller and three timers/counters. It features a programmable counter array, an XRAM of 1024byte, hardware watchdog timer, keyboard interface, SPI interface, versatile serial channel that facilitates multiprocessor communication EUART and a speed improvement mechanism X2 mode. Implementing an external brown-out is recommended to prevent any flash/EEPROM corruption during power-on or power-off. The fully static design reduces system power consumption of the microcontroller by allowing it to bring the clock frequency down to any value, even DC, without loss of data.

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80C52 Compatible
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8051 Instruction compatible
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Three 16-bit timers/counters
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256byte Scratch pad RAM
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9 Interrupt sources with 4 priority levels
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Dual data pointer
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Variable length MOVX for slow RAM/Peripherals
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ISP In-system programming using standard VCC power supply
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Boot ROM contains low level flash programming routines and a default serial loader
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Keyboard interrupt interface on Port P1
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SPI interface Master/Slave mode
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8-bit Clock prescaler
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Improved X2 mode with independent selection for CPU and each peripheral
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5-channel Programmable counter array
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Asynchronous port reset
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Full-duplex enhanced UART with dedicated internal baud rate generator
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Low EMI Inhi-bit ALE
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Hardware watchdog timer One-time enabled with reset-out
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Power control modes - Idle mode, Power-down mode
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