0 – July. 1. Qualification Package. AT89C51ED2. FLASH 8-bit C51 Microcontroller. 64 Kbytes FLASH, 2 Kbytes EEPROM. AT89C51RD2 / AT89C51ED2. AT89C51ED2-SLSUM Microchip Technology / Atmel 8-bit Microcontrollers – MCU 64kB Flash B RAM VV datasheet, inventory, & pricing. AT89C51ED2-SLSIM Microchip Technology / Atmel 8-bit Microcontrollers – MCU 80C31 w/4k datasheet, inventory, & pricing.

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Page 66 Figure Page 54 Table U MOVC instruction executed from external program memory is datasjeet from fetching code bytes from internal memory, EA is sampled and latched on reset, and further parallel programming of the on chip code memory is disabled. S2 0 0 daasheet 0 1 1 1 1 S1 S0Selected Time-out 00 – 1 machine cycles, Ordering Information Table It provides both synchronous and asynchronous communication modes.

Page 98 Figure It is obvious that only one Master SS high level can drive the network. A default serial loader bootloader program allows ISP of the Flash.

AT89C51ED2 Datasheet(PDF) – ATMEL Corporation

Dstasheet see a manual you are looking for? Set by user for general purpose usage. Flow Description Overview An initialization step must be performed after each Reset. During the time that execution resumes, the internal RAM cannot be accessed; however, it is possible for the Port pins to be accessed. To communicate with slave A only, the master must send an address where datashdet 0 is clear e.


Set to configure the SPI as a Master.

CF may be set by either hardware or software but can only be cleared by software. Generate dataxheet enabled external Keyboard interrupt same behavior as external interrupt. MODF is set to warn that there may be a multimaster conflict for system control. Page 42 Table An internal counter will count clock periods before the at89f51ed2 is de-asserted. It is driven by the Master for eight clock cycles which allows to exchange one Byte on the serial lines.


Set to enable a high level detection on Port line 7. Set to enable all interrupts.

Set to enable a high level detection on Port line 6. Once the internal supply after the voltage regulator reach a safety level, the power monitor then looks at the XTAL clock input. Page 74 Table All other vectors addresses are the same as standard C52 devices. From level 0, one can write level 1 or level 2. Page 62 Table This output type can be used as both an input and output without the need to reconfigure the port.


The other characters, depending on their positions, stand for the name of a signal or the logical status of that signal. Cleared by hardware when programming is done. Setting TR2 allows TL2 to increment by the selected input. A cold start reset is the one induced by VCC switch-on. Nevertheless, during internal code execution, ALE signal is still generated. When the communication is initialized, the protocol depends on the record type requested by the host. Page 52 Table Set by hardware when VCC rises from 0 to its nominal voltage.

Or point us to the URL where the manual is located. In this mode, program execution halts. Clear to select 6 clock periods per peripheral clock cycle. Page Table Pins are not guaranteed to sink current greater than the listed test conditions. Note that one ALE pulse is skipped during each access to external data memory.

Page 46 Figure