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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AT89C51ED2 Datasheet(PDF) – ATMEL Corporation

Set by hardware when an invalid stop bit is at98c51ed2. The second option is also not recommended if other PCA modules are being used. Flow Description Overview An initialization step must be performed after each Reset. The other characters, depending on their positions, stand for the name of a signal or the logical status of that signal.

Once the internal supply after the voltage regulator reach a safety level, the power monitor then looks at the XTAL clock input.

VIH min changed from 0.

Thus, in most applications the first solution is the best at89c15ed2. Set to enable SPI interrupt. Power-Down mode stops the oscillator, freezes all clock at known states. Remember, the PCA timer is the time base for all modules; changing the time base for other modules would not be a good idea. To communicate with slave A only, the master must send an address where bit 0 is clear e.



A cold start reset is the one induced by VCC switch-on. Page 90 Figure Must be cleared by software. In this case, the SPI system is affected in the following ways: Or point us to the URL where the manual is located.

This bit is set at89c51e2d hardware when a transfer has been completed.

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Set by user for general purpose usage. To communicate with slaves B and C, but not slave A, the master must send an address with bits 0 and 1 both set e. A default serial loader bootloader program allows ISP of the Flash. Page 76 Table CF may be set by either hardware or software but can only be cleared by software.

During the time that execution resumes, the internal RAM cannot be accessed; however, it is possible for the Port pins to be accessed. The WDT is by default disabled from exiting reset.

Page 10 NIC P2. Set to configure the SPI as a Master. Page 44 Figure Page 12 Table At8c51ed2 following is a list of all the characters and what they stand for.


When the pin is pulled low, it is driven strongly and able to sink a fairly large current.

AT89C51ED2 Microcontroller Datasheet

Can also be set by software. Page 74 Table Hardware conditions or regular boot process. Set to enable keyboard interrupt.

This is the power supply voltage for normal, idle and power-down operation Dstasheet. Do not try to set this bit. It provides both synchronous and asynchronous communication modes. Do not set this bit 6 datqsheet Reserved The value read from this bit is indeterminate. Watchdog timers are useful for systems that are susceptible to noise, power glitches, or electrostatic discharge. When the communication is initialized, the protocol depends on the record type requested by the host.

This output type can be used as both an input and output without the need to reconfigure the port.

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