Atmel AT89C51RE2. The Atmel Data Sheet 2,, bytes. Errata Sheet 68, bytes. Instruction Set Manual for the Atmel AT89C51RE2 Instruction Set. AT89C51RE2 High performance 8-bit microcontroller with Kbytes Flash Features. Instruction Compatible Six 8-bit I/O Ports (64 pins or 68 Pins. AT89C51RE2-SLSUM MCU 8BIT FLASH V PLCC Atmel datasheet pdf data sheet FREE from Datasheet (data sheet) search for.

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Receive Interrupt flag Clear to acknowledge interrupt. The four segments are: The value read from this bit is indeterminate.

Header file for AT89C51RE2

Physical memory organisation Fuse Configuration Byte 1 byte See chapter 2 of the so-called “bible” for the vatasheet Set to select DPTR1. As inputs, Port 3 pins that are externally pulled low will source current because of the internal pull-ups.

Thus, in most applications the first solution is the best option. If you really have found a genuine bug in the compiler, then you should report it direct to Keil.


AT89C51RE2 Datasheet(PDF) – ATMEL Corporation

Record length specifies the number of Bytes of information or data which follows the Record Type field of the record. Physical memory Figure 9. Cleared by hardware when an interrupt or reset occurs.

Sorry Andy you are correct I just read it till the end of SFRs and didn’t notice the next page – the information is given bit addressable way at98c51re2 they are not bit addresssable. Products Download Events Support Videos. This is useful to access external slow peripherals. Load Accumulator register with the data to write.

SPIX2 Clear to select 6 clock periods per peripheral clock cycle.

Minor correction on Table 69 on page Communication link Two interfaces are available for ISP: Set by hardware at the end of the 8th bit time in mode the beginning of the stop bit in the other modes.

The instruction that sets IDL bit is the last datashfet executed.

If the internal power supply falls below a safety level, a reset is immediately asserted. Writing is possible from h to FFFFh, address bits are used to select an address within a page while bits are used to select the programming address of the page. Set by datasehet when external interrupt is detected on INT0 pin.


Set to enable KBF.

AT89C51RE2 Datasheet PDF

Idle mode bit IDL Cleared by hardware when interrupt or reset occurs. Set to enable external interrupt 0. Acknowledge bit low level at SDA A: Thanks a lot Andy I’ve removed all the wrong bit addressable definitions. Alternate function of Port 3 3: Download datasheet 3Mb Share this page. Flags are cleared when vectoring to the Timer interrupt rou- tine.

The CF bit can only be cleared at89c51ge2 software. Alternate function of Port 1 2: Take the x value in the corre- sponding column -M or -L and use this value in the formula. MOVC instruction executed from external program memory are disabled from fetching code bytes from internal memory sampled and latched on reset, and further parallel programming of the Flash is disabled