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.

Author: Male Nigar
Country: French Guiana
Language: English (Spanish)
Genre: Personal Growth
Published (Last): 28 November 2008
Pages: 332
PDF File Size: 20.58 Mb
ePub File Size: 13.32 Mb
ISBN: 845-1-24429-184-1
Downloads: 20844
Price: Free* [*Free Regsitration Required]
Uploader: Tak

Timer 0 external input I T1 P3.

Set to select DPTR1. Cleared by hardware when an interrupt or reset occurs. Setting TR2 allows TL2 to increment by the selected input Security level 2 and 3 should only be programmed after verification. I’ll change my headerfile that way anyway. Idle mode is detailed in Table At89x51re2 other trademarks are the property of their respective owners.

AT89C51RE2-RLTUM Atmel, AT89C51RE2-RLTUM Datasheet

Sorry guys but as Andy said the location SFRs which are not ending with 0 or 8 are not bit addressable. Each signature infor- mation shall be read unitary. Only SFR addresses ending ‘0’ or ‘8’ are bit-addressable Pratik Mahajan Then why is it given in the datasheet that way I’ve AT89c51re2 datasheet where above locations are shown as bit addressable or I mustn’t have read it well I’ll read it again – more carefully but I’m sure that these location are given as the way bit addressable locations are given.

Minor correction on Table 69 on page The following table summarizes the memory spaces for which the select page command can be applied. External data memory write strobe O RD P3. Otherwise I’ll check it once I start programming with AT89c51re2 I just thought this way it will save me some time and obviously few errors if there are. Do not set this bit. These bits allows to read or write the on-chip flash memory from one upper 32K bytes to another one In the Idle mode, the oscillator continues to run.


Set by hardware when external interrupt is detected on INT0 pin. This memory area can only be executed fetched when the processor enters the boot process.

To start the timer, set TR2 run control bit in T2CON register possible to use Timer baud rate generator and a clock generator simultaneously. The CF bit can only be cleared by software. If not can anybody check my header file please. If you really have found a genuine bug in the compiler, then you should report it direct to Keil. Port 3 also serves the special features of the 80C51 family, as listed below.

Chapter 3 – 80C51 Family Hardware Description: If two interrupt requests of different priority levels are received simultaneously, the request datahseet higher priority level is serviced. No license, express or implied, by estoppel or otherwise, to any intellectual property right is granted by this document or in connection with the sale of Atmel products.

Set to enable the general call address recognition. Set to disable SS in both Master and Slave modes.

AT89C51RE2-SLSEM Datasheet

This ensures that the serial port will reply to any address, and so, that it is backwards compatible with the 80C51 microcontrollers that do not support automatic address recognition. This is the way to verify at89c51er2 header file. Cleared by hardware when interrupt is processed if edge-triggered see IT0. These bits are active only in X2 mode. Instructions shared Action Read Write Note: Set to enable the CEXn pin to be used as a pulse width modulated output.

The keyboard interface interfaces with the C51 core through 3 special function registers: Set to configure the SPI as a Master. Copy your embed code and put on your site: Thus within each priority level there is a second priority structure determined by the polling sequence.


As inputs, Port 3 pins that are externally pulled low will source current because of the internal pull-ups.

The M0 bit allows to stretch the XRAM timings set, the read and write pulses are extended from clock periods. By the way, the last time I asked somebody here to review my stuff it was a lot more that a header file, believe me: There are two ways to exit the Power-Down mode: This assumes interrupts are ETx PD Set to activate the Power-Down mode. Alternate function of Port 1 2: Elcodis is a trademark of Elcodis Company Ltd. Must be 0 for clock out mode. Change in headerfile Andy Neil Since there are so many such changes, it’d probab;y be worth reposting – it’ll make the file much shorter!

In other words, the block move routine works the same whether DPS is ‘0’ or ‘1’ on entry. This is useful to access external slow peripherals.

Datasueet if its correct can I upload it here for further usage? Then why is it given in the datasheet that dataaheet I’ve AT89c51re2 datasheet where above locations are shown as bit addressable or I mustn’t have read it well I’ll read it again – more carefully but I’m sure that these location are given as the way bit addressable locations are given. This originated from many debuggiung sessions where some use of a bit was ‘hidden’ e.

This is achieved by applying an internal reset to them.