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AT89CPI datasheet, AT89CPI pdf, AT89CPI data sheet, datasheet, data sheet, pdf, Atmel, 8-Bit Microcontroller with 2K Bytes Flash. The AT89C is a low-voltage, high-performance CMOS 8-bit The AT89C provides the following standard features: 2 Kbytes of Flash, bytes of. AT89CPI 8-bit Microcontroller With 2Kbytes Flash, V to V Features. Compatible with MCSTM Products 2 Kbytes of Reprogrammable Flash.

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Or, “in an emergency”, you can use two standard cheap sockets inserted into each other, so the soldered one is not subject to excessive mechanical stress.

Atmel AT89C2051 programmer

For example, resident printing programs can do almost anything with the LPT. April – Printed on recycled paper. Note that not all of the addresses are occupied, and unoccupied addresses may not be implemented on the chip. Maximum IOL per port pin: All major programming vendors offer worldwide support for the Atmel microcontroller series.

Data reading and verification is controlled by circuit – four multiplexers, allowing to read 8 bits via four parallel port input bits. With the AT89C51, it is not even possible to transfer contents of the internal FLASH memory if an external memory with a special software is attached to it. Either a quartz crystal or ceramic resonator may be used. Raise RST to 12V to enable programming.


Verification of the lock bits is achieved by observing that their features are enabled. Holding the RST pin high for two machine cycles while the oscillator is running resets the device. Increment Clock High Only used in volt programming mode.

AT89CPI Datasheet(PDF) – ATMEL Corporation

For ay89c2051-24pi involving interrupts the normal interrupt service routine address locations of the 80C51 family architecture have been preserved.

Violating the physical space limits may cause unknown program behavior.

According to our measurements, at89c2051-2pi consumption averages approximately 12 mA. Again, violating the memory boundaries may cause erratic execution. By combining a versatile 8-bit CPU with Flash on a monolithic chip, the Atmel AT89C is a powerful microcomputer which provides a highly-flexible and cost-effective solution to many embedded control applications. Port Pin Alternate Functions P3.

Oscillator Characteristics Port 1 also receives code data during Flash programming and verification. Apply new data to the port P1 pins. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein.


Output data can be read at the port P1 pins. In addition, the AT89C is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. This is one of the simplest programmers. It connects directly to a PC parallel port.

Features of the AT89C processor: During a write cycle, an attempted read of the last at89c2051-24po written will result in the complement of the written data on P1. To program the AT89C, the following sequence is recommended. Data Polling may begin any time after a write cycle has been initiated.

Repeat steps 5 through 8, changing data and advancing the address counter for at8c2051-24pi entire 2K bytes array or until the end of the object file is reached. The Port 3 output buffers can sink 20 mA. Read accesses to these datazheet will in general return User software should not write 1s to these unlisted locations, since they may be used in future products to invoke new features.

The values returned are as follows.