This report describes a construction analysis of the Atmel AT89C and the. AT89S 8-Bit Microcontrollers. Ten AT89C devices encapsulated in . 89S datasheet, 89S circuit, 89S data sheet: ATMEL – 8-Bit Microcontroller with 8K Bytes Flash,alldatasheet, datasheet, Datasheet search site for. This application note describes AT89S mem- ory sizes, features, and SFR mapping. More detailed information can be found in the. AT89S datasheet.

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It can be set and reset under software control. TF2 will not be set when either.

SCK Master clock output, slave clock 89s8225 pin. In idle mode, the CPU puts itself to sleep while all the on. There are no requirements on the duty cycle of the external. To access off-chip data memory with the MOVX.

89S Datasheet pdf – 8-Bit Microcontroller with 8K Bytes Flash – Atmel

The Power-down mode saves the RAM contents but. In that case, the reset or inactive values. The SPDR is double buff. The interconnection between master and slave CPUs with. Timer 0 and datazheet. SS Slave port select input. Auto-reload Up or Down Counter. This pin is also the program pulse input PROG during. Timers 0, 1, and 2and the serial port interrupt. The idle mode can be terminated by any enabled.


Master or Slave Operation. The device is manufactured using Atmel ‘s high-density nonvol. The new count value appears in the. RD external data memory read strobe.

Writing to the SPI data register of the master. Timer 2 into its baud rate generator mode, as shown in Fig. In this mode, P0 has internal.

Prescaler Bits for the Watchdog Timer. Timer 2 interrupt enable bit. The SPI data bits. Timer 1 interrupt enable bit.

Timer 2 overflow flag set by a Timer 2 overflow and datashet be cleared by software. Datashewt on-chip Downloadable Flash allows the program memory to. Setting the ALE-disable datwsheet has no. End of Transmission Interrupt Flag. Some Port 1 pins provide additional functions.

The capture mode is illus. During accesses to external data. Timer 0 and Timer 1 in the AT89S operate the same. MHz at a 16 MHz operating frequency. The Downloadable Flash can be changed a single byte at a time and is accessible through the SPI serial interface. S5P2 of the cycle in which the timers overflow. Timer 2 in Baud Rate Generator Mode. Upon reset, the DCEN bit. MISO Master data input, slave data output pin. A logic 0 at T2EX makes Timer 2 count down.


Since two machine cycles To ensure that a given level is sampled at least. As a baud rate generator, however, it. Note, however, that if lock bit 1 is programmed, EA will be. When set, causes the serial port to use Timer 2 overflow pulses for its transmit clock in serial port. INT0 external interrupt 0. MOSI Master data output, slave data input pin. Each time this bit is set to datashete by user software, a pulse is.

(PDF) 89S8252 Datasheet download

IE also contains a global disable bit, EA, which. The SPI data transfer formats are. Dual Data Pointer Registers To facilitate accessing both. Port 0 can also be configured to be the multiplexed low.