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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Timer 2 consists of two 8-bit registers, TH2 and TL2.

Table 9 for Timer 2. User software should never write 1s to unimplemented bits, because. Read accesses to these addresses will in general return. Timer 1 interrupt enable bit. To access off-chip data memory with the MOVX. WR external data memory write strobe. The capture mode is illus. When 1s are written dstasheet Port 2 pins, they are pulled high by. Writing to the SPI data register of the master. Upon reset, the DCEN bit.


Timer 2 in Baud Rate Generator Mode. Note that s tack operations are examples of indirec t. When the WDT times out without. Timer 2 external enable. Low-power Idle and Power-down Modes. When the AT89S is executing code from external pro.

End of Transmission Interrupt Flag.

The SPI data bits. Port 0 can also be configured to be the multiplexed low.

(PDF) 89S8252 Datasheet download

Timer 0 interrupt enable bit. Port 2 pins that are externally being pulled low will source. The prescaler bits, PS0, PS1. Note that Table 10 shows that bit position IE. Timer 2 is not being used to clock the serial port. If desired, ALE operation can be disabled by setting bit 0 of. Timer 2 or RCAP2 registers. Watchdog Timer Enable Bit.

89S Datasheet(PDF) – ATMEL Corporation

The type of operation is. When set, allows a capture or reload to occur as a result of a negative transition on T2EX if. The idle mode can be terminated by any enabled.


Interrupt Registers The global interrupt enable bit and the. Instructions that use indirect addressing access the upper. Output from the inverting oscillator amplifier.

SPI is shown in the following figure. Port 3 also receives some control signals for Flash pro. Port 3 pins that are datasehet being pulled low will source.

There are no requirements on the duty cycle of the external. In this mode, P0 has internal. Timer function, the TL2 register is incremented every.

Note, however, that if lock bit 1 is programmed, EA will be. In this mode, two options are selected by bit. RD external data memory read strobe. Instructions that use direct.