;/    ***********************
;/    *                     *
;/    *     ATMega48P        *
;/    *   Jig for Hotel     *
;/    *                     *
;/    ***********************
;+ Version 1.0
.nolist
.include "m48def.inc"
.list
.listmac
.include "macros_Jig.asm"
.include "JigHotelTV.inc"    
;*************************************************
;*     ;;/ Определение командного сегмента;;*             *
;**************************************************
        .cseg
        .org 0
;*************************************************
;*     ;;/Initialization прерываний;;*            *
;*************************************************
        rjmp RESET; Reset Handler
;        rjmp EXT_INT0; IRQ0 Handler
;        rjmp EXT_INT1; IRQ1 Handler
;        rjmp PCINT0; PCINT0 Handler
;        rjmp PCINT1; PCINT1 Handler
;        rjmp PCINT2; PCINT2 Handler
;        rjmp WDT; Watchdog Timer Handler
;        rjmp TIM2_COMPA; Timer2 Compare A Handler
;        rjmp TIM2_COMPB; Timer2 Compare B Handler
;        rjmp TIM2_OVF; Timer2 Overflow Handler
;        rjmp TIM1_CAPT; Timer1 Capture Handler
;        rjmp TIM1_COMPA; Timer1 Compare A Handler
;        rjmp TIM1_COMPB; Timer1 Compare B Handler
;        rjmp TIM1_OVF; Timer1 Overflow Handler
;        rjmp TIM0_COMPA; Timer0 Compare A Handler
;        rjmp TIM0_COMPB; Timer0 Compare B Handler
;        rjmp TIM0_OVF; Timer0 Overflow Handler
;        rjmp SPI_STC; SPI Transfer Complete Handler
.org    URXCaddr
        rjmp USARTRXC        ; USART, RX Complete Handler
        rjmp USARTUDRE        ; USART, UDR Empty Handler
;        rjmp USART_TXC; USART, TX Complete Handler
;        rjmp ADC; ADC Conversion Complete
;        rjmp EE_RDY; EEPROM Ready Handler
;        rjmp ANA_COMP; Analog Comparator Handler
;        rjmp TWI; 2-wire Serial Interface
;        rjmp SPM_RDY; Store Program Memory Ready
;|                    KOOL                            
        .include    "Delays.asm"
        .include    "LCD.asm"
        .include    "USART.asm"
        .include    "JIGKeyBoard.asm"
;*************************************************
;*  ;;/Установка стека и Очитска регистров;;*   *
;*************************************************
RESET:
        cli                         ; запрет всех прерываний
        ldi        temp,$80           ; Запрещаем работу
        out        ACSR,temp; компаратора
        .include "1Init_MCU.asm"            ; Очистка памяти и всех регистров
            
;**************************************************
;*         ;;/Initialization PORTS;;*                  *
;**************************************************
        ldi        temp,0b_0000_1111
        out        DDRD,temp        ; ПортD старшие вход Младшие -выход    
        ldi        temp,0b_1111_1111
        out        PORTD,temp        ;- На старшие-(1), младшие RX0&RX1-подключены
        ldi        temp,0b_1110_1111
        out        DDRB,temp        ; ПортB старшие PB7-PB5,PB2-PB0 OUTputs, PB4 Input            
        ldi        temp,0b_1111_1111
        out        PORTB,temp        ;- Pull resistor down
;**************************************************
;*            ;;/Initialization LCD;;*              *
;**************************************************

        rcall    LCD_INIT        ;- Инициализация LCD

;**************************************************
;*        ;;/Initialization USARTs;;*              *
;**************************************************
            ;- INIT USART0
        ldi        temp,(SYSCLK/(16*USARTSPEED))-1
        sts        UBRR0L,temp
        ldi        temp,1<<RXCIE0|0<<UDRIE0|1<<RXEN0|0<<TXEN0
        sts        UCSR0B,temp
        ldi        temp,1<<USBS0|1<<UCSZ01|1<<UCSZ00
        sts        UCSR0C,temp
;+ Speed USART0 9600, 8-bit data, 1 STOP

/***********************************************
* RunApplication()                             *
*    This routine shuts-off peripherals used   *
* by the bootloader and performs jump to 0x0   *
* address                                      *
*                                              *
***********************************************/
void RunApplication(U8 PrintMsg)
{
    V32 tmp = 500000;
    if (PrintMsg)
        pgm_print("trying to run application...\n");
    
    if (brmContext.iapActivityDetected)
    {
        // try to confirm that CRC still OK
        iap_Finalize(); // make sure all flash operations are completed and RWW re-enabled
        brmContext.appSectionCRC = iap_CheckCRC();
        brmContext.iapActivityDetected = FALSE;
    }

    if (brmContext.appSectionCRC)
    {  
        // CRC changed (section corrupted)
        if(PrintMsg)
            pgm_print("app section CRC error detected, cant leave BRM\n");
        return;
    }

    while(tmp--);

    cli(); // disabale interrupts

    // stop timers
    ETIMSK = 0; // disable Extended timers int sources
    TIMSK  = 0; // disable timers int sources

    TCCR3B = 0; // stop timer3
    TCCR2  = 0; // stop timer2
    TCCR1B = 0; // stop timer1
    TCCR0  = 0; // stop timer0

    // stop uarts
    UCSR1B = 0; // stop UART1
    UCSR0B = 0; // stop UART0

    // stop SPIs
    SPCR   = 0; // stop SPI0

    // stop TWI bus
    TWCR   = 0; // stop TWI module
        
    // reset used ports
    DDRF   = 0;
    PORTF  = 0;
    
    DDRE   = 0;
    PORTE  = 0;
    
    DDRB   = 0;
    PORTB  = 0;

    // switch interrupt vector table to app section
    MCUCR = (1 << IVCE);
    MCUCR = (0 << IVSEL);

    // jump to zero address
    ((void(*)(void))0x0)();
}

SMCR =(1<<SE)|(1<<SM1); // ВХодим в POwerDown

Ну а собственно sleep где?

interrupt [WDT] void wdt_timeout_isr(void)
   {
    
//Check();
  //            #asm("SLEEP");  
   }


////////////////

if (ButtonNumber==255)
  {
   while ((x!=0)&&(y!=0)) {GetTouchStat(touch_x,touch_y);}   // При нажатии на виртуальную кнопку на дисплее запускается таймер
     #asm("cli");
#pragma optsize-
#asm("wdr")
WDTCSR |= (1<<WDCE) | (1<<WDE);
/* Set new prescaler(time-out) value = 64K cycles (~0.5 s) */
WDTCSR = (1<<WDIE) | (1<<WDP2) | (1<<WDP1);
#ifdef _OPTIMIZE_SIZE_
#pragma optsize+
#endif
    
#asm("sei");  

     SMCR =(1<<SE)|(1<<SM1);   //А затем усыпляем контроллер в PowerDOwn
     #asm("SLEEP");    

//    SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR1)|(1<<SPR0); // Настройка SPI


  }

}