putchar(unsigned char ch){
if(bLcd_Flg){
lcd_write(ch);
} else{
SBUF = ch;
}
}


If this is really the code you are using for putchar() there is no way that output via the UART is going to work reliably. You are not waiting for TI before writing to SBUF. Where is the return value from putchar()? Please cut and paste the code you are actually using.

Also, take a look at the code generated below. If you pass an unadorned 5 to printf() only one byte is passed. %d expects a two byte integer, as Keil is big-endian the 5 will be seen as the high byte meaning that the value output will be somewhere between 0x500 and 0x5ff depending what garbage happens to be present in the low byte:

   19:    printf("%d",5);
000425 7BFF              MOV     R3,#0FFH
000427 7A04              MOV     R2,#HIGH 01000420H
000429 7920              MOV     R1,#LOW 01000420H
00042B 750B05            MOV     ?_printf?BYTE+03H,#05H
00042E 1165              ACALL   _printf

   19:    printf("%d",(int)5);
000425 7BFF              MOV     R3,#0FFH
000427 7A04              MOV     R2,#HIGH 01000420H
000429 7920              MOV     R1,#LOW 01000420H
00042B 750B00            MOV     ?_printf?BYTE+03H,#00H
00042E 750C05            MOV     ?_printf?BYTE+04H,#05H
000431 1165              ACALL   _printf