Programming 8051 Timers Registers used for normal operation (No interrupts) TMOD, TH1,TL1, TH0, TL0, and TCON TMOD to set the Mode Timer Register to set the count TCON to start and stop the timer Registers used for Interrupt operation IE, TMOD, TH1,TL1, TH0, TL0, and TCON TMOD to set the Mode Timer-0 and Timer-1 Register to set the count TCON to start and stop the timer Register Formats: Interrupt Enable (IE) Register IE.7 IE.6 IE.5 IE.4 IE.3 IE.2 IE.1 IE.0 EA ET2 ES ET1 EX1 ET0 EX0 =0, disable =1 enable -- Enable/disable serial port interrupt Enable/disable timer-1 Ov interrupt Enable/disable external interrupt-1 Enable/disable timer-0 Ov interrupt Enable/disable external interrupt-0   TMOD Register: Timer-1 Timer-0 GATE C/T’ M1 M0 GATE C/T’ M1 M0 =1; The timer/counter enabled while INTx and TRx bit is set =0, timer enabled whenever TRx bit is set 1 = Counter 0=Timer 00=13 bit timer mode (8-bit timer/counter with TLx as 5-bit prescalar 01=16 bit timer mode, THx and TLx cascaded,