MCS51 Timer Calculator

Tipe IC	AT89x51 AT89x52
Mode Timer	Mode 0 (13Bit) Mode 1 (16Bit) Mode 2 (8Bit Auto Reload) Mode 3 (16+8Bit)

TMOD

1	1	1	1	1	1	1	1
Gate	C/T	M1	M0	Gate	C/T	M1	M0
Timer 1				Timer 0