Datasheet

73S1215F Data Sheet DS_1215F_003
36 Rev. 1.4
Timer/Counter Control Register (TCON): 0x88 Å 0x00
Table 23: The TCON Register
MSB LSB
TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0
Bit Symbol Function
TCON.7 TF1 Timer 1 overflow flag.
TCON.6 TR1 Not used for interrupt control.
TCON.5 TF0 Timer 0 overflow flag.
TCON.4 TR0 Not used for interrupt control.
TCON.3 IE1 Interrupt 1 edge flag is set by hardware when the falling edge on external
interrupt int1 is observed. Cleared when an interrupt is processed.
TCON.2 IT1 Interrupt 1 type control bit. 1 selects falling edge and 0 selects low level for
input pin to cause an interrupt.
TCON.1 IE0 Interrupt 0 edge flag is set by hardware when the falling edge on external
interrupt int0 is observed. Cleared when an interrupt is processed.
TCON.0 IT0 Interrupt 0 type control bit. 1 selects falling edge and 0 sets low level for input
pin to cause interrupt.
Timer/Interrupt 2 Control Register (T2CON): 0xC8 Å 0x00
Table 24: The T2CON Register
MSB LSB
– I3FR I2FR – – – – –
Bit Symbol Function
T2CON.7 –
T2CON.6 I3FR
External interrupt 3 failing/rising edge flag.
I3FR = 0 external interrupt 3 negative transition active.
I3FR = 1 external interrupt 3 positive transition active.
T2CON.5 I2FR
External interrupt 3 failing/rising edge flag.
I2FR = 0 external interrupt 3 negative transition active.
I2FR = 1 external interrupt 3 positive transition active.
T2CON.4 –
T2CON.3 –
T2CON.2 –
T2CON.1 –
T2CON.0 –