71M6403 Datasheet, PDF (31/75 Pages) Teridian Semiconductor Corporation – Electronic Trip Unit

71M6403
Electronic Trip Unit
SEPTEMBER 2006
Timer/Counter Control register (TCON)
MSB
TF1
TR1
TF0
TR0
IE1
IT1
Table 39: The TCON Register
Bit
Symbol Function
TCON.7
TCON.6
TCON.5
TCON.4
TCON.3
TCON.2
TCON.1
TCON.0
TF1 Timer 1 overflow flag
TR1 Not used for interrupt control
TF0 Timer 0 overflow flag
TR0 Not used for interrupt control
IE1 External interrupt 1 flag
IT1 External interrupt 1 type control bit
IE0 External interrupt 0 flag
IT0 External interrupt 0 type control bit
Table 40: The TCON Bit Functions
LSB
IE0
IT0
Interrupt Request register (IRCON)
MSB
EX6
IEX5
IEX4
IEX3
Table 41: The IRCON Register
Bit
Symbol Function
IRCON.7
IRCON.6
IRCON.5
IRCON.4
IRCON.3
IRCON.2
IRCON.1
IRCON.0
-
-
IEX6
IEX5
IEX4
IEX3
IEX2
-
External interrupt 6 edge flag
External interrupt 5 edge flag
External interrupt 4 edge flag
External interrupt 3 edge flag
External interrupt 2 edge flag
Table 42: The IRCON Bit Functions
LSB
IEX2
Note: Only TF0 and TF1 (timer 0 and timer 1 overflow flag) will be automatically cleared by hardware when the service routine is
called (Signals T0ACK and T1ACK – port ISR – active high when the service routine is called).
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© 2006 TERIDIAN Semiconductor Corporation
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