71M6403-IGTR TERIDIAN [Teridian Semiconductor Corporation], 71M6403-IGTR Datasheet - Page 31

• Manufacturer Part Number: 71M6403-IGTR
• Description: Electronic Trip Unit
• Manufacturer: TERIDIAN [Teridian Semiconductor Corporation]

Timer/Counter Control register (TCON)
Interrupt Request register (IRCON)
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).
Page: 31 of 75
Bit
Bit
IRCON.7
IRCON.6
IRCON.5
IRCON.4
IRCON.3
IRCON.2
IRCON.1
IRCON.0
TCON.7
TCON.6
TCON.5
TCON.4
TCON.3
TCON.2
TCON.1
TCON.0
MSB
MSB
Symbol
Symbol
TF1
IEX6
IEX5
IEX4
IEX3
IEX2
TR1
TR0
TF1
TF0
IE1
IE0
IT1
IT0
-
-
-
Function
Timer 1 overflow flag
Not used for interrupt control
Timer 0 overflow flag
Not used for interrupt control
External interrupt 1 flag
External interrupt 1 type control bit
External interrupt 0 flag
External interrupt 0 type control bit
Function
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
TR1
EX6
Table 42: The IRCON Bit Functions
Table 40: The TCON Bit Functions
TF0
©
Table 41: The IRCON Register
Table 39: The TCON Register
2006 TERIDIAN Semiconductor Corporation
IEX5
TR0
IEX4
IE1
IT1
IEX3
Electronic Trip Unit
IE0
IEX2
LSB
LSB
IT0
71M6403
SEPTEMBER 2006
REV 1.0