71M6541D Datasheet, PDF (42/166 Pages) Maxim Integrated Products – 0.1% Accuracy Over 2000:1 Current Range Energy Meter ICs

71M6541D/F/G and 71M6542F/G Data Sheet
IEN1[2]
IEN1[1]
IEN1[0]
Bit
IEN2[0]
EX3 EX3 = 0 disables external interrupt 3: CE_BUSY
EX2 EX2 = 0 disables external interrupt 2:
XPULSE, YPULSE, WPULSE or VPULSE
–
Not Used.
Table 28: The IEN2 Bit Functions (SFR 0x9A)
Symbol
Function
ES1 ES1 = 0 disables the serial channel 1 interrupt.
Bit
TCON[7]
TCON[6]
TCON[5]
TCON[4]
TCON[3]
TCON[2]
TCON[1]
TCON[0]
Table 29: TCON Bit Functions (SFR 0x88)
Symbol
Function
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: DIO status changed
IT1 External interrupt 1 type control bit:
0 = interrupt on low level.
1 = interrupt on falling edge.
IE0 External interrupt 0 flag: DIO status changed
IT0 External interrupt 0 type control bit:
0 = interrupt on low level.
1 = interrupt on falling edge.
Bit
T2CON[7]
T2CON[6]
T2CON[5]
T2CON[4:0]
Table 30: The T2CON Bit Functions (SFR 0xC8)
Symbol
Function
–
Not used.
I3FR
I2FR
Polarity control for external interrupt 3: CE_BUSY
0 = falling edge.
1 = rising edge.
Polarity control for external interrupt 2:
XPULSE, YPULSE, WPULSE and VPULSE
0 = falling edge.
1 = rising edge.
–
Not used.
Bit
IRCON[7]
IRCON[6]
IRCON[5]
IRCON[4]
IRCON[3]
IRCON[2]
Table 31: The IRCON Bit Functions (SFR 0xC0)
Symbol
Function
–
Not used
–
Not used
IEX6
IEX5
IEX4
IEX3
1 = External interrupt 6 occurred and has not been cleared:
XFER_BUSY, RTC_1S, RTC_1M or RTC_T
1 = External interrupt 5 occurred and has not been cleared:
EEPROM or SPI
1 = External interrupt 4 occurred and has not been cleared:
VSTAT
1 = External interrupt 3 occurred and has not been cleared:
CE_BUSY