71M6531D_10 Datasheet, PDF (31/120 Pages) Teridian Semiconductor Corporation – Energy Meter IC

FDS 6531/6532 005
Data Sheet 71M6531D/F-71M6532D/F
Bit
IEN1[7]
IEN1[6]
IEN1[5]
IEN1[4]
IEN1[3]
IEN1[2]
IEN1[1]
IEN1[0]
Table 25: The IEN1 Bit Functions (SFR 0xB8)
Symbol
–
Not used.
Function
–
Not used.
EX6 EX6 = 0 disables external interrupt 6: XFER_BUSY, RTC_1SEC, WD_NROVF
EX5 EX5 = 0 disables external interrupt 5: EEPROM_BUSY
EX4 EX4 = 0 disables external interrupt 4: PLL_OK (rise), PLL_OK (fall)
EX3 EX3 = 0 disables external interrupt 3: CE_BUSY
EX2 EX2 = 0 disables external interrupt 2: FWCOL0, FWCOL1, SPI
– Not Used.
Bit
IEN2[0]
Table 26: 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]
Symbol
TF1
TR1
TF0
TR0
IE1
IT1
IE0
IT0
Table 27: TCON Bit Functions (SFR 0x88)
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:
0 = interrupt on low level.
1 = interrupt on falling edge.
External interrupt 0 flag
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]
Symbol
–
I3FR
I2FR
–
Table 28: The T2CON Bit Functions (SFR 0xC8)
Function
Not used.
Polarity control for external interrupt 3: CE_BUSY
0 = falling edge.
1 = rising edge.
Polarity control for external interrupt 2: FWCOL0, FWCOL1, SPI
0 = falling edge.
1 = rising edge.
Not used.
Bit
IRCON[7]
IRCON[6]
IRCON[5]
IRCON[4]
IRCON[3]
IRCON[2]
Table 29: 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.
1 = External interrupt 5 occurred and has not been cleared.
1 = External interrupt 4 occurred and has not been cleared.
1 = External interrupt 3 occurred and has not been cleared.
v1.3
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