71M6543F Datasheet, PDF (46/157 Pages) Maxim Integrated Products – Selectable Gain of 1 or 8 for One Current Energy Meter ICs Metrology Compensation

71M6543F/H and 71M6543G/GH Data Sheet
No. External
Source
0
DIO
Internal
Source
DIO status
changed
Individual
Enable Bits
DIO_Rn
Individual Flags
TCON.1 (IE0)
UART1
(optical)
byte received
byte transmitted
S1CON.0 (RI1)
S1CON.1 (TI1)
Timer 0
overflow occurred _{TCON.5 (TF0)}
XPULSE
CE detected zero
crossing
EX_XPULSE
Y P U L S E ^{C E d e t e c t e d s a g} EX_YPULSE
2
WPULSE
Wh pulse
EX_WPULSE
IE_XPULSE
IE_YPULSE
IE_WPULSE
VPULSE
VARh pulse
EX_VPULSE
IE_VPULSE
1
DIO
3 CE_BUSY
DIO status
changed
DIO_Rn
CE completed code run and
has new status information
TCON.3 (IE1)
Timer 1
overflow occurred _{TCON.7 (TF1)}
Logic and Polarity
Selection
IT0
>=1
>=1
I2FR
I3FR
Interrupt
Flags
IRCON.1
(IEX2)
IRCON.2
(IEX3)
4 VSTAT
EEPROM
5
SPI
Supply status changed
UART0
byte received
byte transmitted
BUSY fell
command
received
EX_EEX
EX_SPI
S0CON.0 (RI0)
S0CON.0 (TI0)
IE_EEX
IE_SPI
>=1
>=1
IRCON.3
(IEX4)
IRCON.4
(IEX5)
XFER_BUSY
accumulation
cycle completed
RTC_1S
every second
6
RTC_1M
every minute
RTC_T
alarm clock
EX_XFER
EX_RTC1S
EX_RTC1M
EX_RTCT
IE_XFER
IE_RTC1S
IE_RTC1M
IE_RTCT
>=1
IRCON.5
(IEX6)
Flag=1
means that
an interrupt
has occurred
and has not
been cleared
Figure 12: Interrupt Structure
Interrupt Enable
IEN0.7
(EAL)
IEN0.0
(EX0)
IEN2.0
(ES1)
IEN0.1
(ET0)
IEN1.1
(EX2)
IEN0.2
(EX1)
IEN1.2
(EX3)
IEN0.3
(ET1)
IEN1.3
(EX4)
IEN0.4
(ES0)
IEN1.4
(EX5)
IEN1.5
(EX6)
EX0 – EX6 are cleared
automaticallywhen the
hardware vectors to the
interrupt handler
Priority
Assignment
IP1.0/
IP0.0
IP1.1/
IP0.1
IP1.2/
IP0.2
IP1.3/
IP0.3
IP1.4/
IP0.4
IP1.5/
IP0.5
Interrupt
Vector
3/19/2010
46
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