71M6531D Datasheet, PDF (36/115 Pages) Teridian Semiconductor Corporation – Energy Meter IC

Data Sheet 71M6531D/F-71M6532D/F
FDS 6531/6532 005
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)
Logic and Polarity
Selection
IT0
>=1
Interrupt
Flags
SPI I/F
Timer 0
overflow occurred
IEN_SPI
TCON.5 (TF0)
SPI_FLAG
2
Flash ^{Write attempt, CE}
Write
busy
Collision CE code start,
flash write busy
EX_FWCOL
1
DIO
DIO status
changed
DIO_Rn
3 CE_BUSY
CE completed code run and
has new status information
IE_FWCOL0
IE_FWCOL1
TCON.3 (IE1)
Timer 1
overflow occurred _{TCON.7 (TF1)}
>=1
I2FR
IRCON.1
(IEX2)
I3FR
IRCON.2
(IEX3)
4 PLL OK
PLL status
changed
UART0
EX_PLL
byte received
byte transmitted
EEPROM
5
I2C
BUSY fell
command
received
XFER_BUSY
accumulation
cycle completed
6
RTC_1S
every second
NR_OVF
WDT near
overflow
EX_EEX
EX_SPI
EX_XFER
EX_RTC
IEN_NR_
WDOVF
MPU-external
sources
MPU-internal
sources
IE_PLLRISE
IE_PLLFALL
>=1
IRCON.3
(IEX4)
S0CON.0 (RI0)
S0CON.0 (TI0)
IE_EEX
IE_SPI
>=1
>=1
IRCON.4
(IEX5)
IE_XFER
IE_RTC
>=1
IRCON.5
(IEX6)
WD_NROVF_FLAG
Flag=1 means
that an inter-
rupt has oc-
curred and
has not been
cleared
Figure 8: 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
automatically when 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
2/2/2009
Interrupt
Vector
36
© 2005-2009 TERIDIAN Semiconductor Corporation
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