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73S1209F Data Sheet
DS_1209F_004
1.7.3 Interrupts
The 80515 core provides 10 interrupt sources with four priority levels. Each source has its own
request
flag(s) located in a special function register (
). Each interrupt requested by the
corresponding flag can be individually enabled or disabled by the enable bits in SFRs
. Some of the 10 sources are multiplexed in order to expand the number of interrupt sources.
These will be described in more detail in the respective sections.
. Some of the 10 sources are multiplexed in order to expand the number of interrupt sources.
These will be described in more detail in the respective sections.
External interrupts are the interrupts external to the 80515 core, i.e. signals that originate in other parts of
the 73S1209F, for example the USR I/O, smart card interface, analog comparators, etc. The external
interrupt configuration is shown in Figure 8.
External interrupts are the interrupts external to the 80515 core, i.e. signals that originate in other parts of
the 73S1209F, for example the USR I/O, smart card interface, analog comparators, etc. The external
interrupt configuration is shown in Figure 8.
USR
Int
Ctl
USR
Int
Ctl
USR
Int
Ctl
SCInt
Wait Timeout
Card Event
RxData
TX_Event
Tx_Sent
TX_Error
RX_Error
Card_Det
VCC_OK
CRDCtl
VccCTL
+
SCIE
VCC_TMR
Analog
Comp
KeyPad
I
2
C
USR
Int
Ctl
t0
t1
int0
int1
USR
Pads
USR0
USR7
USR6
USR5
USR4
USR3
USR2
USR1
INT2
INT3
INT
Pads
int2
int3
Serial
Ch 0
Serial
Ch 1
SerChan 0 int
SerChan 1 int
int4
INT5
Ctl
INT6
Ctl
int5
int6
+
During STOP, IDLE
when PWRDN bit is set
MPU
CORE
VDD_Fault
+
Delay
Clear PWRDN bit
PDMUXCtl
1
0
Figure 8: External Interrupt Configuration
32
Rev.
1.2