73s1210f68im Maxim Integrated Products, Inc., 73s1210f68im Datasheet - Page 33

• Manufacturer Part Number: 73s1210f68im
• Description: Self-contained Smart Card Reader With Pinpad And Power Management
• Manufacturer: Maxim Integrated Products, Inc.

DS_1210F_001
1.7.5
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 (TCON, IRCON, and SCON). Each interrupt requested by the
corresponding flag can be individually enabled or disabled by the enable bits in SFRs IEN0, IEN1, and
IEN2. Some of the 10 sources are multiplexed in order to expand the number of interrupt sources.
These are 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 73S1210F, for example the USR I/O, smart card interface, analog comparators, etc. The external
interrupt configuration is shown in Figure 9.
Rev. 1.4
Interrupts
VCC_OK
Card_Det
USR0
USR1
USR2
USR3
USR4
USR5
USR6
USR7
KeyPad
Serial
Serial
INT3
Analog
Ch 0
Ch 1
INT2
Comp
I
2
VccCTL
CRDCtl
C
Figure 9: External Interrupt Configuration
Pads
Pads
USR
INT
+
VDD_Fault
Card Event
VCC_TMR
USR
USR
Int
Ctl
Wait Timeout
USR
Int
Ctl
Ctl
USR
Int
Ctl
Int
TX_Event
RX_Error
TX_Error
Tx_Sent
RxData
INT5
INT6
PDMUXCtl
Ctl
Ctl
SCInt
when PWRDN bit is set
During STOP, IDLE
+
SCIE
Delay
0
1
+
t0
int4
int5
int6
SerChan 0 int
SerChan 1 int
int0
t1
int1
int2
int3
Clear PWRDN bit
CORE
MPU
73S1210F Data Sheet
33