ST7MC1/ST7MC2
LINSCI SERIAL COMMUNICATION INTERFACE (SCI Mode) (Cont’d)
9.5.6 Low Power Modes
9.5.7 Interrupts
Mode
WAIT
HALT
Description
No effect on SCI.
SCI interrupts cause the device to exit
from Wait mode.
SCI registers are frozen.
In Halt mode, the SCI stops transmit-
ting/receiving until Halt mode is exit-
ed.
Interrupt Event
Transmit Data Register
Empty
Transmission Com-
plete
Received Data Ready
to be Read
Overrun Error or LIN
Synch Error Detected
Idle Line Detected
Parity Error
LIN Header Detection
Event
Flag
Enable
Control
Bit
TDRE TIE
TC TCIE
RDRF
OR/
LHE
IDLE
PE
LHDF
RIE
ILIE
PIE
LHIE
Exit
from
Wait
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Exit
from
Halt
No
No
No
No
No
No
No
The SCI interrupt events are connected to the
same interrupt vector (see Interrupts chapter).
These events generate an interrupt if the corre-
sponding Enable Control Bit is set and the inter-
rupt mask in the CC register is reset (RIM instruc-
tion).
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