ST72321M9 STMicroelectronics, ST72321M9 Datasheet - Page 104
ST72321M9
Manufacturer Part Number
ST72321M9
Description
8-bit MCU
Manufacturer
STMicroelectronics
Datasheet
1.ST72321M9.pdf
(175 pages)
Specifications of ST72321M9
Hdflash Endurance
100 cycles, data retention
Clock Sources
crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
Four Power Saving Modes
Halt, Active-Halt,Wait and Slow
Main Clock Controller With
Real time base, Beep and Clock-out capabilities
Two 16-bit Timers With
2 input captures, 2 output compares, external clock input on one timer, PWM and pulse generator modes
8-bit Pwm Auto-reload Timer With
2 input captures, 4 PWM outputs, output compare and time base interrupt, external clock with event detector
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ST72321M6 ST72321M9
SERIAL COMMUNICATIONS INTERFACE (Cont’d)
9.6.5 Low Power Modes
104/175
Mode
HALT
WAIT
No effect on SCI.
SCI interrupts cause the device to exit from
Wait mode.
SCI registers are frozen.
In Halt mode, the SCI stops transmitting/re-
ceiving until Halt mode is exited.
Description
9.6.6 Interrupts
The SCI interrupt events are connected to the
same interrupt vector.
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).
Transmit Data Register
Empty
Transmission Com-
plete
Received Data Ready
to be Read
Overrun Error Detect-
ed
Idle Line Detected
Parity Error
Interrupt Event
RDRF
Event
TDRE
IDLE
Flag
OR
TC
PE
Control
Enable
TCIE
ILIE
RIE
PIE
TIE
Bit
from
Wait
Exit
Yes
Yes
Yes
Yes
Yes
Yes
from
Exit
Halt
No
No
No
No
No
No
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