ST72215G2 STMicroelectronics, ST72215G2 Datasheet - Page 26
ST72215G2
Manufacturer Part Number
ST72215G2
Description
8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY,ADC, 16-BIT TIMERS, SPI, I2C INTERFACES
Manufacturer
STMicroelectronics
Datasheet
1.ST72104G2.pdf
(141 pages)
Specifications of ST72215G2
Emulation Voltage
5.5 V
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ST72104Gx, ST72215Gx, ST72216Gx, ST72254Gx
INTERRUPTS (Cont’d)
Figure 15. Interrupt Processing Flowchart
Table 5. Interrupt Mapping
Note
1. Configurable by option byte.
26/141
N°
10
11
12
13
0
1
2
3
4
5
6
7
8
9
FROM RESET
TIMER A
TIMER B
Source
RESET
Block
TRAP
CSS
SPI
ei0
ei1
I²C
Reset
Software Interrupt
External Interrupt Port A7..0 (C5..0
External Interrupt Port B7..0 (C5..0
Clock Security System Interrupt
SPI Peripheral Interrupts
TIMER A Peripheral Interrupts
Not used
TIMER B Peripheral Interrupts
Not used
Not used
Not used
Not used
I²C Peripheral Interrupt
Not Used
Not Used
EXECUTE INSTRUCTION
Description
RESTORE PC, X, A, CC FROM STACK
THIS CLEARS I BIT BY DEFAULT
FETCH NEXT INSTRUCTION
N
I BIT SET?
1
1
)
)
IRET?
Y
Y
Register
I2CSRx
SPISR
CRSR
Label
TASR
TBSR
N/A
N
LOAD PC FROM INTERRUPT VECTOR
Priority
Highest
Lowest
Priority
Priority
Order
N
STACK PC, X, A, CC
INTERRUPT
PENDING?
SET I BIT
HALT
from
Exit
yes
yes
no
no
no
no
Y
FFECh-FFEDh
FFFCh-FFFDh
FFEEh-FFEFh
FFEAh-FFEBh
FFFEh-FFFFh
FFFAh-FFFBh
FFE8h-FFE9h
FFE6h-FFE7h
FFE4h-FFE5h
FFE2h-FFE3h
FFE0h-FFE1h
FFF8h-FFF9h
FFF6h-FFF7h
FFF4h-FFF5h
FFF2h-FFF3h
FFF0h-FFF1h
Address
Vector
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