ST72334J4 STMicroelectronics, ST72334J4 Datasheet - Page 34

• Manufacturer Part Number: ST72334J4
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY,ADC, 16-BIT TIMERS, SPI, SCI INTERFACES
• Manufacturer: STMicroelectronics

Specifications of ST72334J4

• Clock Sources: crystal/ceramic resonator oscillators or RC oscillators, external clock, backup Clock Security System
• 4 Power Saving Modes: Halt, Active-Halt, Wait and Slow
• Two 16-bit Timers With: 2 input captures (only one on timer A), 2 output compares (only one on timer A), External clock input on timer A, PWM and Pulse generator modes

ST72334J/N, ST72314J/N, ST72124J
INTERRUPTS (Cont’d)
Figure 18. Interrupt Processing Flowchart
Table 5. Interrupt mapping
Note 1. Valid for HALT and ACTIVE-HALT modes except for the MCC/RTC or CSS interrupt source which exits from
ACTIVE-HALT mode only.
34/153
N°
10
11
12
13
0
1
2
3
4
5
6
7
8
9
FROM RESET
Data-EEPROM Data EEPROM Interrupt
MCC/RTC
TIMER A
TIMER B
Source
RESET
Block
TRAP
CSS
SCI
SPI
ei0
ei1
ei2
ei3
Reset
Software Interrupt
Not used
Main Clock Controller Time Base Interrupt
or Clock Security System Interrupt
External Interrupt Port A3..0
External Interrupt Port F2..0
External Interrupt Port B3..0
External Interrupt Port B7..4
Not used
SPI Peripheral Interrupts
TIMER A Peripheral Interrupts
TIMER B Peripheral Interrupts
SCI Peripheral Interrupts
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?
IRET?
Y
Y
Register
MCCSR
EECSR
SPISR
SCISR
CRSR
Label
TASR
TBSR
N/A
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
Y
1)
FFECh-FFEDh
FFFCh-FFFDh
FFEEh-FFEFh
FFEAh-FFEBh
FFFEh-FFFFh
FFFAh-FFFBh
FFE8h-FFE9h
FFE4h-FFE5h
FFE2h-FFE3h
FFE0h-FFE1h
FFF8h-FFF9h
FFF6h-FFF7h
FFF4h-FFF5h
FFF2h-FFF3h
FFF0h-FFF1h
FFE6h-FFE7h
Address
Vector