ST72C334J2B6 STMicroelectronics, ST72C334J2B6 Datasheet - Page 34

• Manufacturer Part Number: ST72C334J2B6
• Description: 8-bit Microcontrollers - MCU Flash 8K SPI/SCI
• Manufacturer: STMicroelectronics

Specifications of ST72C334J2B6

• Product Category: 8-bit Microcontrollers - MCU
• Core: ST7
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 8 MHz
• Program Memory Size: 8 KB
• Data Ram Size: 384 B
• On-chip Adc: Yes
• Operating Supply Voltage: 3.2 V to 5.5 V
• Package / Case: SDIP-42
• Mounting Style: Through Hole
• A/d Bit Size: 8 bit
• A/d Channels Available: 8
• Data Rom Size: 256 B
• Interface Type: SCI, SPI
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 32
• Number Of Timers: 4 bit
• Program Memory Type: Flash
• Factory Pack Quantity: 13
• Supply Voltage - Max: 5 V
• Supply Voltage - Min: 3.2 V

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