ST72321AR6-Auto STMicroelectronics, ST72321AR6-Auto Datasheet - Page 53

• Manufacturer Part Number: ST72321AR6-Auto
• Description: 8-bit MCU for automotive with 32 Kbyte Flash, 10-bit ADC, timers, SPI, SCI and I2C interfaces
• Manufacturer: STMicroelectronics

Specifications of ST72321AR6-Auto

• Hdflash Endurance: 100 cycles, data retention 20 years
• Clock Sources: crystal/ceramic resonator oscillators, internal RC oscillator and bypass for external clock
• 4 Power Saving Modes: Halt, Active Halt, Wait and Slow

ST72321xx-Auto
Figure 20. Nested interrupt management
7.5
7.5.1
11 / 10
Interrupt register description
CPU CC register interrupt bits
Table 16.
These two bits indicate the current interrupt software priority (see
set/cleared by hardware when entering in interrupt. The loaded value is given by the
corresponding bits in the interrupt software priority registers (ISPRx).
They can be also set/cleared by software with the RIM, SIM, HALT, WFI, IRET and
PUSH/POP instructions (see
MAIN
CPU CC
RIM
Bit
5
3
7
1
IT2
CPU CC register interrupt bits description
IT1
6
1
Name
I1
I0
IT4
TRAP
RW
I1
5
Interrupt Software Priority 1
Interrupt Software Priority 0
Table 19: Interrupt dedicated instruction
Doc ID 13829 Rev 1
IT4
IT0
RW
H
4
IT3
IT1
RW
I0
3
IT2
Function
10
SOFTWARE
PRIORITY
LEVEL
MAIN
RW
N
2
Reset value: 111x 1010 (xAh)
Table
set).
3
3
2
1
3
3
3/0
17) and are
RW
1
Z
I1
1 1
1 1
0 0
0 1
1 1
1 1
Interrupts
RW
I0
C
0
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