st72324bk STMicroelectronics, st72324bk Datasheet - Page 34

• Manufacturer Part Number: st72324bk
• Description: 3 V/5 V Range 8-bit Mcu With 4/8 Kbyte Rom, 10-bit Adc, Four Timers And Spi
• Manufacturer: STMicroelectronics

Interrupts
6.5
6.5.1
34/167
Interrupt register description
CPU CC register interrupt bits
Reset value: 111x 1010 (xAh)
Bit 5, 3 = I1, I0 Software Interrupt Priority
Table 6.
1. TRAP and RESET events can interrupt a level 3 program.
Interrupt software priority
Level 0 (main)
Level 1
Level 2
Level 3 (= interrupt disable
These two bits indicate the current interrupt software priority as shown in
These two bits are 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 “Interrupt Dedicated Instruction Set” table).
7
1
Read only
Current interrupt software priority
1
(1)
)
I1
H
I0
Read/Write
Level
High
Low
N
I1
1
0
0
1
ST72323 ST72323L
Z
Table
I0
0
1
0
1
6.
C
0