ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 30

• Manufacturer Part Number: ST7DALIF2
• Description: 8-BIT MCU WITH SINGLE VOLTAGE FLASH MEMORY, DATA EEPROM, ADC, TIMERS, SPI
• Manufacturer: STMicroelectronics

Specifications of ST7DALIF2

• 8 Kbytes Single Voltage Flash Program Memory With Read-out Protection, In-circuit Programming And In-application Programming (icp And Iap). 10k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• 256 Bytes Data Eeprom With Read-out Protection. 300k Write/erase Cycles Guaranteed, Data Retention: 20 years at 55°C.
• Clock Sources: Internal 1% RC oscillator, crystal/ceramic resonator or external clock
• Five Power Saving Modes: Halt, Active-Halt, Wait and Slow, Auto Wake Up From Halt

Central processing unit (CPU)
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Table 6.
Table 7.
Table 8.
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, IRET, HALT, WFI and PUSH/POP
instructions.
See
Level 0 (main)
Level 1
Level 2
Level 3 (= interrupt disable)
BIt Name
BIt Name
1
0
5
3
Section 10: Interrupts on page 45
I1
I0
C
Z
Zero (Arithmetic Management bit)
Carry/borrow
Software Interrupt Priority 1
Software Interrupt Priority 0
Arithmetic management bits (continued)
Software interrupt bits
Interrupt software priority selection
This bit is set and cleared by hardware. This bit indicates that the result of the last
arithmetic, logical or data manipulation is zero.
0: The result of the last operation is different from zero.
1: The result of the last operation is zero.
This bit is accessed by the JREQ and JRNE test instructions.
This bit is set and cleared by hardware and software. It indicates an overflow or an
underflow has occurred during the last arithmetic operation.
0: No overflow or underflow has occurred.
1: An overflow or underflow has occurred.
This bit is driven by the SCF and RCF instructions and tested by the JRC and JRNC
instructions. It is also affected by the ‘bit test and branch’, shift and rotate instructions.
The combination of the I1 and I0 bits determines the current interrupt software priority
(see
The combination of the I1 and I0 bits determines the current interrupt software priority
(see
Interrupt software priority
Table
Table
8).
8).
for more details.
Function
Function
Level
High
Low
I1
1
0
0
1
ST7DALIF2
I0
0
1
0
1