ST7DALIF2 STMicroelectronics, ST7DALIF2 Datasheet - Page 28

• 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)
8
8.1
8.2
8.3
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Central processing unit (CPU)
Introduction
This CPU has a full 8-bit architecture and contains six internal registers allowing efficient 8-
bit data manipulation.
Main features
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CPU registers
The six CPU registers shown in
accessed by specific instructions.
Figure 9.
Reset value = stack higher address
Reset value = reset vector @ FFFEh-FFFFh
15
15
Enable executing 63 basic instructions
Fast 8-bit by 8-bit multiply
17 main addressing modes (with indirect addressing mode)
Two 8-bit index registers
16-bit stack pointer
Low power Halt and Wait modes
Priority maskable hardware interrupts
Non-maskable software/hardware interrupts
PCH
Reset value = 1
CPU registers
8
8 7
Reset value = XXh
Reset value = XXh
Reset value = XXh
7
7
7
7
1
7
1 1 X 1 X X
1 I1 H I0 N Z
Figure 9
PCL
are not present in the memory mapping and are
0
0
0
0
0
C
X
0
Accumulator
X index register
Y index register
Program counter
Condition code register
Stack pointer
X = undefined value
ST7DALIF2