ST7FOXK2 datasheet(29/226 Pages) STMICROELECTRONICS

Teilenummer	ST7FOXK2

Bauteilbeschribung	8-bit MCU with single voltage Flash memory, SPI, I²C, ADC, timers

PDF	226 Pages

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Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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29 / 226 page

ST7FOXF1, ST7FOXK1, ST7FOXK2

Central processing unit

29/226

Central processing unit

5.1

Introduction

This CPU has a full 8-bit architecture and contains six internal registers allowing efficient 8-

bit data manipulation.

5.2

Main features

●

63 basic instructions

●

Fast 8-bit by 8-bit multiply

●

17 main addressing modes

●

Two 8-bit index registers

●

16-bit stack pointer

●

Low power modes

●

Maskable hardware interrupts

●

Non-maskable software interrupt

5.3

CPU registers

The six CPU registers shown in Figure 7. They are not present in the memory mapping and

are accessed by specific instructions.

Figure 7.

CPU registers

ACCUMULATOR

X INDEX REGISTER

Y INDEX REGISTER

STACK POINTER

CONDITION CODE REGISTER

PROGRAM COUNTER

11 H I

N Z

RESET VALUE = RESET VECTOR @ FFFEh-FFFFh

PCH

PCL

RESET VALUE = STACK HIGHER ADDRESS

RESET VALUE = 1X

11X 1X X

RESET VALUE = XXh

X = Undefined Value

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