STC89LE51RC 판매점

CONTENTS

Chapter 1. Introduction................................................................ 6

1.1 Features...................................................................................................6

1.2 Block diagram.........................................................................................7

1.3 Pin Configurations of STC89C51RC/RD+ series MCU........................8

1.3.1 Pin Configurations of STC89C51RC/RD+ series HD Version MCU....................8

1.3.2 Pin Configurations of STC89C51RC/RD+ series 90C Version MCU...................9

1.4 STC89C51RC/RD+ series Selection Table...........................................10

1.5 STC89C51RC/RD+ series Minimum Application System...................11

1.6 STC89C51RC/RD+ series Application Circuit for ISP........................12

1.7 Pin Descriptions....................................................................................14

ited1.8 Package Dimension Drawings..............................................................16

1.9 STC89C51RC/RD+ series MCU naming rules....................................20

Lim1.10 How to Identify 90C and HD version of STC89xx series MCU........21

1.11 Reduce the Electromagnetic Radiation of MCU Clock (EMI)...........22

CU— Three Measures..................................................................................................22

M1.12 Super Low Power Consumption — STC89xx Series MCU...............23

Chapter 2. Power Management and Reset................................ 24

STC2.1 Power Management Modes...................................................................24

2.1.1 Idle Mode.............................................................................................................25

2.1.2 Stop / Power Down (PD) Mode...........................................................................26

2.2 RESET Sources.....................................................................................32

2.2.1 Reset pin...............................................................................................................32

2.2.2 Software RESET..................................................................................................32

2.2.3 Power-On Reset (POR)........................................................................................33

2.2.4 Watch-Dog-Timer.................................................................................................33

2.2.5 Warm Boot and Cold Boot Reset.........................................................................37

Chapter 3. Memory Organization.............................................. 38

3.1 Program Memory..................................................................................38

3.2 Data Memory........................................................................................39

3.2.1 On-chip Scratch-Pad RAM..................................................................................39

3.2.2 Auxiliary RAM.....................................................................................................41

STC89LE51RC 반도체 회로 부품 판매점