STC89C54RD 판매점

CONTENTS

Chapter 1 Introduction......................................................................4

1.1 Features................................................................................................. 4

1.2 Block diagram....................................................................................... 5

1.3 Pin Configurations .............................................................................. 6

1.4 Pin Descriptions.................................................................................... 7

1.5 Pin Package Drawings.......................................................................... 8

Chapter 2 POWER MANAGENMENT, RESET......................... 11

2.1 Power Management ........................................................................... 11

2.1.1 Idle Mode.....................................................................................................11

2.1.2 Power Down (PD) Mode.............................................................................12

2.2 RESET Control................................................................................... 16

2.2.1 Reset pin.......................................................................................................16

2.2.2 Power-On Reset (POR). ..............................................................................17

ited2.2.3 Watch-Dog-Timer.......................................................................................17

2.2.4 Software RESET.........................................................................................20

Lim2.2.5 MAX810 power-on-reset delay..................................................................20

Chapter 3 Memory Organization....................................................21

CU3.1 Program Memory............................................................................... 21

3.2 Data Memory...................................................................................... 22

M3.2.1 On-chip Scratch-Pad RAM........................................................................22

3.2.2 Auxiliary RAM............................................................................................22

STC3.2.3 External RAM.............................................................................................22

3.2.4 Special Function Register for RAM..........................................................23

Chapter 4 Configurable I/O Ports Configurations............................ 29

4.1 Quasi-bidirectional I/O....................................................................... 29

4.2 Push-pull Output................................................................................. 30

4.3 Input-only Mode.................................................................................. 30

4.4 Open-drain Output.............................................................................. 30

Chapter 5 Instruction System..........................................................31

5.1 Special Function Registers................................................................. 31

5.2 Addressing Modes............................................................................... 36

5.3 Instruction Set Summary................................................................... 37

5.4 Instruction Definitions....................................................................... 41

STC89C54RD 반도체 회로 부품 판매점