MCU. STC89C51RC Datasheet

STC89C51RC MCU. Datasheet pdf. Equivalent

Part STC89C51RC
Description MCU
Feature www.STCMCU.com Mobile:(86)13922809991 Tel:86-755-82948412 Fax:86-755-82905966 SSTTCC8899LCE5511D.
Manufacture STC MCU
Datasheet
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STC89Cxx series MCU STC89LExx series MCU Data Sheet CONTENT STC89C51RC Datasheet
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STC89C51RC
www.STCMCU.com
Mobile:(86)13922809991
Tel:86-755-82948412
Fax:86-755-82905966
SSTTCC8899LCE5511DRMRaCCCta/UR/RSDhD+Le+eismtseeirtrieeides.sMMCCUU
STC
STC MCU Limited
www.STCMCU.com
STC MCU Limited.
Update date: 2011-7-25
websitewww.STCMCU.com




STC89C51RC
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





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