C51 Microcontrollers Demo Board User Guide i
4119C–8051–3/03
Table of Contents
Section 1
Introduction ........................................................................................... 1-2
1.1 C51/C251 Support ....................................................................................1-2
1.2 Demo Board Features...............................................................................1-3
Section 2
Hardware Description ........................................................................... 2-4
2.1 Block Diagram...........................................................................................2-4
2.2 Specifications............................................................................................2-4
2.3 Supported Microcontrollers .......................................................................2-4
2.4 Board Supply Considerations....................................................................2-5
2.5 Board Layout.............................................................................................2-6
2.6 J11 Switches.............................................................................................2-7
Section 3
Operation Mode .................................................................................. 3-10
3.1 Flash Products ........................................................................................3-10
3.1.1 Switch Configuration.........................................................................3-10
3.1.2 Running ISP .....................................................................................3-10
3.2 ISP External Flash Memory Mode ..........................................................3-11
3.2.1 Hardware Configuration....................................................................3-11
3.2.2 Terminal Configuration .....................................................................3-11
3.2.3 ISP Operation ...................................................................................3-11
3.3 Demo Mode ............................................................................................3-14
3.3.1 C51 Mode .........................................................................................3-14
3.3.2 C251 Mode .......................................................................................3-15
Section 4
Bill of Material ..................................................................................... 4-16
Section 5
Schematics .........................................................................................5-18
