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