Instruction/ maintenance manual of the product C51 Atmel
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C51 Microcontrollers Demo Board .............. .......... ......... ......... .............. .......... ......... .............. ..... User Gu ide.
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C 5 1 M ic r o c ont r ol l e r s D e mo B o a r d U s er G uide i 41 1 9 C–8051–3/03 T able of Contents Section 1 Introductio n .............. .......... ......... ......... .............. .......... ......... .............. .. 1-2 1.1 C51/C251 Su pport .
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Introduction C51 Micr ocontroll ers Demo Board Us er Guide 1-2 4119C–8051–3/03 Section 1 Introduction The C51/C2 51 Demo Board al lows easy e valuation of mo st of Atmel C51/C251 dev ices. The C51/C251 Demo Board can be powered using a simple 9V battery or using a 9V recharge able batt ery.
Introduction 1-3 C51 Microcontro llers Demo Board User Guide 4119C – 8051 – 3/03 1.3 Support Questions can be sent to: mcu@a tmel.com 1.4 Demo Board Features n An LC D Disp la y (2 line s of 16 ch.
Hardware Description C51 Micr ocontroll ers Demo Board Us er Guide 2-4 41 1 9 C– 8 0 5 1 – 3/03 Section 2 Hardware Description 2.1 Block Di agram Figure 2-1. Block Diagr am 2.2 Specif ications 2.3 Supported Microcontrollers Most Atm el C51 and C251 micr ocontrolle rs are supp orted.
Hardware Description 2-5 C51 Microcontro llers Demo Board User Guide 4 11 9 C–8051–3/03 2.4 Board Supply Considerations n Power c onnector J1 or battery c onnector J2 ma y be use d to power the board. n On J2 conn ector a rechargea ble battery or a non-r echargeabl e battery ma y be used .
Hardware Description C51 Micr ocontrollers De mo Board U ser Guide 2-6 41 1 9 C–8051–3/03 Figure 2-4. C51/C251 D emo Boar d Powered by J 2. 2.5 Board Layout n On-Of f – Switch es ON the power su pply . n Reset – Res ets the microc ont ro ller s.
Hardware Description 2-7 C51 Microcontro llers Demo Board User Guide 4 11 9 C–8051–3/03 Figure 2-5. C51/C251 D emo Boar d 2.6 J11 S w itches T able 1.
Hardware Description C51 Micr ocontrollers De mo Board U ser Guide 2-8 41 1 9 C–8051–3/03 T able 2. J9 Swit ches T able 3. J16 Sw itches Figure 2-6. Swit ch Conf iguratio n Socket an d Quartz Cr ystal T he C51/C251 Dem o Board provid es three di fferent sock ets for microc ontrollers , a PLCC44, a P LCC68 and a DIL24.
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Oper ation Mode C51 Micr ocontrollers De mo Board U ser Guide 3-10 41 1 9 C–8051–3/03 Section 3 Operation Mode 3.1 Flash Products 3.1.1 Switch Configuration To program th e on-chip F lash memor y, hardware configur ation of the chip should be the followin g: PSEN = 0, EA = 1 an d ALE = 1 or not conn ected.
Operat ion Mo de 3-11 C 51 Mic r ocont r ollers Demo Board User G u ide 4 11 9 C–8051–3/03 3.2 ISP Ex tern al Flash Memory Mode Extern al Flash memory might be program med using Windows hyper t erminal o r any ter- minal ab le to send HEX files in text mo de.
Oper ation Mode C51 Micr ocontrollers De mo Board U ser Guide 3-12 41 1 9 C–8051–3/03 Figure 3-3. Com Port Co nfiguration Figure 3-4. Termina l Window on Running ISP Turn on the C51/C251 Demo Board and then foll ow the instructions on the terminal screen and LCD display.
Operat ion Mo de 3-13 C 51 Mic r ocont r ollers Demo Board User G u ide 4 11 9 C–8051–3/03 Figure 3-5. Send HE X File in Text Mo de Figure 3-6. Use *.
Oper ation Mode C51 Micr ocontrollers De mo Board U ser Guide 3-14 41 1 9 C–8051–3/03 After the download of the HEX file, the program asks if you want to download another HEX file in the se cond zone of the external Flash me mory.
Operat ion Mo de 3-15 C 51 Mic r ocont r ollers Demo Board User G u ide 4 11 9 C–8051–3/03 Figure 3-8. C51 Mode (Non Page Mode) 3.3.2 C251 Mod e In C251 mode, the m icrocontrolle r can be used in Page Mode or Non Page Mode. For Non Pa ge Mode switch J8 must be in the same co nfigurati on as in C51 mode.
Bill of Material C51 Micr ocontrollers De mo Board U ser Guide 4-16 41 1 9 C–8051–3/03 Section 4 Bill of Material Refere nce Type Qty Comm ent C1- C28 POL_C APACITOR 4,7u F 2 CMS_T AJ_Packag e_B C.
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C51 Demo Board User Gu ide 5-18 R e v . 4 1 19 C–8051–3/03 Section 5 Schematics.
Schematic s 5-19 C51 Demo Board User Guide 4 11 9 C–8051–3/03.
Schematic s C51 Demo Board User Gu ide 5-20 41 1 9 C–8051–3/03.
Schematic s 5-21 C51 Demo Board User Guide 4 11 9 C–8051–3/03.
Schematic s C51 Demo Board User Gu ide 5-22 41 1 9 C–8051–3/03.
Schematic s 5-23 C51 Demo Board User Guide 4 11 9 C–8051–3/03.
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An important point after buying a device Atmel C51 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Atmel C51 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Atmel C51 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Atmel C51 you will learn all the available features of the product, as well as information on its operation. The information that you get Atmel C51 will certainly help you make a decision on the purchase.
If you already are a holder of Atmel C51, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Atmel C51.
However, one of the most important roles played by the user manual is to help in solving problems with Atmel C51. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Atmel C51 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
