MMC Ready User Manual
Contents
1. All Mikroelektronika s development systems feature a large number of peripheral modules expanding microcontroller s range of application and making the process of program testing easier In addition to these modules it is also possible to use numerous additional modules linked to the development system through the I O port connectors Some of these additional modules can operate as stand alone devices without being connected to the microcontroller 7 MikroElektronika SOFTWARE AND HARDWARE SOLUTIONS FOR EMBEDDED WORLD waking ib si ple MMC Ready The MMC Ready additional board is used to read and write to SD memory cards It can also serve as a small development System as it features a 28 pin microcontroller PIC18F252 Key features On board microcontroller PIC18F252 External programmer is used for programming Low power consumption 5V DC power supply voltage Figure 1 MMC Ready additional board How to connect the board The MMC Ready additional board can be easily connected to a device or a microcontroller via pads CN1 and CN5 Next to each pad there is a designation indicating the microcontroller pin that it is connected to The PICFlash external programmer is used to program the microcontroller on the addititonal board It is connected to the board via a 2x5 connector CN2 Figure 2 How to use the board The program used to read SD memory cards is loaded into the microcontroller supplie2. C18F252 m m m m m FP2 ex e REGI 3 20mm 60 71mm 2 54mm uugg er WWE 6Y Figure 4 Dimensions of the MMC Ready board MikroElektronika a woso je sn JOe UOD o ejejiseu jou op sjesodoJd sseulsnq 10 SIUSLULUOD suonsenb Aue 9 Eu no Jl po dnsyu uov aouu mmm E w je 1exon INOA eoejd se jd uoneuuojui jeuonippe peau ius JO sjonpoid ino Jo ap YUM E 9ulos SMa Gh ase nod Jl woof 90 IUL MMM Je eusqow ino NEA sp ld slonpoud in inode aou wea oj fuem nof Jl Q THOM Q3GQ038W3 YO4 SNOIL TIOS 3HVMQHVH ANY 3HVM13OS
3. d on the additional board If needed it is also possible to load another program into the microcontroller by using the PICFlash external programmer When the microcontroller is programmed it is necessary to place jumpers over RB6 and RB7 pins on the CN2 connector Otherwise pins RB6 and RB7 will not be connected to pads More information on the MMC Ready additional board and examples for it may be found on our website at http www mikroe com eng products view 528 mmc ready board MikroElektronika Figure 2 MMC Ready additional board connected to a programmer VCC MMC vec RCA MISO 5 earpap f RCOIMMC CSR c2 luna T RCS MOSI an BePoc RC3 SCK EL EA VCC MMC CN3 R4 o MMC CARD 2K2 ze lt cs E amp LS 8 8 ES oe ge e a 5 RAO RA RA2 RA3 RA4 RAS RBO MMC CS RB1 RB2 RB3 RB4 ovcc ev mlm RB6 PGC RB7 PGD RCO MMC CS RC1 RC2 RC3 SCK RC4 MISO RC5 MOSI RC6 RC7 PIC18F252 2 Z is Lt o0 o 5 22 S RBO MMC CD x1 10MHz C4 c5 22pF 22pF Figure 3 MMC Ready additional board connection schematic NOD VCC MMC VCC 3 3 LD1 POWER R8 1K I2 M lt lt o o EE HE5 gEm e E m lt HE a g e E m 66 29mm i999999999999 MMC Ready BOARD mm ee MMS RS poner RBI RCS m eee 82 RB3 RB4 ucc GNO mis PI
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