SHARP 28JS75E
Manual de Servicio

 

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LEVEL CONVERTER



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1 2

IC1 MAX 3222 CPN
/EN C1+ V+ C1C2+ C2VT2OUT R2IN /SHDN 18 VCC GND
17 16 C5 470nF

 +] 0 GLJLWDO PRGXOH
3:%  1

C2 470nF

C1 470nF

3 4

T1OUT 15 R1IN
14

3 . 2 . 5 .



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5 C3 470nF C4 470nF
.

6 7 8 9

R1OUT 13 T1IN 12 T2IN 11 R2OUT 10

4 3 2 1 3.3VSTBY

CN1 DB9

. . .

 9 SRZHU VXSSO\

CN2 GN0442BM

Figure 18: Block diagram showing the hardware needed to use Tiny M2Flash.

Figure 19: Level Converter Schematic Diagram

In order to make the M2 start in the bootstrap loader mode (which is needed to work with Tiny M2Flash), pin 3 of connector YB must be connected to ground at the moment of resetting the digital module (connecting the power to the module makes it reset). It may also stay connected to ground during the whole programming process, if desired. Software The program is composed of two files: One �.exe� and one �.obj� file. The first one contains the MS Windows code that runs in the PC. The second one contains the machine code that runs in the M2 microcontroller. The �.obj� file must be moved/copied to �C:\� (there is where the program looks for it.) The program writes into the flash memory the information

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