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Need help for mempry cards

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mk3

mk3

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sle4442

I'm trying to use an Infineon/Siemens SLE4442 memory card in an embedded project.

As I can read only '1's can someone tell me what I must expect reading after a reset, as ATR bytes? I'm following the reset and read procedure as in datasheet, driving the card sync mode, and read every bit 1 in the first bytes... :cry: :cry:

What about reset/read timings? What if I move signals slowly as on the
datasheet? Can I do a sort of step by step communication? Any info or source example for any mcu? :?:

regards
 

sle4428 92 23

---- ResetCard ---
ISORST = 1
ISOSck = 0
ISOSck = 1
ISOSck = 0
ISORST = 0

-- Read Byte --- |
-- Read Byte --- | 4 Byte ATR
-- Read Byte --- |
-- Read Byte --- |

WriteByte(0x30); | Read Main MemoryCommand
WriteByte(0x00); | Adress
WriteByte(0x00); | No effect

-- Read Byte --- | Return Byte from Addres 0x00

More information in Siemens Data Sheet for SLE4432
 

Need help for memory cards

---- ResetCard ---
ISORST = 1
ISOSck = 0
ISOSck = 1
ISOSck = 0
ISORST = 0
Click to expand...

this is what I do

-- Read Byte --- |
-- Read Byte --- | 4 Byte ATR
-- Read Byte --- |
-- Read Byte --- |
Click to expand...

and then I read these bytes: but I read every bit '1' one. :cry: so I think probably something do not work well... How much strict are the timings listed in the datasheet? If I do things slower, can be this a problem? 8O

WriteByte(0x30); | Read Main MemoryCommand
WriteByte(0x00); | Adress
WriteByte(0x00); | No effect

-- Read Byte --- | Return Byte from Addres 0x00

More information in Siemens Data Sheet for SLE4432
Click to expand...

Thank you for answering. bye
 

Hi MK3....

i worked about sle4442 and sle4428 memory card programming. What did u do?
i can help u...?

Added after 1 minutes:

U must see "92 23 10 91 "as 4 byte for SLE4428 cards.....
 

thank you for your help offer. I solved my problem time ago: it was related to out of tolerance power supply voltage...

bye!
 

4TheHungry:

You can help me with verify/write to SLE 4428 smart card?

On small example.

WBR
 

hi,

look at :


Fire in the Wire :idea:
 

we have a reader which can do all process by itself with SLE4422, you only need to use T=0 command with cards
 

hi,

Who We ?

Fire in the Wire :idea:
 

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