Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Need help for mempry cards

Status
Not open for further replies.
mk3

mk3

Member level 2
Joined
Dec 31, 1999
Messages
42
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
298
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:
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top