AT88SC0404CA-TU Atmel, AT88SC0404CA-TU Datasheet - Page 16
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AT88SC0404CA-TU
Manufacturer Part Number
AT88SC0404CA-TU
Description
Manufacturer
Atmel
Datasheet
1.AT88SC0404CA-TU.pdf
(22 pages)
Specifications of AT88SC0404CA-TU
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Pin Count
8
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Compliant
Figure 13-1. Synchronous 2-Wire Protocol
Note:
14. Asynchronous T = 0 Protocol
Figure 14-1. Asynchronous T = 0 Protocol (Gemplus Patent)
16
Five clock pulses must be sent before the first command is issued.
AT88SC0404CA [Preliminary]
CLK-SCL
CLK-SCL
I/O-SDA
I/O-SDA
RST
V cc
RST
V cc
This power-up sequence complies to ISO 7816-3 for a cold reset in smart card applications.
The device will respond with a 64-bit ATR code, including historical bytes to indicate the memory
density within the CryptoMemory family.
Once asynchronous mode has been selected, it is not possible to switch to synchronous mode
without first powering off the device.
– VCC goes high; RST, I/O (SDA) and CLK (SCL) are low.
– Set I/O (SDA) in receive mode.
– Provide a clock signal to CLK (SCL).
– RST goes high after 400 clock cycles.
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2
3
4
5
ATR
5203AS–CRYPT–6/08