AT88SC0808CA-SU Atmel, AT88SC0808CA-SU Datasheet - Page 15

• Manufacturer Part Number: AT88SC0808CA-SU
• Description: IC EEPROM 8KBIT 4MHZ 8SOIC
• Manufacturer: Atmel
• Series: CryptoMemory®r

Specifications of AT88SC0808CA-SU

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 8K (1K x 8)
• Speed: 4MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (3.9mm Width)
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Package Type: SOIC
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Industrial
• For Use With: AT88SC-SDK1 - KIT TUEMA DK CRYPTOMEM SMARTCARDAT88SC-DK1 - KIT DEV FOR AT88SCXXXXC FAMILY
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.
13.2.
5204ES–CRYPT–08/09
Protocol Selection
The AT88SC0808CA supports two different communication protocols.
Smartcard Applications:
Embedded Applications:
The power-up sequence determines establishes the communication protocol for use within that power cycle. Protocol
selection is allowed only during power-up.
Synchronous 2-Wire Serial Interface
The synchronous mode is the default mode after power up. This is due to the presence of an internal pull-up on RST.
For embedded applications using CryptoMemory in standard plastic packages, this is the only available communication
protocol.
Figure 13.
Note:
CLK-SCL
I/O-SDA
RST
V cc
Smartcard applications use ISO 7816-B protocol in asynchronous T = 0 mode for compatibility and
interoperability with industry standard smartcard readers.
A 2-wire serial interface provides fast and efficient connectivity with other logic devices or microcontrollers.
Power-up V
After stable V
Once synchronous mode has been selected, it is not possible to switch to asynchronous mode without first
powering off the device
Five clock pulses must be sent before the first command is issued.
Synchronous 2-Wire Protocol
CC
CC
, RST goes high also.
, SCL(CLK) and SDA(I/O) may be driven.
1
2
3
4
5
AT88SC0808CA
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