AT88SC0404C-Y4I Atmel, AT88SC0404C-Y4I Datasheet - Page 28
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AT88SC0404C-Y4I
Manufacturer Part Number
AT88SC0404C-Y4I
Description
Manufacturer
Atmel
Datasheet
1.AT88SC0404C-Y4I.pdf
(66 pages)
Specifications of AT88SC0404C-Y4I
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Mounting
Surface Mount
Pin Count
8
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Not Compliant
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7.
7.1.
5211C–SMIC–01/10
Atmel AT88SC0104/0204/0404/0808/1616/3216/6416/12816/25616C
Synchronous Protocol
Communication with the Atmel
Atmel AT24Cxxx Serial EEPROM devices using a two-wire protocol (TWI). Basic command structure and timing are the
same however a significant difference exists when reading the CryptoMemory device that will be described below.
Start-up Sequence
When first powering up the device, five pulses are required on CLK-SCL for reading of internal registers. This may be
accomplished by sending one full command byte to the device. The device will not respond but will then be ready to
respond to the next correct command sequence.
• Power-up V
• External pull-up resistor pulls I/O-SDA high with V
• After stable V
• CLK-SCL and I/O-SDA may be driven.
Figure 9. Start-up Sequence
CLK-SCL
I/O-SDA
V cc
CC
CC
, 5 pulses are applied to CLK-SCL
1
®
CryptoMemory
2
3
®
using the synchronous protocol is very similar to communication with
4
CC
5
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