AT88SC1608-10PU-00 Atmel, AT88SC1608-10PU-00 Datasheet - Page 9

• Manufacturer Part Number: AT88SC1608-10PU-00
• Description: IC EEPROM 16KBIT 1MHZ 8DIP
• Manufacturer: Atmel
• Series: CryptoMemory®r

Specifications of AT88SC1608-10PU-00

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 16K (2K x 8)
• Speed: 1MHz
• Interface: Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10. Command Definitions and Protocols
Table 10-1.
10.1
0971H–SMEM–6/08
Read Configuration Zone
Write Configuration Zone
Set User Zone Address
Initialize Authentication
Verify Authentication
Set User Zone Address
Read User Zone
Write User Zone
Verify Password
Description
Device Commands
The authentication success is memorized and active as long as the chip is powered, unless a
new authentication is initialized or RST becomes active. If the new authentication request is not
validated, the card has lost its previous authentication and it should be presented again. Only
the last request is memorized.
The authentication verification protocol requires the host to perform an Initialize Authentication
command, followed by a Verify Authentication command.
The password and authentication may be presented at any time and in any order. If the trials
limit has been reached, i.e., the 8 bits of the attempts counter have been written, the password
verification or authentication process will not be taken into account.
The communications protocol is based on the popular two-wire serial interface. Note that the
most significant bit is transmitted first.
Figure 10-1. Set User Zone Address
Note:
At power-on, no access to the user zones is allowed until the Set User Zone Address command
occurs. This command sets the three most significant bits of the byte address, corresponding to
the user zone address. This address stays valid until the host sends a new one and as long as
the chip is powered.
* = Don’t care bit
Code HEX
$B0
$B1
$B4
$B5
$B2
$B3
$B6
$B7
S
T
A
R
T
Command
b7
1
1
1
1
1
1
1
1
b6
Chip Select
0
0
0
0
0
0
0
0
A
C
K
* * * * *
b5
1
1
1
1
1
1
1
1
Fuses Index
b4
Command
1
1
1
1
1
1
1
1
A
10
A
9
A
8
b3
A
C
K
0
0
0
0
0
0
0
0
S
T
O
P
AT88SC1608
b2
Instruction
0
0
1
1
0
0
1
1
b1
0
0
0
1
1
0
1
1
b0
0
1
0
1
0
1
0
1
9