AT88SC0404CA-MJTG Atmel, AT88SC0404CA-MJTG Datasheet - Page 31

• Manufacturer Part Number: AT88SC0404CA-MJTG
• Description: CRYPTOMEM 4KBIT 4 ZONE MOD J TWI
• Manufacturer: Atmel
• Series: CryptoMemory®r

Specifications of AT88SC0404CA-MJTG

• Format - Memory: EEPROMs - Serial
• Memory Type: EEPROM
• Memory Size: 4K (512 x 8)
• Speed: 4MHz
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: 0°C ~ 70°C
• Package / Case: M2 J, Smart Card Module
• Operating Temperature (max): 70C
• Operating Temperature (min): 0C
• Operating Temperature Classification: Commercial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

8.4.
30
Table 18. Minimum Delay for ACK Polling for each Command
Note:
Write User Zone
Random Read
Read User Zone
System WRITE
System READ
Verify CRYPTO
Verify Password
Acknowledge Polling
A STOP condition ends each command. Certain commands require an acknowledge polling sequence. Acknowledge
polling consists of sending a START condition followed by the command byte and determining if the device responds
with an ACK. If the device is not ready for the command it will not acknowledge and the sequence must be repeated
(start condition, command byte, check for ACK). The ACK indicates the operation has completed but gives no
indication of the success or failure of the command.
Read Commands: No ACK polling required.
Write Commands: ACK polling required except encrypted write commands. Any command may be used.
Set commands:
Verify commands: ACK polling required with B2 or B6 commands only.
The following table lists the specific requirements for ACK polling and the maximum expected delay before the device
will ACK indicating readiness for the next command.
Atmel AT88SC0104/0204/0404/0808/CA
Delays are based on operation at 25° C
Command Description
Normal
Normal with Anti-Tearing
Encrypted
Encrypted with Anti-Tearing
Write Config Zone
Write Fuses
Send Checksum
Send Checksum with Anti-Tearing
Set User Zone
Write Config Zone with Anti-Tearing
Set User Zone with Anti-Tearing
Read Config Zone
Read Fuse Byte
Read Checksum
Verify Authentication
Verify Encryption
Write Password
Read Password
No ACK polling required.
Command
$BA
$BA
$B0
$B0
$B0
$B0
$B1
$B2
$B4
$B4
$B4
$B4
$B4
$B4
$B4
$B6
$B6
$B6
$B8
$B8
Addr 1 Addr 2
addr
addr
addr
addr
addr
$0B
$0X
$1X
$0X
$1X
N/A
$00
$01
$02
$02
$03
$08
$00
$01
$02
fuse ID
zone
zone
addr
addr
addr
addr
addr
addr
addr
addr
N/A
$00
$00
$00
$00
$00
$00
$00
$00
N/A
$00
$02
$02
$00
$00
$01
$02
$10
$10
$03
$03
N
N
N
N
N
N
N
N
N
Required, any CMD
Required, any CMD
No, Send Checksum
No, Send Checksum
Not Required
Not Required
Required, any CMD
Required, any CMD
Required, any CMD
Required, any CMD
Not Required
Required, any CMD
Not Required
Not Required
Not Required
Note Required
Required; B2 or B6 only 10ms
Required; B2 or B6 only 10ms
Required; B2 or B6 only 10ms
Required; B2 or B6 only 10ms
ACK Polling CMD
8664C–CRYPT–01/10
Delay
5ms
20ms
0
0
0
5ms
5ms
5ms
20ms
0
20ms
0
0
0
0