ATAES132-MA3H-ER-T Atmel, ATAES132-MA3H-ER-T Datasheet - Page 92
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ATAES132-MA3H-ER-T
Manufacturer Part Number
ATAES132-MA3H-ER-T
Description
EEPROM AES 32Kbit (MA3) I2C
Manufacturer
Atmel
Datasheet
1.ATAES132-SH-EQ.pdf
(166 pages)
Specifications of ATAES132-MA3H-ER-T
Rohs
yes
Maximum Clock Frequency
1 MHz
Operating Supply Voltage
6 V
Maximum Operating Temperature
- 40 C to + 85 C
Mounting Style
SMD/SMT
Package / Case
UDFN-8
Interface Type
I2C
Factory Pack Quantity
5000
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Table E-20. Definition of the ZoneConfig register bits
Note:
CounterConfig Field
AuthRead
AuthWrite
EncRead
EncWrite
WriteMode
UseSerial
UseSmall
ReadID
AuthID
Reserved
WriteID
ReadOnly
1.
do not affect the SPI or I
Most changes to the ZoneConfig registers take effect immediately. Changes to the AuthRead and EncRead bits
Byte
0
0
0
0
0
0
0
1
1
2
2
3
4 to 5
0 to 3
4 to 7
0 to 3
4 to 7
0 to 7
Bit
0
1
2
3
6
7
2
C read command until the next reset or power up.
Description
If 1b, then authentication is required to read data
If 0b, then authentication is not required to read data
If 1b, then authentication is required to write data
If 0b, then authentication is not required to write data
If 1b, then encryption is required to read data.
If 0b, then encryption is not required to read data
If 1b, then encryption is required to write data
If 0b, then encryption is not required to write data
If 00b, then this zone is permanently read/write
If 01b, then this zone is permanently read-only
If 10b, then the ReadOnly byte determines if writes are permitted
If 11b, then the ReadOnly byte determines if writes are permitted and the lock
If UseSerial = 1b and EncWrite = 1b, then the SerialNum must be included in
If UseSmall = 1b and EncWrite = 1b, the first 4 bytes of SmallZone must be
KeyID which is used to encrypt data read from this zone
The same key is used to generate the MAC
KeyID which is used for inbound authentication before access is permitted
Reserved for future use. All bits must be 0b
KeyID which is used to decrypt data written to this zone
The same key is used to verify the MAC
The contents of this byte are ignored unless WriteMode contains 10b or 11b
If 0x55, then the user zone is read/write
If any other value, then the user zone is read-only
This byte can be updated after the configuration memory is locked by using
command must include an authenticating MAC calculated using the
KeyID stored in ZoneConfig[UZ].WriteID.
EncWrite operations. If EncWrite = 0b, then this bit is ignored.
included in EncWrite operations. If EncWrite = 0b, then this bit is
ignored.
the lock command (See Section 7.19.)
(1)
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
92
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