ATAES132-MA3H-ER-T Atmel, ATAES132-MA3H-ER-T Datasheet - Page 138
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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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Appendix L. Power Management
L.1.
L.1.1.
L.1.2.
L.1.3.
L.1.4.
The ATAES132 contains several features which facilitate power management. This appendix describes the various power
states and features.
Power State Descriptions
The ATAES132 has three powered states, and the off state. Two low power states are available to reduce power consumption
when the system is not using the ATAES132.
Active State
The ATAES132 is in the active state after it has completed the power up process and is fully powered. The WIP status bit is 0b
when the ATAES132 is in the active state and waiting for a command. The WIP status bit is 1b when the ATAES132 is in the
active state and processing a command or performing an EEPROM write. (See Section G.1.2 for WIP Status Bit information)
The supply current of the ATAES132 in the active state is several milliamps. (See Section 9.3.1 for Icc specifications)
An ATAES132 in the Active State is capable of accepting a command immediately if the WIP Status Bit is 0b. The I
Specifications for the Active State are in Section 9.4.3. The SPI Timing Specifications for the Active State are in Section 9.4.4.
Standby State
ATAES132 can enter the Standby State in two ways: 1. The host can send a Sleep command to place ATAES132 into
Standby. 2. ATAES132 will automatically enter the Standby State at power up if configured to do so. (See Section L.2.1) The
Standby State preserves the ATAES132 volatile memory contents and the security state.
All eight Status Bits are 1b when ATAES132 is in the Standby State and during the wakeup process. (See Appendix G for
Status Bit information)
The supply current of ATAES132 in the Standby State is several microamps (See Section 9.3.1 for I
An ATAES132 in the Standby State is capable of reporting the device STATUS immediately, but cannot accept a command
until the Wakeup process is complete. The Timing Specifications for exiting the Standby State are in Section 9.4.2.
Sleep State
The ATAES132 can enter the sleep state in two ways:
The sleep state clears the ATAES132 volatile memory contents and the security state.
All eight status bits are 1b when the ATAES132 is in the sleep state and during the wakeup process. (See Appendix G for
Status Bit information)
The supply current of the ATAES132 in the standby state is less than one microamp. (See Section 9.3.1 for I
An ATAES132 in the sleep state is capable of reporting the device STATUS immediately, but cannot accept a command until
the wakeup process is complete. The timing specifications for exiting the sleep state are in Section 9.4.2.
Off State
When the ATAES132 device is unpowered or when V
the off state. A device in the off state cannot respond to any commands.
1.
4.
The host can send a sleep command to place the ATAES132 into standby
The ATAES132 will automatically enter the sleep state at power up if configured to do so. (See Section L.2.1)
CC
is significantly below the minimum V
Atmel ATAES132 Preliminary Datasheet
CC
voltage, then the device is in
SB
specifications)
8760A−CRYPTO−5/11
SB
specifications)
2
C Timing
138
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