ATAES132-SH-ER Atmel, ATAES132-SH-ER Datasheet - Page 66
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ATAES132-SH-ER
Manufacturer Part Number
ATAES132-SH-ER
Description
EEPROM AES 32Kbit EE I2C
Manufacturer
Atmel
Datasheet
1.ATAES132-SH-EQ.pdf
(166 pages)
Specifications of ATAES132-SH-ER
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
SOIC-8
Interface Type
I2C
Factory Pack Quantity
2300
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7.25.
TempSense Command
The TempSense command activates and reads the die temperature sensor. The temperature sensor is powered on while the
command is being processed and then powered off to minimize power consumption. The temperature sensor specifications
are in Table 9-8.
This command returns two 16 bit numbers, T
code. The actual die temperature is calculated using a formula which is dependent upon the sensor calibration procedure.
The TempCal register indicates the sensor calibration procedure used to generate the TempOffset register value (see Section
E.2.17 and E.2.18). The default value of TempCal is 0x00, which indicates that the TempOffset is based on characterization.
When TempCal = 0x00 calculate the die temperature in degrees Celsius using the following formula:
The T
The ATAES132 devices with a calibrated temperature sensor are available at additional cost. Contact Atmel for the die
temperature formula for calibrated temperature sensors.
Table 7-71. Input parameters
Table 7-72. Output parameters
Note:
The command and response packet is transmitted as a block beginning with the count and ending with a packet checksum.
This block format is described in Section 6.1.
Opcode
Mode
Param1
Param2
Data
Name
ReturnCode
TempCodeH
TempCodeL
OFFSET
T
1.
DIE
value is stored in the first two bytes of the TempOffset register in the configuration memory. (see Section E.2.18)
=1.65* (T
In the event of a temperature sensor timeout error, a ReturnCode = 0x90 will be output along with the
TempCodeH, and TempCodeL data fields. The TempCodeH and TempCodeL values are invalid when this error
occurs. For any other error, only the ReturnCode value will be returned.
Name
TempSense
Mode
Zero
Zero
-
(Bytes)
Size
1
2
2
HIGH –
T
LOW
Notes
Upon success, 0x00 will be returned. Any command execution or validation failure generates a
non-zero error code
Temperature code T
Temperature code T
) + 67.2 - T
(Bytes)
Size
1
1
2
2
0
OFFSET
HIGH &
Notes
0x0E
Must be 0x00
Always 0x0000
Always 0x0000
(1)
HIGH
LOW
T
, per Section 6.3.
LOW
. The difference between the two returned values is the temperature
Atmel ATAES132 Preliminary Datasheet
8760A−CRYPTO−5/11
66
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