TQ Ma8XxS, User Manual

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User's Manual l TQMa8XxS UM 0101 l © 2022, TQ-Systems GmbH Page 15
3.2.2.4 EEPROM
For non-volatile storage of e.g. module characteristics or customer specific parameters, a serial EEPROM is optionally available,
which is connected to the I2C0 bus of the i.MX 8X via a level translator.
The write protection (WP) of the EEPROM is not available.
i.MX 8X EEPROM
MIPI_CSI0_GPIO0_00
MIPI_CSI0_GPIO0_01
SCL
SDA
Level-
Translator
Figure 7: Block diagram 24LC64T EEPROM
The following table shows details of the EEPROM.
Table 5: 24LC64T EEPROM
Manufacturer Part number Size Temperature range
Microchip 24LC64T-I/MC MCH 64 Kbit –45 °C to +85 °C
 The EEPROM has I 2 C address
0x50 / 101 0000b
3.2.2.5 SE97B EEPROM with temperature sensor
A serial EEPROM including temperature sensor, controlled by the I2C1 bus, is assembled.
The lower 128 bytes (address 00h to 7Fh) can be Permanent Write Protected (PWP) or Reversible Write Protected (RWP) by
software. The upper 128 bytes (address 80h to FFh) are not write protected and can be used for general purpose data storage.
The EEPROM also provides a temperature sensor to monitor the temperature of the TQMa8XxS.
The following table shows details of the SE97B EEPROM.
Table 6: SE97BT EEPROM
Manufacturer Part number Size Temperature range
NXP SE97B,547 2 × 128 bytes –45 °C to +85 °C

The device has the following I 2 C addresses:
o
EEPROM (normal):
0x53 / 101 0011b
o
EEPROM (Protection Command):
0x33 / 011 0011b
o
Temperature sensor:
0x1B / 001 1011b
The EEPROM with temperature sensor (D7) is assembled on the bottom side of the TQMa8XxS, see Figure 30.
The temperature sensor is connected to the I2C0 bus of the processor via a level translator.
The overtemperature output of the sensor is connected to the i.MX 8X ball QSPI0A_SS1#.
The following table shows details of the SE97B temperature sensor.
Table 7:
SE97B temperature sensor
Manufacturer Part number Resolution Accuracy Temperature range
NXP SE97B,547 11 bits Max. ±3 °C –40 °C to +125 °C