I 2 C Bus - TQ-Systems TQMLX2160A Preliminary User's Manual

4.9.2 I C bus
2
The LX2160A provides up to six I
bus cannot be multiplexed to any other function.
1.8 V
LX2160A
Level Shifter
I2C1
1.8 V ↔ 3.3 V
Figure 10: Block diagram I
4.7 kΩ Pull-Ups at the I 2 C bus are assembled on the TQMLX2160A. More devices can be connected to the bus but then additional
external Pull-Ups may be required on account of the higher capacitive load.
Table 8: I C addresses
2
Device
24LC64 EEPROM
STM32 System Controller
PCF85063A RTC
SE050 Secure Element
Temperature sensor
SE97B EEPROM
EEPROM
Note: I C erratum A-010650
2
Please take note of NXP's I
Preliminary User's Manual l TQMLX2160A UM 0002 l © 2020, TQ-Systems GmbH
C buses. All I C devices on the TQMLX2160A are connected to the I2C1 bus. Therefore the I2C1
2 2
3.3 V
System
EEPROM
Controller
2 C bus 1 structure on TQMLX2160A
Function
0x50 / 101 0000b
0x11 / 001 0001b
0x51 / 101 0001b
0x48 / 100 1000b
0x1F / 001 1111b
0x57 / 101 0111b
0x37 / 011 0111b
2 C erratum A-010650 when using I
Temp
RTC
Sensor
7-bit address
–
Should not be altered
–
–
Access to temperature registers
R/W access in Normal Mode
R/W access in Protected Mode
2 C buses.
Module
Connector
I2C1_CPU
1.8 V
I2C1_MOD
3.3 V
TPM
Secure
Element
Remark
Page 13
Optional
external
Pull-Ups