User Manual
681
Rev. 1.1
2019-03-18
TLE984xQX
Microcontroller with LIN and Power Switches for Automotive Applications
Measurement Unit
22.3
8 Bit - 10 Channel ADC Core
The 8 Bit ADC Core operates at the VDDC Supply Voltage. This enables the user to operate the measurement
system down to reset threshold. The ADC can also be operated independently form the DPP unit. This enables
the user to build up a software controlled measurement cycle. The main features of the 8 Bit ADC core are
listed below.
Module Features
• Conversion time = 15 system clock cycles.
• programmable sampling time (4 to 22 MI_CLK cycles, default: 12)
• Scalable clock frequency from 10 - 30 MHz.
The next chapter shows the channel allocation of the 8 Bit ADC Core.
22.3.1
8 Bit ADC Channel Allocation
The allocation of the 7 Channels of ADC2 is sketched below:
Figure 184 8 Bit ADC (ADC2) Channel Allocation
• VS Pin Voltage Measurement.
• VDDEXT Pin Voltage Measurement.
• VDDP Pin Voltage Measurement.
• VDDC Pin Voltage Measurement.
• ADC2 Reference Voltage Check (VBG).
• Low Side Temperature Measurement (T
j
).
• Power Management Unit Temperature Measurement (T
j
).
MUX
VS
VBG
VDDC
Temperature Sensor Low Side
Central Temperature Sensor
CH5
CH4
CH3
CH2
CH1
CH0
VREF
V
BG
A D
VREF
8
CH6
VDDP
VDDEXT
8 Bit ADC