S32K310 datasheet(79/136 Pages) NXP

79 / 136 page

Symbol

Description

Min

Typ

Max

Unit

Condition

Spec

Number

1. vdda is comparator HV supply and internally shorted to VDD_HV_A pin. vss is comparator ground

2. Difference at input > 200mV

3. Applied +/- (100 mV + VAHYST0/1/2/3 + max. of VAIO) around switch point

4. Applied +/- (30 mV + VAHYST0/1/2/3 + max. of VAIO) around switch point

5. Applied ± (100 mV + VAHYST0/1/2/3 ).

6. 1 LSB = (vrefh_cmp - vrefl_cmp) /256. vrefh_cmp and vrefl_cmp are comparator reference high and low

7. Calculation method used: Linear Regression Least Square Method

For Comparator IN signals adjacent to VDD_HV_A/VDD_HV_B/VSS or XTAL/EXTAL or switching pins cross coupling may

happen and hence hysteresis settings can be used to obtain the desired Comparator performance. Additionally an external

capacitor to ground (1nF) should be used to filter noise on input signal. Also source drive should not be weak (Signal with <50K

pull up/down is recommended).

For devices where the VDD_HV_B domain is present, LPCMP0 channels must only be selected/enabled when VDD_HV_A >=

VDD_HV_B. These channels must be disabled when VDD_HV_A goes below VDD_HV_B.

3.3

3.0

1.5

2.1

0.6

Hysteresis

(mV)

Vin level (V)

Junction Temp (°C)

VDD_HV_A (V)

HYSTCTR setting

0.3

1.2

2.4

2.7

0.9

1.8

3.3

Figure 34. Typical Hysteresis vs Vin level (VDD_HV_A = 3.3 V, High Speed Mode)

3.3

3.0

1.5

2.1

0.6

Hysteresis

(mV)

HYSTCTR setting

0.3

1.2

2.4

2.7

0.9

1.8

3.3

Vin level (V)

Junction Temp (°C)

VDD_HV_A (V)

Figure 35. Typical Hysteresis vs Vin level (VDD_HV_A = 3.3 V, Low Speed Mode)

NXP Semiconductors

Analog modules

S32K3xx Data Sheet, Rev. 8, 06/2023

Data Sheet: Technical Data

Preliminary Information for S32K3x8

79 / 136

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