STM32U073RCT6 datasheet(102/146 Pages) STMICROELECTRONICS

102 / 146 page

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IDDA(OPAMP)(2)

OPAMP consumption from

VDDA

Low-power

mode

no Load, quiescent mode

µA

100

1. The temperature range is limited to 0 °C-125 °C when VDDA is below 2 V

2. Evaluated by characterization, not tested in production.

3. Mostly I/O leakage, when used in analog mode. Refer to Ilkg parameter in Table 64. I/O static characteristics.

4. R2 is the internal resistance between OPAMP output and OPAMP inverting input. R1 is the internal resistance between OPAMP inverting

input and ground. The PGA gain =1+R2/R1

6.3.25

LCD controller characteristics

The devices embed a built-in step-up converter to provide a constant LCD reference voltage independently from

the VDD voltage. An external capacitor Cext must be connected to the VLCD pin to decouple this converter.

Table 81. LCD controller characteristics

Specified by design, not tested in production.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VLCD

LCD external voltage

3.6

VLCD0

LCD internal reference voltage 0

2.62

VLCD1

LCD internal reference voltage 1

2.76

VLCD2

LCD internal reference voltage 2

2.89

VLCD3

LCD internal reference voltage 3

3.04

VLCD4

LCD internal reference voltage 4

3.19

VLCD5

LCD internal reference voltage 5

3.32

VLCD6

LCD internal reference voltage 6

3.46

VLCD7

LCD internal reference voltage 7

3.62

Cext

VLCD external capacitance

Buffer OFF

(BUFEN=0 is LCD_CR register)

0.2

μF

Buffer ON

(BUFEN=1 is LCD_CR register)

ILCD(1)

Supply current from VDD at VDD = 2.2 V

Buffer OFF

(BUFEN=0 is LCD_CR register)

μA

Supply current from VDD at VDD = 3.0 V

Buffer OFF

(BUFEN=0 is LCD_CR register)

1.5

IVLCD

Supply current from VLCD (VLCD = 3 V)

Buffer OFF

(BUFFEN = 0, PON = 0)

0.5

μA

Buffer ON

(BUFFEN = 1, 1/2 Bias)

0.6

Buffer ON

(BUFFEN = 1, 1/3 Bias)

0.8

Buffer ON

(BUFFEN = 1, 1/4 Bias)

RHN

Total High Resistor value for Low drive resistive network

5.5

MΩ

RLN

Total Low Resistor value for High drive resistive network

240

kΩ

V44

Segment/Common highest level voltage

VLCD

V34

Segment/Common 3/4 level voltage

3/4 VLCD

V23

Segment/Common 2/3 level voltage

2/3 VLCD

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 102/146

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