STM32WB55CC datasheet(142/165 Pages) STMICROELECTRONICS

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Electrical characteristics

STM32WB55xx

142/165

DS11929 Rev 3

6.3.27

Timer characteristics

The parameters given in the following tables are guaranteed by design. Refer to

Section 6.3.17: I/O port characteristics for details on the input/output alternate function

characteristics (output compare, input capture, external clock, PWM output).

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)

-1-

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

V12

Segment/Common 1/2 level voltage

1/2 VLCD

V13

Segment/Common 1/3 level voltage

1/3 VLCD

V14

Segment/Common 1/4 level voltage

1/4 VLCD

Segment/Common lowest level voltage

1. Guaranteed by design.

2. LCD enabled with 3 V internal step-up active, 1/8 duty, 1/4 bias, division ratio = 64, all pixels active, no LCD connected.

Table 85. LCD controller characteristics(1) (continued)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Table 86. TIMx(1) characteristics

Symbol

Parameter

Conditions

Min

Max

Unit

tres(TIM)

Timer resolution time

-1

tTIMxCLK

fTIMxCLK = 64 MHz

15.625

fEXT

Timer external clock frequency

on CH1 to CH4

-0

fTIMxCLK/2

MHz

fTIMxCLK = 64 MHz

ResTIM

Timer resolution

TIM1, TIM16, TIM17

bit

TIM2

tCOUNTER

16-bit counter clock period

65536

tTIMxCLK

fTIMxCLK = 64 MHz

0.015625

1024

µs

tMAX_COUNT

Maximum possible count with

32-bit counter

65536 × 65536

tTIMxCLK

fTIMxCLK = 64 MHz

67.10

1. TIMx, is used as a general term in which x stands for 1, 2, 16 or 17.

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