STM32L412RBI3PTR datasheet(155/192 Pages) STMICROELECTRONICS

155 / 192 page

DS12469 Rev 4

155/192

STM32L412xx

Electrical characteristics

163

6.3.22

VBAT monitoring characteristics

6.3.23

Timer characteristics

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

Refer to Section 6.3.14: I/O port characteristics for details on the input/output alternate

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

Table 84. VBAT monitoring characteristics

Symbol

Parameter

Min

Typ

Max

Unit

Resistor bridge for VBAT

-39

kΩ

QRatio on VBAT measurement

Er(1)

1. Guaranteed by design.

Error on Q

-10

tS_vbat(1)

ADC sampling time when reading the VBAT

µs

Table 85. VBAT charging characteristics

Symbol

Parameter Conditions

Min

Typ

Max

Unit

RBC

Battery

charging

resistor

VBRS = 0

kΩ

VBRS = 1

1.5

Table 86. TIMx(1) characteristics

1. TIMx, is used as a general term in which x stands for 1,2,3,4,5,6,7,8,15,16 or 17.

Symbol

Parameter

Conditions

Min

Max

Unit

tres(TIM)

Timer resolution time

-1

tTIMxCLK

fTIMxCLK = 80 MHz

12.5

fEXT

Timer external clock

frequency on CH1 to CH4

-0

fTIMxCLK/2

MHz

fTIMxCLK = 80 MHz

MHz

ResTIM

Timer resolution

TIMx (except

TIM2)

-16

bit

TIM2

tCOUNTER

16-bit counter clock

period

65536

tTIMxCLK

fTIMxCLK = 80 MHz 0.0125

819.2

µs

tMAX_COUNT

Maximum possible count

with 32-bit counter

65536 × 65536

tTIMxCLK

fTIMxCLK = 80 MHz

53.68

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