SPC564B74L7 datasheet(81/118 Pages) STMICROELECTRONICS

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SPC564Bxx - SPC56ECxx

Electrical Characteristics

Doc ID 17478 Rev 4

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4.17

ADC electrical characteristics

4.17.1

Introduction

The device provides two Successive Approximation Register (SAR) analog-to-digital

converters (10-bit and 12-bit).

Note:

Due to ADC limitations, the two ADCs cannot sample a shared channel at the same time

i.e., their sampling windows cannot overlap if a shared channel is selected. If this is done,

neither of the ADCs can guarantee their conversion accuracies.

Table 41.

Slow internal RC oscillator (128 kHz) electrical characteristics

Symbol

Parameter

Conditions(1)

Value(2)

Unit

Min

Typ

Max

fSIRC

CC P Slow internal RC oscillator low

frequency

TA = 25 °C, trimmed

—

128

—

kHz

SR —

—

100

—

150

ISIRC

(3)

CC C

Slow internal RC oscillator low

frequency current

TA = 25 °C, trimmed

—

µA

TSIRCSU

CC P

Slow internal RC oscillator start-up

time

TA = 25 °C, VDD = 5.0 V ± 10%

—

µs

ΔSIRCPRE CC C

Slow internal RC oscillator precision

after software trimming of fSIRC

TA = 25 °C

−2—

ΔSIRCTRIM CC C

Slow internal RC oscillator trimming

step

——

2.7

—

ΔSIRCVAR CC C

Slow internal RC oscillator variation

in temperature and supply with

respect to fSIRC at TA = 55 °C in high

frequency configuration

High frequency configuration

−10

—

+10

VDD = 3.3 V ± 10% / 5.0 V ± 10%, TA = −40 to 125 °C, unless otherwise specified.

All values need to be confirmed during device validation.

This does not include consumption linked to clock tree toggling and peripherals consumption when RC oscillator is ON.

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