SPC560B64L5 datasheet(97/134 Pages) STMICROELECTRONICS

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SPC560B54/6x

Electrical characteristics

Doc ID 15131 Rev 6

97/134

4.16

Slow internal RC oscillator (128 kHz) electrical

characteristics

The device provides a 128 kHz low power internal RC oscillator. This can be used as the

reference clock for the RTC module.

IFIRCSTOP

CC T

Fast internal RC oscillator

high frequency and system

clock current in stop mode

TA = 25 °C

sysclk = off

—

500

—

µA

sysclk = 2 MHz

—

600

—

sysclk = 4 MHz

—

700

—

sysclk = 8 MHz

—

900

—

sysclk = 16 MHz

—

1250

—

tFIRCSU

CC C

Fast internal RC oscillator

start-up time

VDD = 5.0 V ± 10%

—

1.1

2.0

µs

ΔFIRCPRE CC C

Fast internal RC oscillator

precision after software

trimming of fFIRC

TA = 25 °C

−1—

ΔFIRCTRIM CC C

Fast internal RC oscillator

trimming step

TA = 25 °C

—

1.6

ΔFIRCVAR CC C

Fast internal RC oscillator

variation over temperature

and supply with respect to

fFIRC at TA =25°C in high-

frequency configuration

—

−5—

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

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

Table 42.

Fast internal RC oscillator (16 MHz) electrical characteristics (continued)

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

Table 43.

Slow internal RC oscillator (128 kHz) electrical characteristics

Symbol

Parameter

Conditions(1)

Value

Unit

Min

Typ

Max

fSIRC

CC P Slow internal RC oscillator low

frequency

TA = 25 °C, trimmed

—

128

—

kHz

SR —

—

100

—

150

ISIRC

(2)

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%

—8

µs

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