SPC574S60 datasheet(51/77 Pages) STMICROELECTRONICS

51 / 77 page

DS10601 Rev 6

51/77

SPC574Sx

Electrical characteristics

Figure 12. Test circuit

3.17

Internal RC oscillator (16 MHz) electrical characteristics

The device provides a 16 MHz internal RC oscillator. This is used as the default clock at the

power-up of the device.

IXTAL

OFF

PCB GND

Tester

ALC

Z = R + j

ωL

VEXTAL = 0 V

VXTAL = 0 V

ALC INACTIVE

Conditions

XTAL

EXTAL

VSSOSC

VSS

VDDOSC

Bias current

Comparator

Table 34. Internal RC oscillator electrical specifications

Symbol

Parameter

Conditions

Value

Unit

Min

Typ Max

fTarget

CC D IRC target frequency

—

MHz

δfvar_noT CC P

IRC frequency variation without temperature

compensation

—–8

—

δfvar_T CC T

IRC frequency variation with temperature

compensation

TJ <150 °C

–2

—

δfvar_SW — T IRC software trimming accuracy

Trimming temperature

–1

—

tstart_noT CC T Startup time to reach within fvar_noT

Factory trimming

already applied

——

µs

tstart_T CC T Startup time to reach within fvar_T

Factory trimming

already applied

——

120

µs

IAVDD5 CC T Current consumption on 5 V power supply

After tstart_T

——

400

µA

IDVDD12 CC T Current consumption on 1.2 V power supply After tstart_T

——

175

µA

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