STM32U073RCI3TR datasheet(77/146 Pages) STMICROELECTRONICS

Part #	STM32U073RCI3TR

Description	Ultra-low-power Arm® Cortex®-M0 32-bit MCU, up to 256-Kbyte flash memory, 40-Kbyte SRAM, USB, LCD

PDF	146 Pages

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Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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Figure 21. Typical current consumption versus MSI frequency

High-speed internal 48 MHz (HSI48) RC oscillator

Table 54. HSI48 oscillator characteristics

VDD = 3 V, TA = -40 to 125 °C unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

fHSI48

HSI48 Frequency

VDD = 3.0 V, TA = 30 °C

MHz

TRIM

HSI48 user trimming step

0.11(1)

0.18(1)

USER TRIM COVERAGE HSI48 user trimming coverage

±64 steps

±6(2)

±7(2)

DuCy(HSI48)

Duty Cycle

45(1)

55(1)

ACCHSI48_REL

Accuracy of the HSI48 oscillator over temperature

(factory calibrated)

VDD = 3.0 V to 3.6 V,

TA = -15 to 85 °C

±3(2)

VDD = 1.65 V to 3.6 V,

TA = -40 to 125 °C

±4.5(2)

DVDD(HSI48)

HSI48 oscillator frequency drift with VDD

VDD = 3 V to 3.6 V

0.025(2) 0.05(2)

VDD = 1.65 V to 3.6 V

0.05(2)

0.1(2)

tsu(HSI48)

HSI48 oscillator start-up time

2.5(1)

6(1)

μs

IDD(HSI48)

HSI48 oscillator power consumption

340(1)

380(1)

μA

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 77/146

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