STM32U073RCY3 datasheet(85/146 Pages) STMICROELECTRONICS

85 / 146 page

Symbol

Parameter

Conditions

Min

Max Unit

VOL(3)

Output low level voltage for an I/O pin

PC13, PC14 and PC15

|IIO| = 3 mA

VDDIOx ≥ 2.7 V

0.07

VOH(3) Output high level voltage for an I/O pin

VDDIOx - 0.35

VOL(3)

Output low level voltage for an I/O pin

|IIO = 20 mA(4)

VDDIOx ≥ 2.7 V

1.3

VOH(3) Output high level voltage for an I/O pin

VDDIOx - 1.3

VOL(3)

Output low level voltage for an I/O pin

|IIO| = 4 mA(2)

VDDIOx ≥ 1.62 V

0.45

VOH(3) Output high level voltage for an I/O pin

VDDIOx - 0.45

VOLFM+

(3)

Output low level voltage for an FT I/O pin in FM+ mode (FT I/O with "f" option)

|IIO| = 20 mA

VDDIOx ≥ 2.7 V

0.4

|IIO| = 10 mA

VDDIOx ≥ 1.62 V

0.4

1. TTL and CMOS outputs are compatible with JEDEC standards JESD36 and JESD52.

2. PC13, PC14 and PC15 are tested/characterized at their maximum current of 3 mA.

3. Specified by design, not tested in production.

4. Not applicable to PC13, PC14 and PC15.

Input/output AC characteristics

The definition and values of input/output AC characteristics are given in Figure 24. I/O AC characteristics

definition and Table 66. I/O AC characteristics, respectively.

Unless otherwise specified, the parameters given are derived from tests performed under the ambient

temperature and supply voltage conditions summarized in Section 6.3.1: General operating conditions.

Table 66. I/O AC characteristics

1. The I/O speed is configured using the OSPEEDRy[1:0] bits. The Fm+ mode is configured in the SYSCFG_CFGR1 register. Refer to the

RM0503 reference manual for a description of GPIO Port configuration register.

2. Specified by design, not tested in production.

Speed

Symbol

Parameter

Conditions

Min

Max

Unit

Fmax

Maximum frequency

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

MHz

C=50 pF, 1.62 V≤VDDIOx≤2.7 V

C=10 pF, 2.7 V≤VDDIOx≤3.6 V

C=10 pF, 1.62 V≤VDDIOx≤2.7 V

1.5

Tr/Tf

Output rise and fall time

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

C=50 pF, 1.62 V≤VDDIOx≤2.7 V

C=10 pF, 2.7 V≤VDDIOx≤3.6 V

C=10 pF, 1.62 V≤VDDIOx≤2.7 V

Fmax

Maximum frequency

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

MHz

C=50 pF, 1.62 V≤VDDIOx≤2.7 V

C=10 pF, 2.7 V≤VDDIOx≤3.6 V

C=10 pF, 1.62 V≤VDDIOx≤2.7 V

Tr/Tf

Output rise and fall time

C=50 pF, 2.7 V≤VDDIOx≤3.6 V

C=50 pF, 1.62 V≤VDDIOx≤2.7 V

C=10 pF, 2.7 V≤VDDIOx≤3.6 V

4.5

C=10 pF, 1.62 V≤VDDIOx≤2.7 V

STM32U073x8/B/C

Electrical characteristics

DS14548 - Rev 2

page 85/146

STM32U073RCY3 Datasheet(PDF) 85 Page - STMicroelectronics

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