STM32H7B3AI datasheet(118/238 Pages) STMICROELECTRONICS

118 / 238 page

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Ilkg

FT_u I/O

Max(VDDxxx) < VIN ≤ 5.5 V (3)(4)(8)(5)

5000(6)

TT_xx input leakage current

0 < VIN ≤ Max(VDDxxx)(5)

±250

VPP (BOOT0 alternate function)

0 < VIN ≤ VDDIOx

VDDIOx < VIN ≤ 9 V

RPU

Weak pull-up equivalent resistor(7)

VIN = VSS

kΩ

RPD

Weak pull-down equivalent resistor(7)

VIN = VDD(5)

CIO

I/O pin capacitance

1. Compliant with CMOS requirements.

2. Guaranteed by design.

3. All FT_xx IO except FT_lu and FT_u.

4. VIN must be less than Max(VDDxxx) + 3.6 V.

5. Max(VDDxxx) is the maximum value of all the I/O supplies.

6. To sustain a voltage higher than MIN(VDD, VDDA, VDD33USB) +0.3 V, the internal pull-up and pull-down resistors must be disabled.

7. The pull-up and pull-down resistors are designed with a true resistance in series with a switchable PMOS/NMOS. This PMOS/NMOS

contribution to the series resistance is minimal (~10%).

All I/Os are CMOS and TTL compliant (no software configuration required). Their characteristics cover more than

the strict CMOS-technology or TTL parameters. The coverage of these requirements for FT I/Os is shown in

Figure 34. VIL/VIH for all I/Os except BOOT0.

Figure 34. VIL/VIH for all I/Os except BOOT0

Output driving current

The GPIOs (general purpose input/outputs) can sink or source up to ±8 mA, and sink or source up to ±20 mA

(with a relaxed VOL/VOH).

In the user application, the number of I/O pins which can drive current must be limited to respect the absolute

maximum rating specified in Section 6.2 Absolute maximum ratings. In particular:

STM32H7B3xI

Operating conditions

DS13139 - Rev 8

page 118/238

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