BLUENRG-LP datasheet(49/72 Pages) STMICROELECTRONICS

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Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

RPU

Pull-up resistor

VIN = GND

kΩ

RPD

Pull-down resistor

VIN = VDD

CIO

I/O pin capacitance

1. Max(VDDx) is the maximum value among all the I/O supplies.

All I/Os are CMOS-compliant (no software configuration required).

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 that can drive current must be limited to respect the absolute

maximum rating specified.

•

The sum of currents sourced by all I/Os on VDD, plus the maximum consumption of MCU sourced on VDD,

cannot exceed the absolute maximum rating ΣIVDD

•

The sum of currents sunk by all I/Os on VSS, plus the maximum consumption of the MCU sunk on GND,

cannot exceed the absolute maximum rating ΣIVGND

The characteristics below are guaranteed by characterization.

Table 35. Output voltage characteristics

Symbol

Parameter

Conditions

Min.

Max.

Unit

VOL

Output low level voltage for I/O pin

CMOS port(1) |IIO| = 8 mA VDD ≥ 2.7 V

0.4

VOH

Output high level voltage for I/O pin

VDD -0.4

VOL

Output low level voltage for I/O pin

|IIO| = 20 mA VDD ≥ 2.7 V

1.3

VOH

Output high level voltage for I/O pin

VDD -1.3

VOL

Output low level voltage for I/O pin

|IIO| = 4 mA VDD ≥ 1.62 V

0.4

VOH

Output high level voltage for I/O pin

VDD-0.45

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

5.3.17

RSTN pin characteristics

The RSTN pin input driver uses CMOS technology. It is connected to a permanent pull-up resistor, RPU.

Unless otherwise specified, the parameters given in the table below are derived from tests performed under the

ambient temperature and supply voltage conditions summarized in Section 5.3.2 General operating conditions.

The characteristics below are guaranteed by design.

Table 36. RSTN pin characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit.

VIL(RSTN)

RSTN input low level voltage

0.3 x VDD

VIH(RSTN)

RSTN input high level voltage

0.7 x VDD

Vhys(RSTN)

RSTN Schmitt trigger voltage hysteresis

200

RPU

Weak pull-up equivalent resistor

VIN=GND

kΩ

BlueNRG-LP

Operating conditions

DS13282 - Rev 2

page 49/72

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