BLUENRG-332VC datasheet(47/67 Pages) STMICROELECTRONICS

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Table 36. 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.

6.3.17

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 6.3.2 General operating conditions.

Table 37. 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

Figure 14. Recommended RSTN pin protection

Note:

The external reset circuit protects the device against parasitic resets.

The user must ensure that the level on the RSTN pin can go below the VIL(RSTN) max. level specified in the

table, otherwise the reset is not taken into account by the device. The external capacitor on RSTN must be

placed as close as possible to the device.

BlueNRG-LPS

Operating conditions

DS13819 - Rev 4

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