ST95HF datasheet(11/93 Pages) STMICROELECTRONICS

11 / 93 page

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ST95HF

Pin and signal descriptions

IRQ_OUT

O (4)

Interrupt output

SPI_SS

I (5)

SPI Slave Select (active low)

SPI_MISO

O (5)

SPI Data, Slave Output

SPI_MOSI

I (5)

SPI Data, Slave Input (5)

SPI_SCK

I (6)

SPI serial clock

SSI_0

I (5)

Select serial communication

interface

SSI_1

I (5)

Select serial communication

interface

ST_R1

I (7)

ST Reserved

GND

Ground (digital)

Not connected

XIN

Crystal oscillator input

XOUT

Crystal oscillator output

GND_TX

Ground (RF drivers)

VPS_TX

Power supply (RF drivers)

1. I: Input, O: Output, and P: Power

2. Must add a capacitor to ground (~1 nF).

3. Pad internally connected to a Very Weak Pull-up to VPS.

4. Pad internally connected to a Weak Pull-up to VPS.

5. Must not be left floating.

6. Pad internally connected to a Weak Pull-down to GND.

7. Pad input in High Impedance. Must be connected to VPS.

Table 2. ST95HF pin descriptions (continued)

Pin name

Type(1)

Main function

Alternate function

ST95HF Datasheet(PDF) 11 Page - STMicroelectronics

ST95HF Datasheet(HTML) 11 Page - STMicroelectronics

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