STLC4420A 查看數據表（PDF） - STMicroelectronics

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STLC4420A

Single chip 802.11b/g/a WLAN radio

STMicroelectronics 

Pin descriptions

STLC4420A

Table 1. STLC4420A signal descriptions (continued)

Pin name Pin number

Type

Internal

resistor

Function

Power supply pins

POR_V2O

L17

POR_V2I

L18

POR_V4I

M6

POR_V4O

M7

VBATV2X

B16

VBATV2

N24

VBATV1

N16

VBATV4

M14

STANDBY1 M20

STANDBY2 M24

SER_MODE M18

VBAT

C15

VDIG

G23

1.8V (V2) Digital

Input

1.8V (V2) Digital

Output

2.8V (V4) Digital

Input

2.8V (V4) Digital

Output

Supply Input

(3.6V)

1.8 Digital Output

1.8 Digital Output

1.8V (VIO) Digital

Input

Supply Input

(3.6V)

Supply Input

(3.3V)

BB/MAC Power on Reset Input

EMU Power on Reset Output. A more

detailed description could be added from the

ST EMU spec

Transceiver Power on Reset Input

EMU Power on Reset Output. A more

detailed description could be added from the

ST EMU spec

Battery supply inputs for regulator V2X of the

EMU. Decouple . Decouple to a solid ground

plane using a ceramic capacitor located as

close a possible to the VBAT pins.

Battery supply inputs for regulator V2 of the

EMU. Decouple to a solid ground plane using

a ceramic capacitor located as close a

possible to the VBAT pins.

Battery supply input for regulator V1 of the

EMU. Decouple to a solid ground plane using

a ceramic capacitor located as close a

possible to the VBAT pins.

Battery supply input for regulator V4 of the

EMU. Decouple to a solid ground plane using

a ceramic capacitor located as close a

possible to the VBAT pins.

Indicates power regulator standby status with

STANDBY_1. A more detailed description

should be taken from the ST EMU

specification

Indicates power regulator standby status with

STANDBY_1. A more detailed description

should be taken from the ST EMU

specification

Selects Serial Host Interface Mode. Set to

Logic High for SPI mode, set to Logic Low for

SDIO mode

Battery supply inputs. Decouple to a solid

-

ground plane using a ceramic capacitor

located as close a possible to the VBAT pins.

-

Supply pin for SW1 to SW4 digital output

drivers. (3.6V Nominal)

8/40

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