BK3254 Datasheet

v 0.5

© 2011 Beken Corporation

Proprietary and Confidential

Page 12 of 17

3.8.

SAR ADC and LED

The SAR ADC has 10-bit resolution, and the two LED drivers support up to 10

mA current.

3.9.

Audio Peripheral

There are one set of speech ADC with sample rate 8 kHz or 16 kHz. The DAC

have two channels for stereo application, with sample rate 8 kHz, 16 kHz, 44.1

kHz or 48 kHz.

There is also a stereo line in interface, to allow external stereo input passing

internal 31 dB programmable gains amplify to stereo output.

3.10.

USB

It supports USB 2.0 full speed, both host mode and device mode.

3.11.

Bluetooth and FM

It supports Bluetooth 2.1+EDR A2DP/AVRCP and HPF function. The FM receiver

supports 76~108 MHz stereo FM broadcasting.

4.

Electrical Characteristics

4.1.

Absolute Maximum Ratings

Parameter

Description

MIN

TYP

MAX

Unit

VCCBAT

Battery regulator Supply voltage

-0.3

3.3

5.5

V

PRX

RX input power

-

10

-

dBm

TSTR

Storage temperature range

-40

-

150

℃

VCCIO

IO interface voltage

-0.3

2.8

4.2

V

4.2.

Recommended Operating Conditions

Parameter

Description

MIN

TYP

MAX

Unit

VCCBAT

Battery regulator Supply voltage

2.8

4.2

5.5

V

TOPR

Operation temperature range

-20

-

80

℃

VCCIO

IO interface voltage

1.8

-

3.6

V