WT41u
DATA SHEET
Monday, 12 December 2016
Version 0.8.7
VERSION HISTORY
Version
0.8
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
Comment
First version
Table reformatting, value updates etc
Replaced “Bluecore4” with “chipset”, added ordering codes
Rest of table reformatting, added antenna & connector dimension drawings
Added current consumption, RF characteristics
Added certification texts
Added current consumption results, edit TX power variation over VDD range.
Slight edits to specifications
Silicon Laboratories Finland Oy
TABLE OF CONTENTS
1
2
3
Ordering Information......................................................................................................................................6
Pinout and Terminal Description ...................................................................................................................7
Electrical Characteristics ............................................................................................................................ 11
3.1
3.2
3.3
Absolute Maximum Ratings ................................................................................................................ 11
Recommended Operating Conditions ................................................................................................. 11
Input / Output Terminal Characteristics .............................................................................................. 12
Input/Output Terminal Characteristics (Digital) ............................................................................ 12
Input/Output Terminal Characteristics (USB) .............................................................................. 13
3.3.1
3.3.2
3.4
3.5
3.6
3.7
4
5
6
PIO Current Sink and Source Capability ............................................................................................. 13
Transmitter Performance For BDR ..................................................................................................... 14
Receiver Performance ........................................................................................................................ 15
Current Consumption .......................................................................................................................... 15
Physical Dimensions .................................................................................................................................. 16
Layout Guidelines ....................................................................................................................................... 19
UART Interface ........................................................................................................................................... 20
6.1
6.2
6.3
UART Bypass ...................................................................................................................................... 22
UART Configuration While Reset is Active ......................................................................................... 22
UART Bypass Mode ............................................................................................................................ 22
7
USB Interface ............................................................................................................................................. 23
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
7.9
USB Data Connections ....................................................................................................................... 23
USB Pull-Up resistor ........................................................................................................................... 23
USB Power Supply .............................................................................................................................. 23
Self-Powered Mode ............................................................................................................................. 23
Bus-Powered Mode ............................................................................................................................. 24
USB Suspend Current ......................................................................................................................... 25
USB Detach and Wake-Up Signaling.................................................................................................. 25
USB Driver .......................................................................................................................................... 26
USB v2.0 Compliance and Compatibility ............................................................................................ 26
8
9
Serial Peripheral Interface (SPI) ................................................................................................................. 27
PCM Codec Interface ................................................................................................................................. 28
9.1
9.2
9.3
9.4
9.5
9.6
9.7
PCM Interface Master/Slave ............................................................................................................... 28
Long Frame Sync ................................................................................................................................ 29
Short Frame Sync ............................................................................................................................... 29
Multi-slot Operation ............................................................................................................................. 30
GCI Interface ....................................................................................................................................... 30
Slots and Sample Formats .................................................................................................................. 31
Additional Features ............................................................................................................................. 32
Silicon Laboratories Finland Oy
9.8
9.9
10
10.1
11
11.1
12
12.1
12.2
12.3
PCM_CLK and PCM_SYNC Generation ............................................................................................ 32
PCM Configuration .............................................................................................................................. 33
I/O Parallel Ports ..................................................................................................................................... 36
PIO Defaults ................................................................................................................................. 36
Reset ....................................................................................................................................................... 37
Pin States on Reset ..................................................................................................................... 38
Certifications ........................................................................................................................................... 39
Bluetooth ...................................................................................................................................... 39
FCC .............................................................................................................................................. 39
ISEDC .......................................................................................................................................... 40
ISEDC (Français) ......................................................................................................................... 40
CE ................................................................................................................................................ 41
MIC Japan .................................................................................................................................... 42
Qualified Antenna Types for WT41u-E and WT41u-N ................................................................ 43
Moisture Sensitivity Level (MSL).................................................................................................. 43
12.3.1
12.4
12.5
12.6
12.7
Silicon Laboratories Finland Oy
WT41u
Bluetooth®
Module
DESCRIPTION
WT41u is a long range class 1, Bluetooth® 2.1 +
EDR module. WT41u is a highly integrated and
sophisticated Bluetooth® module, containing all the
necessary elements from Bluetooth® radio and a
fully implemented protocol stack. Therefore WT41u
provides an ideal solution for developers who want
to integrate Bluetooth® wireless technology into
their design with limited knowledge of Bluetooth®
and RF technologies. WT41u is optimized for long
range applications is available with an integrated
chip antenna, an RF pin for a custom on-board
antenna or a U.FL connector for an external 2dBi
dipole antenna.
By default WT41u module is equipped with powerful
and easy-to-use iWRAP firmware. iWRAP enables
users to access Bluetooth® functionality with simple
ASCII commands delivered to the module over
serial interface - it's just like a Bluetooth® modem.
FEATURES:
Fully Qualified Bluetooth v2.1 + EDR end
product
CE qualified
Full modular certification for FCC and IC
MIC Japan compatibility fully tested with ARIB
STD-T66
TX power : 17 dBm
RX sensitivity : -94 dBm
Integrated chip antenna, RF pin or U.FL
antenna connector
Class 1, range up to 650 meters with chip
antenna or up to 1km with an external dipole
Industrial temperature range from -40
o
C to
+85
o
C
RoHS Compliant
USB interface (USB 2.0 compatible)
UART with bypass mode
6 x GPIO
1 x 8-bit AIO
Integrated iWRAP
TM
Bluetooth stack or HCI
firmware
APPLICATIONS:
Hand held terminals
Industrial devices
Point-of-Sale systems
PCs
Personal Digital Assistants (PDAs)
Computer Accessories
Access Points
Automotive Diagnostics Units
Silicon Laboratories Finland Oy