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Kedah Electronics Engineering LLC
PRESENTS
Microcontroller B41 The Universal Platform For
Portable Radio Communication Devices
Kedah Electronics Engineering LLC, Russia, Moscow
7 495 530 0102, kedah_at_kedah.ru
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
www.kedah.ru
2
Microcontroller B41 universal platform for
portable radio communication devices
Microcontroller B41
B41 is universal platform for commercial portable
radio communication devices. Radiochannel
interface (capacity is up to 2Mbit/s), PCM
interface, CVSD codec and cryptographic module
makes B41 microprocessor to be a perfect choice
for any voice applications such as home and
office telephones, radio extenders, wireless
on-door speakerphone and individual earphones
(hands free) with encrypted channel for special
applications. Implemented various peripheral
interfaces and such feature as simple connection
of extension modules directly to the system bus
makes microcontroller B41 be a perfect platform
for telemetry and monitoring systems (including
medical), remote control systems of home units
and industrial equipments.
The software of B41 has tools that allow building
of information controlling wireless network
(ICWN) with ability of data retranslation between
units. ICWN tools and very reasonable price of
microcontroller let to consider B41 as a very
perspective unit for applications at wireless
public utility networks (remote data collection
from electricity, gas, water and heat meters)
as well as at security systems (fire alarm, car
alarm, etc.) B41 is also applied for encrypted
RF-tags and personal RFID. In retail field, B41
is used for wireless connection of cash registers
to the server, updated via RF pricers, remote
configurator of commercial and info screens. The
other obvious application is encrypted wireless
computer network and applicable to Bluetooth or
ZigBee systems as well.
B41  microcontroller for portable radio
applications. B41 is universal platform for
commercial portable radio communication devices.
The reasons to apply B41 the mentioned way is the
technical parameters of the microcontroller such
as multiple functionality, low power consumption
and balanced performance, low cost. 0.25 ?m CMOS
technology with 5 metal layers.
Microcontroller B41
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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3
Microcontroller B41 universal platform for
portable radio communication devices
Microcontroller B41
The structure of B41-3 microcontroller is
presented here. The basis of microcontroller is 4
context 16 bit processor core. Moreover,
microcontroller has embedded mask ROM (2kB, 1k x
16), SRAM (64kB, 32k x 16), MAC-module, context
interrupt controller, timers block, set of
interfaces for general applications and number of
specialized modules. Embedded ROM contains UART
loader, debug monitor and external Flash-memory
manager programs. MAC-module assure integer
multiplication of two 16-bit numbers getting in
the result 32-bit product, multiplication with
accumulation of 48-bit sum and integer-valued
division of 32-bit dividend on 16-bit divisor.
Timers block contains 4 programmable 16-bit
timers, maskable interrupt oscillators with 256Hz
and 2Hz frequency and watchdog timer as well.
Programmable timers are clocked by frequency of
2MHz and assure single and multiple count modes.
Watchdog timer assures system restart (reloading)
in case of software failure. Embedded ROM
contains UART loader, debug monitor and external
Flash-memory programmer.
Microcontroller B41
Kedah Electronics Engineering
Kedah Electronics Engineering
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Microcontroller B41 universal platform for
portable radio communication devices
Microcontroller B41
B41-core is a multi-context microprocessor core.
The B41-core operates with the CISC-instructions
that are interpreting via internal RISC-operation
core.

• Current instruction repeating mechanism
• Power management and clock frequency control
• The B41-core main parameters are
• Data width 16 bits
• Address width 24 bits
• Minimal addressable element 16-bits word
• Address area 16M words (32MB)
• Segment size 64K words (128KB)
• Quantity of contexts 4
• Number of general purpose registers 8 per context
  
• Number of segment registers 6 per context

• The B41-core feature are
• Multicontext realization
• High-level instructions interpretation by means
  of built-in mini-programs of internal
  RISC-operation core
• Programs and data unified address area
• Segment representation of address area (64K words
  non-crossing segments)
• Advanced mechanism of operands addressing
  (register, direct, indirect, index, immediate)

Microcontroller B41
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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5
Microcontroller B41 universal platform for
portable radio communication devices
Microcontroller B41
Parameter Value
Internal logics supply voltage, VCCi 2.5V 10
I/O buffers supply voltage, VCCb 3.6V (typical value is 3.0V)
Logic levels 3V CMOS
System oscillator frequency, FSYS 12MHz 50ppm
Stand-by mode oscillator, FSTB 32768Hz 50ppm
Total power consumption (ICC ICCi ICCb) at supply viltage VCCi2.5V , VCCb3.0V depending on the mode has the following values Total power consumption (ICC ICCi ICCb) at supply viltage VCCi2.5V , VCCb3.0V depending on the mode has the following values
In active mode (FT12MHz, w/o SLEEP) typical value 18mA
In SLEEP mode (FT12MHz, 50 SLEEP) typical value 9mA
In Stand-by mode (FT32768Hz) typical value 200?A
In Off mode (FT0) not more than 10?A
Microcontroller B41
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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6
Microcontroller B41 universal platform for
portable radio communication devices
Design Kit B41-DKit

• Base configuration of the sub-kit includes the
  following modules
• B41-Cross cross-board
• B41-RC?-433 or B41-RC? radiocontroller for 433
  MHz or 2400 MHz
• Loading cable assures programs loading via PC
  COM-port
• OLED-b41-fc or OLED-b41-be color (262K
  colors,128x128 pixels) or monochrome (blue light,
  128x32 pixels) module of OLED-display
• PROTO-b41 prototyping board. Base
  configuration can be extended with the following
  modules
• B41-RCc-433/455/868/915 or B41-RCb/B41-RCba
  optional radiocontrollers for 433/455/868/915/2400
  MHz
• AUDIO-b41 audio module
• USB-b41 USB module

• ENET-b41 Ethernet module
• RS485-b41 level shifter of RS-485 interface
• RS232-b41 level shifter of RS-232 interface
• ACDC-5V5-A5 power adapter (220V/5V).
• The vendor is also planning to add extra modules
  such as
• FPGA-b41 FPGA module (to prototype blocks on
  FPGA loaded via B41)
• KeyPad-b41 keypad
• Bat-b41 battery power module. It worth to say
  that as soon as the second radiocontroller is
  connected to the cross-board via specialized
  connector (Pos.1), the user of B41-DKit gets
  ability to debug dual-processor configurations.

• Design Kit B41-DKit is intended for designing
  and debugging of the hard- and software
  applications built on B41 basis and on
  radiocontrollers of B41-RC family as well.
• The basis of B41-DKit is main board B41-Cross.
  B41-Cross has three unified (Pos.2 Pos.4) and
  one specialized connectors (Pos.1) that assures
  connection of radiocontroller and relevant
  peripheral modules.
• The main board also has UART interface connector
  (for connection to COM-port of PC via loading
  cable), power connector and other elements. Each
  kit consists of 2 sub-kits.

Design Kit B41-DKit
Kedah Electronics Engineering
Kedah Electronics Engineering
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Microcontroller B41 universal platform for
portable radio communication devices
Design Kit B41-DKit
SOFTWARE
Real-time operating system B41OS supports
preemptive multitasking and controls
applications, assures access to peripheral units
and has minimal needed user interface. The value
of binary code of the OS core does not exceed
3KB. B41OS includes program interfaces for
radiochannel (supports the most common
transceiver chips), COM-port, USB and other
peripherals. To support application of B41 at
such devices that keeps large volume of stored
data as cordless phones and others, B41OS has
file system B41FFS (on YAFFS basis) that uses
Flash-memory as a data storage means. Optimizing
compiler from C is developed on
GNU C version 3.3 and adopted to architecture
and instruction set of B41. Dev C, ECLIPSE or
Microsoft VC are used for source code editing and
primary debugging. One of key elements of the
software is continuously extending C
radiochannel drivers library that support various
configurations starting from rather simple
point-to-point or point-to-multipoint to
distributed systems with relaying of data packet
via chain of radiocontrollers. Integrated
development environment for assembler IDEB41
has text editor, assemblers compiler and program
simulator combined with single-step debugger.

• B41-DKit is furnished with software development
  kit B41_SDK. B41_SDK has the following
  structure
• debug monitor-loader B41_Loader
• operating system B41OS
• optimizing compiler from C
• C library
• integrated development environment for assembler
  IDEB41.
• Debug monitor-loader B41_Loader assures
  programs loading to the microcontrollers memory,
  Flash-memory programming, viewing and editing of
  RAM and peripheral modules registers.

Design Kit B41-DKit
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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Microcontroller B41 universal platform for
portable radio communication devices
Radiocontrollers Family

• Radiocontroller contains the following parts
• Microcontroller ?41-3
• Flash-memory for programs and data storage
• RF transceiver
• Voltage regulators.
• Wide number of sequential interfaces (UART, SPI,
  PCM, I2C) plus three 8-bit parallel ports allows
  easy connecting of various peripheral devices.
  More than that, it is possible to connect
  high-speed devices, which require a large data
  streams, via system bus (EMI).
• The particular examples of Radiocontroller B41-RC
  application are home and office cordless
  telephones, wireless telemetry, wireless home and
  industrial remote control systems, wireless alarm
  and security systems, wireless cash register
  networks, etc

Main advantage of the Radiocontroller (comparing
to radiomodem) is that it fulfills radiochannel
service as well as assures hard- and computing
resources that control equipment and process
receiving data. Supply voltage of
Radiocontroller has wide range from 3.5 to 6.0
V. Thus, the power can be supplied in various
ways by 5V ACDC-adapter, via USB-port to PC, by
Lion accumulator (3.7 V) or by battery of 3 NiMH
accumulators 1.2 V each. The operating
temperature range of the Radiocontroller depends
on the particular modification and keeps from 0
to 70C for commercial modification and from -40
to 85C for industrial modification.
?ontroller and radiomodem at one compact PCB
module Radiocontrolles of B41-RC family, is built
on B41 microcontroller basis and has number of
modifications that varies in frequency ranges,
flash memory capacity, type of the antenna and
other features. Radiocontroller of B41-RC family
to be mostly applied as the hard core for
portable systems that are using radio channel.
Radiocontrollers Family
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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9
Microcontroller B41 universal platform for
portable radio communication devices
Radiocontrollers Family
Radiochannel Parameters
Parameter Value
Frequency ranges B41-RCc-433 B41-RCc-455 B41-RCc-868 B41-RCc-915 B41-RCb(a) 433 MHz 455 MHz 868 MHz 915 MHz 2400 MHz
Type of the channel FHSS
Type of the duplex TDD
Type of the modulation GFSK
Maximumbit rate per channel B41-RCb(a) B41-RCc 1 MBit/s 153 kBit/s
Receiver sencitivity 90 dBm (BER0.1)
Maximum transmit output power B41-RCb(a) B41-RCc 16 dBm 10 dBm
Supply Current
Mode Value Measurement Details
in Power-down mode 50 µA
in Stand-by mode 0.8 mAmp WDT RTC service
For minimum transmitter power (PRF) B41-RCb(a) B41-RCc 70 mAmp 25 mAmp PRF 0 dBm PRF 0 dBm
For maximum transmitter power (PRF) B41-RCb(a) B41-RCc 105 mAmp 30 mAmp PRF 16 dBm PRF 10 dBm
Radiocontroller
Radiocontrollers Family
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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Microcontroller B41 universal platform for
portable radio communication devices
Applications
Wireless Skype phone on basis of wireless handset
B41-HSet and USB base station B41-USB-BS is
destined for comfortable communication using
IP-phone computer software mostly Skype, MSN and
ICQ in future. It keeps all advantages of IP
telephony (cheap long-distance/international
calls and free PC-to-PC calls). Furthermore
wireless PC IP-phone gives user comforts of
modern DECT-phone. Due to the fact that
connection between IP-handset and PC via USB base
station exists permanently, you can adjust a
handset on-the-fly, edit a phone book, change
wallpapers and sounds with help contained
software. IP-phone has an opportunity to send and
receive text messages.
Wireless Skype phone
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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Microcontroller B41 universal platform for
portable radio communication devices
Applications
WIRELESS SKYPE PHONE FUNCTIONS SERVICES
Parameter Value Value
Frequency range 433 MHz 2.4 GHz
Radio channel type FHSS FHSS
Duplex type TDD TDD
Modulation type GFSK GFSK
Channel bit rate 153 Kbit/s 1Mbit/s
Receiver sensitivity 96 dBm 80 dBm
Maximum transmitter power 10 dBm 14 dBm
Maximum distance (on open air) 150 m 100 m

• Modern, bright, high contrast color OLED-display
  (262 144 colors)
• Shows date, time and call records
• Review incoming calls and outgoing calls records,
  shortcut dialing
• Multi-language support
• Registers all phone calls in base (incoming,
  outgoing, missed)
• Out of the coverage alarm signals
• Ringtones loading
• Key sound indication
• Handset searching mode
• Automatic redialing
• Quick dial
• Tone extension number dialing
• Phone book for 200 numbers

• Clock, calendar, alarm, reminder
• Volume adjustable (ringtone, key, speaker)
• Music on hold
• Call duration indication
• Radio signal level indication
• Battery level indication
• Mute mode
• Handset firmware upgrade
• Subscriber List Synchronization with PC
• Powers from USB (no extra power supply is needed)
• Security service function. (bug the office by
  means of the handset)

Wireless Skype phone
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
www.kedah.ru
12
Microcontroller B41 universal platform for
portable radio communication devices
Applications
Wireless Skype phone
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
www.kedah.ru
13
Microcontroller B41 universal platform for
portable radio communication devices
Applications
Wireless Telemetry System for Electricity Meters
controls operating modes, assures electricity
meter data collecting and transmitting to
dispatchers PC. Data exchange between GSM
concentrator and dispatchers PC occur via GSM
net. One dispatchers PC can be connected to
255 GSM concentrators and every GSM concentrator
communicates with 255 radioadapters via local
radio channel.
Wireless Telemetry System
Kedah Electronics Engineering
Kedah Electronics Engineering
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Microcontroller B41 universal platform for
portable radio communication devices
Applications
GSM-communicator sequentially transmits these
commands over the RS-485 interface to the
Radio-controller module. The Radio-controller
translates the commands to the Radio-adapter
devices directly or through the re-translators,
using the radio-interface. The radio-adapters
transmit the commands to the user devices over
the RS-485 interface. While addressing a concrete
user device the latter gives the answer, which is
translated through the radio-adapter,
re-translator, radio-controller to the
GSM-communicator. After transmission-reception of
the whole set of commands the GSM-communicator
transmits the results to the supervisor server
over the GSM/GPRS channel.
Radioadapters for Electricity Meters Wireless
Telemetry The radio-adapters and re-translators
represent the lower link in the data transmission
network. Their main difference is as follows the
radio-adapters are the terminal devices, which
can receive the data from the center only over
the radio channel, transmit this data to the user
devices over the RS-485 interface, receive from
the user devices the confirmation of the command
execution and transmit this confirmation to the
center over the radio channel. the re-translators
execute all the above listed functions and also
can translate the commands to other devices (to
re-translators or radio-adapters) over the RS-485
interface or over the radio channel
Any personal computer or GSM communicator can
play the role of the master device. In the latter
case, the supervisor server sends a set of the
commands to the GSM-communicator through the
GSM-GPRS channel. Each command represents a
package with the data in the RS-485 wire protocol
format The commands can be group or individual
ones. For the individual commands the
confirmation of execution is expected..
Wireless Telemetry System
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
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15
Microcontroller B41 universal platform for
portable radio communication devices
Application
Wireless Telemetry System for Electricity Meters
Characteristic Value Value
Characteristic 433-434 MHz 2.400-2.483 GHz
Interface B41-ENETc B41-USBc B41-RS232c B41-RS485c B41-PIOc Ethernet 10Base-T USB 1.1 RS-232, up to 460 Kb/s RS-485, up to 460 Kb/s general purpose I/O port (48 pins) Ethernet 10Base-T USB 1.1 RS-232, up to 460 Kb/s RS-485, up to 460 Kb/s general purpose I/O port (48 pins)
Average channel rate - symmetrical mode - asymmetrical mode 64/64 Kb/s 115/18 Kb/s 300/300 Kb/s 600/64 Kb/s
Maximum connection distance 200 m 200 m (on open air)
Supply power 5V from USB-connector of PC or external power source 5V from USB-connector of PC or external power source
Ambient temperature 1055C 1055C
Dimensions (without holder) 150mm ? 47mm ? 24mm 190mm ? 47mm ? 24mm
Weight (max) 95g 95g
Parameter Value Value
Parameter 433-434 MHz 2.400-2.483 GHz
Frequency range 433.075434.750 MHz 2.4002.483 GHz
Radio channel type FHSS FHSS
Duplex type TDD TDD
Modulation type GFSK GFSK
Channel bit rate 153.6 Kb/s 1 Mb/s
Receiver sensitivity 96 dBm 80 dBm (BER0.1)
Maximum transmitter power 10 dBm 14 dBm
Wireless Telemetry System
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
www.kedah.ru
16
Kedah Electronics Engineering LLC
Presentation is Over
Thank You
Kedah Electronics Engineering LLC, Russia, Moscow
7 495 530 0102, kedah_at_kedah.ru
Kedah Electronics Engineering
Kedah Electronics Engineering
www.kedah.ru
www.kedah.ru