Xiamen Weiyou Intelligent Technology Co.Ltd. VU-BLE-V1 specification

VU-BLE-V1

Bluetooth module

specification

VU-BLE-V1 Bluetooth module

1.summary

VU-BLE-V1 4.0 Bluetooth module is a low-power wireless module, operating in the world-wide ISM frequency band at 2.400 to 2.485GHz, using the latest high performance and ultra-low power 4.0 wireless system chip nRF51822 from NORDIC Semiconductor in Norway. It’s communication distance has been greatly expanded with the professional design of Weiyou Intelligent Technology Co. Ltd. Lots of optimized matching debuggings has been done in RF section, so in function, the emission efficiency is highest and harmonic is minimum,and so that the interference with other devices has been reduced to the minimum. At the same time, the Bluetooth module is not easy to be disturbed by other equipment, the stability has been greatly improved.

VU-BLE-V1 4.0 Bluetooth module is small in size and highly integrated which can be embedded in the products of limited space easily.With high sensitivity and low-power consumption, suitable for many types of products. Software is embedded in the module, when power on the pairing is automatic. In design, only a small amount of external circuits is needed to achieve specific functions. Using this module, the product design cycle could be shorten and the design efficiency could be improved.

2.specification

(1)2.4GHz transceiver

*-93 dBm sensitivity in Bluetooth low energy mode

*250 kbps, 1 Mbps, 2 Mbps supported data rates

*TX Power -20 to +4 dBm in 4 dB steps

*TX Power -30 dBm Whisper mode

*13 mA peak RX, 10.5 mA peak TX (0 dBm)

*9.7 mA peak RX, 8 mA peak TX (0 dBm) with DC/DC

*RSSI (1 dB resolution)

(2)ARM® CortexTM-M0 32 bit processor (256/128KBytes Flash,16K/32K RAM)

*275 μA/MHz running from flash memory

* 150 μA/MHz running from RAM

*Serial Wire Debug (SWD)

(3)On air data rates

*250 Kbps

*1 Mbps

*2 Mbps

(4)Transmitter with programmable output power of +4dBm to -20dBm,in 4dB steps.

(5)Transmitter whisper mode -30 dBm.

(6) RSSI function (1dB resolution）

(7)Dynamic load length up to 256Bytes.

(8)System ON/OFF modes.

(9)The crystal oscillator can be controlled either by a 16MHz external crystal or an internal 32.768KHz crystal designed for use with a quartz crystal in parallel resonant mode.

(10)Flexible Power Management

*Supply voltage range 1.8 V to 3.6 V

*4.2 μs wake-up using 16 MHz RCOSC

*0.6 μA at 3 V OFF mode

*1.2 μA at 3 V in OFF mode + 1 region RAM retention

*2.6 μA at 3 VON mode, all blocks IDLE

(11)Applications

*Computer peripherals and I/O devices

*Interactive entertainment devices

·Remote control

·Gaming controller

*Personal Area Networks

·Health/Fitness sensor and monitor devices

·Key-fobs + wrist watches

*Remote control toys

3.PCB Layout Dimensions and Pin Functions

Pin number / Pin name / Pin function
1 / GND / Ground
2 / VDD / VDD(3.3V)
3 / P00 / (1)GPIO0
(2)PWM1
4 / P01 / (1)GPIO1
(2)PWM2
5 / P02 / (1)GPIO2
(2)PWM3
6 / P03 / (1)GPIO3
(2)PWM4
7 / P04 / GPIO4
8 / P05 / GPIO5
9 / P06 / GPIO6
10 / VDD / VDD(3.3V)
11 / GND / Ground
12 / SWDIO / SWDIO
13 / SWCLK / SWCLK
  1. Attentions in PCB Layout

Please pay attention to avoid the test pads area at the bottom of the Bluetooth module, if vias must be placed in the area, please cover oil screen. The antenna area of Bluetooth module should be as far away as possible from metal,and no traces in this area. Copper polygn, power supply traces should not go through the antenna area. Please place the antenna area at the edge of the PCB.

5.Specifications

(1)POR reset time

Figure1. Power on reset time(Test level 2)

Table1. Supply rise time at sample voltages for the measured data shown in Figure1

(2)GPIO specifications

(3)Radio timing parameters

(4)Antenna matching network requirements

(5)Received Signal Strength Indicator(RSSI) specifications

6.Compare nRF51822 with other Bluetooth chips

(1)MCU

a.nRF51822

ARM®CortexTM-M0 32 bit processor (256/128KBytes Flash, 16K/32K RAM). There are many customer groups of ARM, and the development of resources are very rich.

b.TI

8 bit 8051 kernel which determines the performance could not match the operation of Bluetooth protocol properly. And the power consumption is higher than nRF51822.

c.CSR

16 bit MCU, external Flash/EEPROM is needed and can not encrypt the product. So, the cost of product and the PCB area will increase.

(2)New Functions of nRF51822

a. Power management

Except system ON/OFF mode, every function block has it’s own power management, it’s helpful to reduce the power consumption.

b.DC/DC converter setup

The nRF51822 DC/DC buck converter transforms battery voltage to lower internal voltage with minimum power loss. Used with a 3V coil-cell battery, the peak current drawn from the battery is reduced by approximately 25%.

c.The Programmable Peripheral Interconnect (PPI)

The Programmable Peripheral Interconnect (PPI) enables peripherals to interact autonomously with each other using tasks and events independent of the CPU. The PPI allows precise synchronization between peripherals when real-time application constraints exist and eliminates the need for CPU activity to implement behavior which can be predefined using PPI.

(3)Bluetooth Protocol and Application Codes

a.NRF51822

The storage of Bluetooth protocols and application codes are separated from each other. Developers only need to concern how to develop the application codes, do not need to acknowledge how to operate Bluetooth protocols. Only API parameters need to be configured to run the system.

b.TI and CSR

Only provide Bluetooth source codes. Developers could only modify the source codes, it’s hardly to program. Application codes and protocols are mixed stored in the same storage area will bring great difficulties to check out the root of the errors when programming.

(4)Crystals

a.NRF51822

Internal 32.768KHz crystal embedded, external crystal is no need.

b.TI and CSR

External 32.768KHz crystal is needed, the cost increase and the PCB area is larger.

(5)Air-upgrade

a.NRF51822

Only to download the application code upgrading.It’ll not affect the use of products If interrupted in upgrading.

b.TI and CSR

Bluetooth protocols and application codes are all need to upgrade. Products will not work if interrupted in upgrading.

(6)Bluetooth Authentication

a.NRF51822

Bluetooth protocols and application codes are independent of each other, and Bluetooth protocol’s certification is obtained, so only application codes need to be authenticated. If new codes released, only application codes need to be re-authenticated.

b.TI and CSR

Bluetooth protocols and application codes are all need to be authenticated. If new codes released, the two both are all need to be re-authenticated.

(7)Key Features Comparison

nRF51822 / CC2540 / CC2541 / CSR1000
MCU / ARM-M0 32bit / 8051 8bit / 8051 8bit / 16bit MCU
ROM / 256K / 128/256K / 128/256K / 64K external MCU or EEPROM needed
RAM / 16KB / 8KB / 8KB / 64KB
I/O quantity / 31(can be accessed individually with user configurable features) / 21(can not be accessed individually with user configurable features) / 23(can not be accessed individually with user configurable features) / 15(can not be accessed individually with user configurable features)
Supply voltage / 1.8~3.6V / 2.0~3.6V / 2.0~3.6V / 2.0-4.2V
Tx / 10.5mA
8.1mA(DC/DC) / 27mA / 18.2mA / 16mA
Rx / 13mA
9.5mA(DC/DC) / 19.6mA / 17.9mA / 16mA
External storage capacity（used for coil cell battery） / No need / need / need / need
External 32.768KHz crystal / No need / need / need / need
  1. Applications

Some types of bulbs and spotlights using this Bluetooth module are designed by Xiamen Weiyou Intelligent Technologies Co.Ltd.. Controlled by APP, transformation of various color and dimming could be achieved.

When power on, pairing connection of Bluetooth between products and mobiles is automatic. Click the Bluetooth icon at the main window of APP you can check the connection status as shown below.

The left picture displayed below is the main window of APP. Click separate color icons, the corresponding color will light(as shown on right below). Press and hold the round icon in the middle of the APP window and move to left or right could adjust the brightness of light.

Monochromatic color change,seven color allochroism,color gradient and springing to flash when music played could be achieved controlled by APP. Create a comfortable and interesting life for different environments.

The windows of springing to flash when music played and color gradient are shown as below.

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