Developer who currently are using nRF52840 based modules must be excited waiting for nRF52833’s distribution. Most developers are aware that nRF52833 supports long range, multi protocol and USB interface but has less RAM and Flash memory rather than nRF52840 and no doubt is the best alternative to have cost effective without extra efforts.
Raytac has released 3 models of nRF52833 based modules just at the same time when Nordic released, MDBT50Q-512K / MDBT50Q-P512K / MDBT50Q-U512K. Both nRF52840 and nRF52833 module are based on same form factor and pin out. To have quick visual identification finding the difference, Raytac’s nRF52833 modules are built by Green PCB but nRF52840 modules are Blue.
Standing on marketing perspective point of view, iPhone user are often been viewed as a higher contribution margin group. Not only talking about consumer behavior, but also the motivation looking for device integrated with their own iOS devices. That explains why HomeKit devices recently has been widely spreading out in Apple stores or shops.
Wireless technology, says Bluetooth or WiFi, is the key role to connect between devices for Apple HomeKit implements. Surely, Bluetooth is more applicable than WiFi, not only easier to connect to iOS devices but also much lower power consumption and higher security level to rich consumer’s experience.
Raytac has been devoting to Bluetooth Low Energy module development for several years, started from BT4.0 to the latest. Raytac modules has selected Nordic’s solution, which is a highly optimized solution running HomeKit Accessory Protocol (HAP) and application firmware. The ultra-low power even enhance the design and usability for HomeKit devices implements.
After MFi Licenses program jointed, Nordic nRF5 HomeKit SDK is capable to access, Raytac expects to escalate the support ability in terms of hardware and firmware aspects for all customers who are interested in Apple HomeKit implements.
Raytac Corporation 勁達國際電子有限公司
A BT5.1 & BT5 & BT 4.2 module maker based on Nordic nRF52 & nRF51 solution
Raytac is glad to announce that we has expanded our distributor network to Japan with 丸紅情報システムズ株式会社 (Marubeni Information Systems Co. Ltd.).The distribution agreement covers sales, marketing, and support for Raytac Corporation’s full range of Modules lines, including Nordic’s proven nRF51 Series, nRF52 Series, and nRF52840 in the territory.
With recent solid demand and positive feedback receiving from market, we strongly believe that IoT is the future to enhance people’s life.
With Marubeni Information Systems Co. Ltd. join Raytac’s module distribution network, we truly expect he complementary of network portfolio can bring the opportunity and competitive advantage along with a speedy and convenient accessibility for developers.
Raytac today announces the u.FL connector version module, MDBT42Q-U series which selects Nordic nRF52832 and nRF52810 SoC to provide the Bluetooth Low Energy (Bluetooth LE, aka BLE) wireless connectivity for IoT applications.
From IC Revision 1 to 2While there are quite a few changes available for review in the nRF52840 documentation, there is update that is particularly important for many users out there, including a large amount of our own customers. The update I am talking about is about the power supply.
First things first – if you’re interested in reading the whole documentation for Nordic Semiconductor’s nRF52840, then look no further than their Infocenter.
As you can see in the picture below, there’s a lot of information about LDO and DC/DC regulators. That is exactly the main topic of today’s post.
On nRF52840 version C, when changing from 5.5V to 3.3V, you had to use LDO mode in order for the chip to function properly. In the new chip version 2, you won’t have to change to LDO mode as you can directly use REG0 DC to DC.
I will let the Infocenter documentation speak for how it works in detail as quoted below:
The system contains two main supply regulator stages, REG0 and REG1.
Each regulator stage has the following regulator type options:
Low-dropout regulator (LDO)
Buck regulator (DC/DC)
In normal voltage mode, only the REG1 regulator stage is used and the REG0 stage is automatically disabled. In high voltage mode, both regulator stages (REG0 and REG1) are used. The output voltage of REG0 can be configured in register REGOUT0. This output voltage is connected to VDD and is the input voltage to REG1.
By default, the LDO regulators are enabled and the DC/DC regulators are disabled. Registers DCDCEN0 and DCDCEN are used to independently enable the DC/DC regulators for the two stages (REG0 and REG1 respectively).
When a DC/DC converter is enabled, the LDO for the corresponding regulator stage will be disabled. External LC filters must be connected for each of the DC/DC regulators being used. The advantage of using a DC/DC regulator is that the overall power consumption is normally reduced as the efficiency of such a regulator is higher than that of a LDO. The efficiency benefit of using a DC/DC regulator becomes particularly prominent when the regulator voltage drop (difference between input and output voltage) is high. The efficiency of internal regulators vary with the supply voltage and the current drawn from the regulators.
Note: Do not enable DC/DC regulator without an external LC filter being connected as this will inhibit device operation, including debug access, until an LC filter is connected.
We hope you get a better understanding about the update from nRF52840 Revision 1 to 2 and its power supply.
Raytac now has started supply module demo board, MDBT50Q-DB, build by nRF52840 v2 SoC.
If you would like to purchase our MDBT50Q-DB demo board (deployed module: MDBT50Q-1MV2) on it, you can get one on eBay or Verical.
We at Raytac wish you all a nice day and happy tinkering 🙂