There are a lot of chip factory released its own BLE SoC chip, which is well-known NORDIC semiconductors nRF52832 nRF51822 follow-up work, it will BLE SoC taken to a new level. This product has many exciting places, it brings higher performance, lower power consumption and more.
From nRF51822 / nRF51422 upgraded from
well-known nRF51822 is a Bluetooth Low Energy's SoC, it has a Cortex-M0 core running at 16Mhz. The nRF52832 is the Cortex-M4F core, and has more RAM and Flash, and many more features and better RF performance.
The following table compares nRF52832 nRF51822 and there is another chip manufacturer BLE:
功耗
Each new generation of BLE SoC out must be done to optimize the power consumption of the above, nRF52832 more nRF51822 is based on the power consumption almost halved:
the Active-the MODE RX: 5.5 mA
the Active-the MODE TX @ 0dBm: 5.5mA
the Active -mode TX @ 4dBm: 7.7mA
power consumption of these data comparison TI's CC26XX great advantage, even compared to other home products as well.
When the power actually used also depends on many other factors, such as frequency or operating parameters BLE (or broadcast connection interval)
the Cortex-core M4F
generation of nRF52832 added many new features. For example, Cortex-M4F kernel, it can be more powerful technical computing capabilities and floating point operations. Now a lot of wear industrial equipment or devices need to built a very complex algorithm, it is necessary to have a faster speed MCU. Fengyun core Cortex-M4F run 64Mhz, improved a lot compared to other chip manufacturers.
Fengyun SoC has 64KB of Flash and RAM 512KB, which is beyond the other a large portion of the chip manufacturers. Nordic said it would have 400KB of Flash can be used in the application. If you've ever worked on BLE products you will know, at least BLE protocol stack to account for more than 80KB Flash. If, as most of the BLE SoC that provides only 128KB of Flash, then the application only about 40KB of space, but for the general task of collecting the sensor is about the same. Before nRF51822 highest offer 256KB of Flash, which is relatively rare at the time, we are pleased to see that once again raise the Nordic Flash space.
Additional Flash and RAM space also means nRF52832 can support multiple protocols and automatically switch at runtime. There are many products already support multi-protocol this feature (see above article), it appears that this seems to become the industry standard, because there is not only a BLE wireless protocol.
BLE protocol stack
Nordic will upgrade to Cortex-M0 core Cortex-M4F kernel, you can ensure BLE protocol stack without having to change. This means developers can use a more stable stack, and dozens of previous run directly routines.
There is no mention Nordic thing about Bluetooth 4.2 aspects, but it is certain is that since the new hardware has come out, by upgrading software to do more things for sure. NRF51822 and can support 4.2 NRF51422 are out with a new SDK.
Welfare:
Taking advantage of the epidemic vacation, small test NRF52810 own at home, found an alternative NRF52832, except for FLASH and RAM than NRF52832 dots. Essentially, the software and hardware is completely generic. If you think NRF52832 cost is relatively high, you can also choose NRF52810 instead.
