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--- en:iot-open:hardware2:raspberrypi:edgeclassfamily [2023/11/07 17:36] – pczekalski
+++ en:iot-open:hardware2:raspberrypi:edgeclassfamily [2023/11/23 10:36] (current) – pczekalski
@@ Line 1: / Line 1: @@
-===== Raspberry Pi Edge Class Devices Hardware Review =====
+====== Raspberry Pi Edge Class Devices Hardware Review ======
-The Raspberry Pi Pico is the MCU development board that uses the chip RP2040, designed by Raspberry Pi in 2019. It is intended as a low-cost, low-power device with big computational possibilities and connectivity features. This device is intended to work with constrained power sources, mainly battery-powered. The MCU integrates all features, including 6 banks of RAM, an interrupt controller, DMA, timers, oscillators, I/O, voltage regulator and ROM in a single enclosure. The CPU is an ARM Cortex-M0+ (double core) one.\\
+{{:en:iot-open:czapka_b.png?50| General audience classification icon }}{{:en:iot-open:czapka_e.png?50| General audience classification icon }}\\
-A compact, 7x7mm chip, exposes 29 GPIOs.
+The Raspberry Pi Pico is the MCU development board that uses the chip RP2040, designed by Raspberry Pi in 2019.
+== Hardware ==
+It is intended as a low-cost, low-power device with big computational possibilities and connectivity features. This device is intended to work with constrained power sources, mainly battery-powered. The MCU integrates all features, including 6 banks of RAM, an interrupt controller, DMA, timers, oscillators, I/O, voltage regulator and ROM in a single enclosure.\\
+A compact, 7x7mm chip exposes 26 GPIOs and is one of the most affordable MCUs, estimated at 4 USD/piece only.
+Currently, there are 2 types of development boards available: Raspberry Pi Pico and Raspberry Pico W. The last one provides wireless connectivity. It is also possible to have just MCUs (RP2040) as chips to be soldered; thus, third-party development boards are available in the market.
+A genuine RPi Pico W development board is present in the figure {{ref>rpipicow}}.\\
+With a built-in voltage regulator, the input voltage range is wide and starts from 1.8V up to 5.5V.
+<figure rpipicow>
+{{ :en:iot-open:hardware2:raspberrypi:rpipicow.jpg?400 | Rapsberry Pi Pico W development board}}
+<caption>Rapsberry Pi Pico W development board</caption>
+</figure>
+== CPU ==
+The CPU is an ARM Cortex-M0+ (double core) running up to 133 MHz (scalable). It supports DMA. There is no FPU, however. A Nested Vector Interrupt Controller is also present, along with a 24-bit timer. CPU and NIC can be put into the very low power mode.
+== Memory ==
+RPI Picos have 264kB of internal RAM (SRAM) and 2MB of built-in QSPI flash with the capability for an extension with external one up to 16MB. RAM uses DMA to perform CPU-less transfers.\\
+There is a 16kB ROM that contains bootloaders, USB mass storage UF2 support and utility libraries such as FPU implementation.
+== Networking ==
+Only the Pico W series includes a built-in radio that is 802.11n (2.4 GHz WiFi) and Bluetooth 5.2.\\ IoT-specific protocols are supported only with external modules.
+== Peripherals ==
+The Pico MCU includes a rich set of peripheral interfaces:
+    * 26 multipurpose GPIO inputs/outputs,
+    * 2xUART,
+    * 2xSPI,
+    * 2xI2C,
+    * 15 PWM channels,
+    * 4xADC 12-bit (500ksps) converters where only 3 are usable, with a temperature sensor (for compensation),
+    * 8 programmable state machines,
+    * USB 1.1 controller (PHY) with HOST and DEV.
-<todo @pczekalski> RP2040 description </todo>

en/iot-open/hardware2/raspberrypi/edgeclassfamily.1699378612.txt.gz · Last modified: 2023/11/07 17:36 by pczekalski