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700 points elipsitz | 4 comments | | HN request time: 0.001s | source
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blackkat ◴[] No.41192280[source]
Some specs here: https://www.digikey.ca/en/product-highlight/r/raspberry-pi/r...

Based on the RP2350, designed by Raspberry Pi in the United Kingdom

Dual Arm M33s at 150 MHz with FPU

520 KiB of SRAM

Robust security features (signed boot, OTP, SHA-256, TRNG, glitch detectors and Arm TrustZone for Cortex®-M)

Optional, dual RISC-V Hazard3 CPUs at 150 MHz

Low-power operation

PIO v2 with 3 × programmable I/O co-processors (12 × programmable I/O state machines) for custom peripheral support

Support for PSRAM, faster off-chip XIP QSPI Flash interface

4 MB on-board QSPI Flash storage

5 V tolerant GPIOs

Open source C/C++ SDK, MicroPython support

Software-compatible with Pico 1/RP2040

Drag-and-drop programming using mass storage over USB

Castellated module allows soldering directly to carrier boards

Footprint- and pin-compatible with Pico 1 (21 mm × 51 mm form factor)

26 multifunction GPIO pins, including three analog inputs

Operating temperature: -20°C to +85°C

Supported input voltage: 1.8 VDC to 5.5 VDC

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jayyhu ◴[] No.41194963[source]
Edit: See comment below; The RP2350 can be powered by a 5V supply.
replies(3): >>41195190 #>>41195265 #>>41195602 #
1. skykooler ◴[] No.41195265[source]
How much tolerance does that have - can it run directly off a 3.7v lithium ion battery?
replies(2): >>41195635 #>>41196060 #
2. ◴[] No.41195635[source]
3. jayyhu ◴[] No.41196060[source]
Yep, they explicitly call out that the onboard voltage regulator can work with a single lithium ion cell.
replies(1): >>41196227 #
4. dvdkon ◴[] No.41196227[source]
The regulator can take that, but as far as I can see it's only for DVDD, the core voltage of 1.1 V. You also need at least IOVDD, which should be between 1.8 V and 3.3 V. So you'll need to supply some lower voltage externally anyway.

I suppose the main draw of the regulator is that the DVDD rail will consume the most power. 1.1 V is also much more exotic than 3.3 V.