New product: Raspberry Pi Zero 2 W on sale now at $15

It’s been practically six years since we unleashed the $5 Raspberry Pi Zero on an unsuspecting world. Of all of the merchandise we’ve launched, Zero remains to be the one I’m proudest of: it most completely embodies our mission to offer folks entry to instruments, and to eradicate value as a barrier. We’ve bought practically 4 million items of Zero, and its $10 wireless-enabled large brother Zero W, and so they’ve made their method into the whole lot from sensible audio system to hospital ventilators. However the place our bigger merchandise have grown steadily extra highly effective through the years, we’ve by no means discovered a technique to pack extra efficiency into the Zero kind issue.

Till at present.

Raspberry Pi Zero 2 W

Priced at $15, Raspberry Pi Zero 2 W makes use of the identical Broadcom BCM2710A1 SoC die because the launch model of Raspberry Pi 3, with Arm cores barely down-clocked to 1GHz, bundled right into a single space-saving package deal alongside 512MB of LPDDR2 SDRAM. The precise efficiency uplift over Zero varies throughout workloads, however for multi-threaded sysbench it's nearly precisely 5 occasions sooner.

The new Raspberry Pi Zero 2 W single-board computer against a light grey background
Raspberry Pi Zero 2 W

Raspberry Pi Zero 2 W is out there to buy today from our community of Accredited Resellers. In case you are a subscriber to The MagPi, you’ll be receiving a free Zero 2 W within the subsequent few days; all new subscribers will obtain a unit as a welcome reward.

Zero 2 W on the quilt of The MagPi

Raspberry Pi Zero 2 W specs

Listed below are the highlights:

  • Broadcom BCM2710A1, quad-core 64-bit SoC (Arm Cortex-A53 @ 1GHz)
  • 512MB LPDDR2 SDRAM
  • 2.4GHz IEEE 802.11b/g/n wi-fi LAN, Bluetooth 4.2, BLE
  • 1 × USB 2.0 interface with OTG
  • HAT-compatible 40 pin I/O header footprint
  • MicroSD card slot
  • Mini HDMI port
  • Composite video and reset pin solder factors
  • CSI-2 digicam connector
  • H.264, MPEG-4 decode (1080p30); H.264 encode (1080p30)
  • OpenGL ES 1.1, 2.0 graphics

If a number of this seems to be acquainted, it’s as a result of Simon Martin, who designed each Zero 2 W, and the RP3A0 package deal that powers it, has been capable of squeeze all this further efficiency into the unique Zero kind issue. Nearly all circumstances and equipment designed for Zero ought to work completely with the brand new board, together with our personal case and collection of cables.

A Raspberry Pi Zero 2 W inside the red and white official Zero case, next to the red and white official keyboard and mouse, and a black mug of coffee, upon a wooden desk.
PHENOMENAL COSMIC POWERS…itty-bitty dwelling house!

Packaging magic

The principal barrier to creating the next efficiency Raspberry Pi Zero has all the time been form-factor: with a tiny board, and single-sided element placement, there isn't a bodily room to accommodate each the principle system-on-chip (SoC) and a discrete SDRAM package deal.

Like Raspberry Pi 1, Raspberry Pi Zero and Zero W are constructed across the Broadcom BCM2835 SoC. This neatly sidesteps the issue by utilizing package-on-package (PoP) expertise, through which the SDRAM package deal sits straight on prime of the SoC.

BCM2835 and 168-ball LPDDR2 PoP reminiscence

PoP is a sublime answer if the silicon die within the SoC is sufficiently small to slot in the cavity between the balls of the SDRAM prime package deal. Sadly, as Broadcom added first a quad Cortex-A7 (to create BCM2836), after which a quad Cortex-A53 (to create BCM2837), the die outgrew the PoP cavity. From Raspberry Pi 2 onward, we use discrete SDRAM, however this selection wasn’t accessible to us for a future Zero.

However there’s one other technique to keep away from discrete SDRAM, and when you’ve been following Raspberry Pi because the begin, you’ve met it earlier than. Again within the day, BCM2835 had a barely evil twin, BCM2763, which built-in a 128MB SDRAM die straight into the package deal together with the SoC die; this association is called a system-in-package (SiP). BCM2763 was meant to be used as a graphics coprocessor for cellphones, and powered the unique Raspberry Pi prototype we demoed again in 2011.

BCM2835, however with a goatee

Simon, who designed the BCM2763 package deal at Broadcom a decade in the past, now works at Raspberry Pi. In between designing the official mouse and keyboard, the High-Quality Camera, and Raspberry Pi 400, he discovered time to create RP3A0, a contemporary SiP which mixes the BCM2710A1 die utilized in BCM2837A1, a 4Gbit Micron LPDDR2 die, and the decoupling capacitors required to easy the core provide voltage.

RP3A0 system-in-package

By no means one to move up a possibility for creative expression, Simon even managed to squeeze a really low-resolution Raspberry Pi emblem into the package deal ball-out, as you possibly can see from this package deal and X-ray picture.

Not the smallest Raspberry Pi emblem, however presumably the bottom decision

PCB magic

Thermals are a problem when packing extra efficiency right into a small package deal: can we dissipate the warmth generated by the sooner processor? In widespread with different latest Raspberry Pi merchandise, Zero 2 W makes use of thick inside copper layers to conduct warmth away from the processor. For those who maintain a Zero W and a Zero 2 W in your arms, you possibly can actually really feel the distinction in weight.

All this further copper interprets into increased sustained efficiency: we’ve discovered that in a 20C ambient atmosphere, an uncased Zero 2 W can run our favorite LINPACK linear-algebra stress take a look at indefinitely with out throttling.

Sealed wi-fi in a can

Subsequent to the big RP3A0 package deal, you’ll discover a big metallic protect can, which covers the wi-fi circuitry on the board and protects it from exterior interference. Like all Raspberry Pi merchandise since 3B+, Zero 2 W has FCC modular certification, which reduces the compliance workload concerned in incorporating it into an finish product.

Protect can can protect

New Raspberry Pi Zero 2 PSU

To accompany Zero 2 W, we’re additionally launching a brand new official USB energy provide. This carefully resembles the Raspberry Pi 4 PSU, however with a USB micro-B connector rather than the USB-C connector, and with a barely decreased peak present score of two.5A. Even that is overkill when you’re powering a Zero 2 W, nevertheless it is useful if you wish to energy a Raspberry Pi 3B or 3B+.

BS 1363 FTW

The PSU prices $8, and is out there in with the next plug sorts: US and Canada (sort A); Europe (sort C); India (sort D); UK (sort G); and Australia, New Zealand and China (sort I).

Raspberry Pi Zero 2 W availability

Immediately, Raspberry Pi Zero 2 W is out there in the UK, the European Union, the US, Canada, and Hong Kong. We’ll add new nations as we full our radio compliance work, with Australia and New Zealand arising first in November.

Sadly, Zero 2 W isn’t resistant to the present world semiconductor scarcity. We anticipate to ship roughly 200k items this calendar yr, with an extra 250k to comply with within the first half of 2022.

Ceaselessly-asked questions

We’ll replace this record as we reply questions within the feedback, however listed here are a couple of to get you going.

Are you discontinuing Zero and Zero W?

No. We seldom discontinue merchandise, even the place they've been outmoded by extra fashionable product on the identical worth level. Zero 2 W is $5 dearer than Zero W, and joins the Zero household as a 3rd member.

Observe that Zero and Zero W are presently experiencing provide constraints within the context of the worldwide semiconductor scarcity. We hope that this will likely be resolved in 2022.

Will there be a model of Zero 2 W with 1GB of SDRAM?

No. 1GB LPDDR2 monodie usually are not accessible, and producing a SiP with two stacked SDRAM cube can be very difficult.

What do the markings on RP3A0 imply?

RP3 is the identify of the package deal. A0 signifies that that is the primary model of the half. AU signifies that the package deal makes use of gold (versus copper) bond wires.

The 4-digit code is a producing date, expressed as a yr and per week quantity. Amusingly various items had been manufactured in week 41 of 2020, yielding the deceptive code “2041”.

The 6-digit code is an order date, expressed within the format YYMMDD.

How lengthy will Zero 2 W stay in manufacturing?

We intention to maintain Zero 2 W in manufacturing till a minimum of January 2028.

Credit

Merchandise like Zero 2 W draw on the abilities of your complete Raspberry Pi crew. Apart from Simon, specific thanks are as a consequence of Roger Thornton for compliance, Phil Elwell for firmware, and Mike Buffham for commercials.

I’d wish to thank our companions at Broadcom, Micron and ASE for his or her assist in making RP3A0 a actuality. Like most Raspberry Pi merchandise, Zero 2 W is constructed on the Sony UK Know-how Centre, in Pencoed, South Wales: we couldn’t do that with out them.



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