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eleases of models a and b three different splits were possible the default split was 192 mb for the cpu which should be sufficient for standalone 1080p video decoding or for simple 3d processing 224 mb was for linux processing only with only a 1080p framebuffer and was likely to fail for any video or 3d 128 mb was for heavy 3d processing possibly also with video decoding 74 in comparison the nokia 701 uses 128 mb for the broadcom videocore iv 75 the later model b with 512 mb ram was released on 15 october 2012 and was initially released with new standard memory split files arm256_start elf arm384_start elf arm496_start elf with 256 mb 384 mb and 496 mb cpu ram and with 256 mb 128 mb and 16 mb video ram respectively but about one week later the foundation released a new version of start elf that could read a new entry in config txt gpu_mem xx and could dynamically assign an amount of ram from 16 to 256 mb in 8 mb steps to the gpu obsoleting the older method of splitting memory and a single start elf worked the same for 256 mb and 512 mb raspberry pis 76 the raspberry pi 2 has 1 gb of ram the raspberry pi 3 has 1 gb of ram in the b and b models and 512 mb of ram in the a model 77 78 79 the raspberry pi zero and zero w have 512 mb of ram the raspberry pi 4 is available with 2 4 or 8 gb of ram 80 a 1 gb model was originally available at launch in june 2019 but was discontinued in march 2020 47 and the 8 gb model was introduced in may 2020 2 networking edit the model a a and pi zero have no ethernet circuitry and are commonly connected to a network using an external user supplied usb ethernet or wi fi adapter on the model b and b the ethernet port is provided by a built in usb ethernet adapter using the smsc lan9514 chip 81 the raspberry pi 3 and pi zero w wireless are equipped with 2 4 ghz wifi 802 11n 150 mbit s and bluetooth 4 1 24 mbit s based on the broadcom bcm43438 fullmac chip with no official support for monitor mode though it was implemented through unofficial firmware patching 82 and the pi 3 also has a 10 100 mbit s ethernet port the raspberry pi 3b features dual band ieee 802 11b g n ac wifi bluetooth 4 2 and gigabit ethernet limited to approximately 300 mbit s by the usb 2 0 bus between it and the soc the raspberry pi 4 has full gigabit ethernet throughput is not limited as it is not funnelled via the usb chip special purpose features edit the rpi zero rpi1a rpi3a 83 and rpi4 can be used as a usb device or usb gadget plugged into another computer via a usb port on another machine it can be configured in multiple ways such as functioning as a serial or ethernet device 84 although originally requiring software patches this was added into the mainline raspbian distribution in may 2016 84 raspberry pi models with a newer chipset can boot from usb mass storage such as from a flash drive booting from usb mass storage is not available in the original raspberry pi models the raspberry pi zero the raspberry pi pico the raspberry pi 2 a models and the raspberry pi 2 b models with versions lower than 1 2 85 peripherals edit the model 2b boards incorporate four usb ports for connecting peripherals although often pre configured to operate as a headless computer the raspberry pi may also optionally be operated with any generic usb computer keyboard and mouse 86 it may also be used with usb storage usb to midi converters and virtually any other device component with usb capabilities depending on the installed device drivers in the underlying operating system many of which are included by default other peripherals can be attached through the various pins and connectors on the surface of the raspberry pi 87 video edit an early raspberry pi 1 model a with an hdmi port and a standard rca composite video port for older displays the video controller can generate standard modern tv resolutions such as hd and full hd and higher or lower monitor resolutions as well as older ntsc or pal standard crt tv resolutions as shipped i e without custom overclocking it can support the following resolutions 640 350 ega 640 480 vga 800 600 svga 1024 768 xga 1280 720 720p hdtv 1280 768 wxga variant 1280 800 wxga variant 1280 1024 sxga 1366 768 wxga variant 1400 1050 sxga 1600 1200 uxga 1680 1050 wxga 1920 1080 1080p hdtv 1920 1200 wuxga 88 higher resolutions up to 2048 1152 may work 89 90 or even 3840 2160 at 15 hz too low a frame rate for convincing video 91 allowing the highest resolutions does not imply that the gpu can decode video formats at these resolutions in fact the raspberry pis are known to not work reliably for h 265 at those high resolutions 92 commonly used for very high resolutions however most common formats up to full hd do work although the raspberry pi 3 does not have h 265 decoding hardware the cpu is more powerful than its predecessors potentially fast enough to allow the decoding of h 265 encoded videos in software 93 the gpu in the raspberry pi 3 runs at higher clock frequencies of 300 mhz or 400 mhz compared to previous versions which ran at 250 mhz 94 the raspberry pis can also generate 576i and 480i composite video signals as used on old style crt tv screens and less expensive monitors through standard connectors either rca or 3 5 mm phono connector depending on model the television signal standards supported are pal b g h i d pal m pal n ntsc and ntsc j 95 real time clock edit when booting the time defaults to being set over the network using the network time protocol ntp the source of time information can be another computer on the local network that does have a real time clock or to a ntp server on the internet if no network connection is available the time may be set manually or configured to assume that no time passed during the shutdown in the latter case the time is monotonic files saved later in time always have later timestamps but may be considerably earlier than the actual time for systems that require a built in real time clock a number of small low cost add on boards with real time clocks are available 96 97 the rp2040 microcontroller has a built in real time clock but this can not be set automatically without some form of user entry or network facility being added connectors edit pi pico edit location of connectors and main ics on raspberry pi pico pi compute module edit location of connectors and main ics on raspberry pi compute module 4 lite pi zero edit location of connectors and main ics on raspberry pi zero 2 w model a edit location of connectors and main ics on raspberry pi 1 model a location of connectors and main ics on raspberry pi 1 model a revision 1 1 model b edit location of connectors and main ics on raspberry pi 1 model b revision 1 2 location of connectors and main ics on raspberry pi 1 model b revision 1 2 and raspberry pi 2 location of connectors and main ics on raspberry pi 3 location of connectors and main ics on raspberry pi 3 location of connectors and main ics on raspberry pi 4 j8 header and general purpose input output gpio edit raspberry pi 1 models a and b pi 2 model b pi 3 models a b and b pi 4 and pi zero zero w zero wh and zero w 2 have the same 40 pin pinout called j8 header 98 99 raspberry pi 1 models a and b have only the first 26 pins 100 101 102 the j8 header is commonly referred to as gpio connector as a whole even though only a subset of the pins are gpio pins in the pi zero and zero w the 40 gpio pins are unpopulated having the through holes exposed for soldering instead the zero wh wireless header has the header pins preinstalled gpio 2nd func pin pin 2nd func gpio 3 3 v 1 2 5 v 2 sda1 i 2 c 3 4 5 v 3 scl1 i 2 c 5 6 gnd 4 gclk 7 8 txd0 uart 14 gnd 9 10 rxd0 uart 15 17 gen0 11 12 gen1 18 27 gen2 13 14 gnd 22 gen3 15 16 gen4 23 3 3 v 17 18 gen5 24 10 mosi spi 19 20 gnd 9 miso spi 21 22 gen6 25 11 sclk spi 23 24 ce0_n spi 8 gnd 25 26 ce1_n spi 7 pi 1 models a and b stop here 0 id_sd i 2 c 27 28 id_sc i 2 c 1 5 n a 29 30 gnd 6 n a 31 32 n a 12 13 n a 33 34 gnd 19 n a 35 36 n a 16 26 n a 37 38 digital in 20 gnd 39 40 digital out 21 model b rev 2 also has a pad called p5 on the board and p6 on the schematics of 8 pins offering access to an additional 4 gpio connections 103 these gpio pins were freed when the four board version identification links present in revision 1 0 were removed 104 gpio 2nd func pin pin 2nd func gpio 5 v 1 2 3 3 v 28 gpio_gen7 3 4 gpio_gen8 29 30 gpio_gen9 5 6 gpio_gen10 31 gnd 7 8 gnd models a and b provide gpio access to the act status led using gpio 16 models a and b provide gpio access to the act status led using gpio 47 and the power status led using gpio 35 specifications edit version pico model a no ethernet model b with ethernet compute module a zero keyboard raspberry pi pico raspberry pi pico w rpi 1 model a rpi 1 model a rpi 3 model a rpi 1 model b rpi 1 model b rpi 2 model b rpi 2 model b v1 2 rpi 3 model b rpi 3 model b rpi 4 model b compute module 1 compute module 3 compute module 3 lite compute module 3 compute module 3 lite compute module 4 compute module 4 lite rpi zero pcb v1 2 rpi zero pcb v1 3 rpi zero w rpi zero 2 w rpi 400 release date jan 2021 jun 2022 feb 2013 105 nov 2014 106 nov 2018 apr jun 2012 jul 2014 107 feb 2015 56 oct 2016 108 feb 2016 68 14 mar 2018 26 24 june 2019 109 28 may 2020 8gb 2 apr 2014 110 111 jan 2017 112 jan 2019 113 oct 2020 nov 2015 8 may 2016 28 feb 2017 28 oct 2021 38 2 nov 2020 target price usd 4 6 25 105 20 106 25 35 114 25 115 35 35 55 75 109 47 2 30 in batches of 100 116 30 25 30 35 40 25 30 90 in 5 increments 25 75 in 5 increments 5 8 10 15 70 instruction set armv6 m armv6 z 32 bit armv8 a 64 32 bit armv6 z 32 bit armv7 a 32 bit armv8 a 64 32 bit armv6 z 32 bit armv8 a 64 32 bit armv6 z 32 bit armv8 a 64 32 bit armv8 a 64 32 bit soc raspberry pi rp2040 broadcom bcm2835 53 broadcom bcm2837b0 26 broadcom bcm2835 53 broadcom bcm2836 broadcom bcm2837 broadcom bcm2837b0 26 broadcom bcm2711 109 broadcom bcm2835 116 broadcom bcm2837 broadcom bcm2837b0 broadcom bcm2711 broadcom bcm2835 broadcom bcm2710a1 broadcom bcm2711c0 fpu none vfpv2 neon not supported vfpv4 neon vfpv2 neon not supported vfpv4 neon vfpv2 neon not supported vfpv4 neon vfpv2 neon not supported vfpv4 neon vfpv4 neon cpu dual core arm cortex m0 1 arm11 76jzf s 700 mhz 4 cortex a53 1 4 ghz 1 arm11 76jzf s 700 mhz 4 cortex a7 900 mhz 4 cortex a53 900 mhz 4 cortex a53 1 2 ghz 4 cortex a53 1 4 ghz 4 cortex a72 1 5 ghz or 1 8 ghz 117 1 arm11 76jzf s 700 mhz 4 cortex a53 1 2 ghz 4 cortex a72 1 5 ghz 1 arm11 76jzf s 1 ghz 4 cortex a53 1 ghz 4 cortex a72 1 8 ghz gpu none broadcom videocore iv 250 mhz b broadcom videocore iv 400 mhz core 300 mhz v3d broadcom videocore vi 500 mhz 118 broadcom videocore iv 250 mhz b broadcom videocore vi 500 mhz 118 broadcom videocore iv 400 mhz core 300 mhz v3d broadcom videocore vi 500 mhz memory sdram 119 264 kb 256 mb c 256 or 512 mb c changed to 512 mb on 10 august 2016 120 512 mb c 256 or 512 mb c changed to 512 mb on 15 october 2012 44 512 mb c 1 gb c 1 2 4 or 8 gb c 512 mb c 1 gb c 1 2 4 or 8 gb c 512 mb c 4 gb usb 2 0 ports 86 none 1 d 1 e 2 f 121 4 g 81 107 2 109 1 d a 1 d a 1 e a 1 1 micro usb d 1 usb 3 0 ports 0 2 109 0 2 usb otg ports 0 1 power usb c 122 0 1 micro usb d 0 pcie interface 0 pcie gen 2 x1 0 0 video input 15 pin mipi camera interface csi connector used with the raspberry pi camera or raspberry pi noir camera 123 2 mipi camera interface csi a 116 124 125 2 lane mipi csi camera interface 4 lane mipi csi camera interface none mipi camera interface csi 126 none hdmi 1 hdmi rev 1 3 2 hdmi rev 2 0 via micro hdmi 46 1 hdmi a 2x hdmi 1 mini hdmi 2 hdmi rev 2 0 via micro hdmi composite video via rca jack via 3 5 mm ctia style trrs jack via rca jack via 3 5 mm ctia style trrs jack yes a 124 127 via marked points on pcb for optional header pins 128 mipi display interface dsi h yes yes a 116 125 129 130 yes no audio inputs as of revision 2 boards via i²s 131 audio outputs analog via 3 5 mm phone jack digital via hdmi and as of revision 2 boards i²s analog hdmi i²s a mini hdmi stereo audio through pwm on gpio micro hdmi on board storage 86 2 mb flash memory sd mmc sdio card slot 3 3 v with card power only microsdhc slot 107 sd mmc sdio card slot microsdhc slot microsdhc slot usb boot mode 132 4 gb emmc flash memory chip 116 microsdhc slot 8 16 32 gb emmc flash memory chip 116 microsdhc slot 8 16 32 gb emmc flash memory chip 116 microsdhc slot microsdhc slot microsdhc slot ethernet 8p8c 86 none none 133 none 10 100 mbit s usb adapter on the usb hub 121 10 100 mbit s 10 100 1000 mbit s real max speed 300 mbit s 134 10 100 1000 mbit s 109 none 10 100 1000 mbit s none none 10 100 1000 mbit s wifi ieee 802 11 wireless none b g n single band 2 4 ghz b g n ac dual band 2 4 5 ghz none b g n single band 2 4 ghz b g n ac dual band 2 4 5 ghz b g n ac dual band 2 4 5 ghz optional b g n single band 2 4 ghz b g n ac dual band 2 4 5 ghz bluetooth none 5 2 b le 4 2 ble 4 1 ble 4 2 ls ble 5 0 109 5 0 ble optional 4 1 ble 4 2 ble 5 0 low level peripherals uart 8 gpio 135 plus the following which can also be used as gpio uart i²c bus spi bus with two chip selects i²s audio 136 3 3 v 5 v ground 137 138 17 gpio plus the same specific functions and hat id bus 8 gpio plus the following which can also be used as gpio uart i²c bus spi bus with two chip selects i²s audio 3 3 v 5 v ground 17 gpio plus the same specific functions and hat id bus 17 gpio plus the same specific functions hat and an additional 4 uart 4 spi and 4 i2c connectors 139 46 gpio some of which can be used for specific functions including i²c spi uart pcm pwm a 140 28 gpio supporting either 1 8v or 3 3v signalling and peripheral options 17 gpio plus the same specific functions and hat id bus 8 power ratings 300 ma 1 5 w 141 200 ma 1 w 142 700 ma 3 5 w 200 ma 1 w average when idle 350 ma 1 75 w maximum under stress monitor keyboard and mouse connected 143 220 ma 1 1 w average when idle 820 ma 4 1 w maximum under stress monitor keyboard and mouse connected 143 300 ma 1 5 w average when idle 1 34 a 6 7 w maximum under stress monitor keyboard mouse and wifi connected 143 459 ma 2 295 w average when idle 1 13 a 5 661 w maximum under stress monitor keyboard mouse and wifi connected 144 600 ma 3 w average when idle 1 25 a 6 25 w maximum under stress monitor keyboard mouse and ethernet connected 143 3 a 15 w power supply recommended 1 200 ma 1 w 700 ma 3 5 w 100 ma 0 5 w average when idle 350 ma 1 75 w maximum under stress monitor keyboard and mouse connected 143 power source microusb or gpio header 1 8 v to 5 v 5 v via microusb or gpio header 5 v via microusb gpio header or poe with the poe hat 5 v via usb c gpio header or poe with the poe hat 2 5 5 v 3 3 v 2 5 3 3 v and 1 8 v a 5 v 5 v via microusb or gpio header size 51 x 21mm 85 6 mm 56 5 mm 3 37 in 2 22 in i 65 mm 56 5 mm 10 mm 2 56 in 2 22 in 0 39 in j 65 mm 56 5 mm 2 56 in 2 22 in 85 60 mm 56 5 mm 3 370 in 2 224 in i 85 60 mm 56 5 mm 17 mm 3 370 in 2 224 in 0 669 in 145 67 6 mm 30 mm 2 66 in 1 18 in 67 6 ...