I feel incredibly future to have been able to purchase a RPI and receive it in the mail.
I am also curious with the scarcity of RPIs available is my pie hot out of the oven?
Or has it been sitting in a box for months...
The ESD bag my PI Zero W came in serialized I believe
Ser: 042227752 (not sure what this means)
There are no obvious date marking on the top layer of the pcb
Bottom side silkscreen perhaps gives a hint?
There is a marking that resembles a datecode but that may related to the pcb fabrication date not pcb assembly date
What about the chips?
Looking up the DRAM POP in Microns PN lookup tool
PN: EDB4432BBPA-1D-F-R
Also referencing Microns general component marking guidelines:
Would suggest the DRAM was manufactured datecode '2I' : 18th week 2022 seems plausible.
DCDC: Diodes PAM2306 (3V3 & 1V8), datecode still unknown
Wi-Fi Module
Appears to be 7th week 2022
Perhaps I can determine the manufacturing date electronically?
Here is the OTP memory block:
08:00000000 09:00000000 10:00000000 11:00000000 12:00000000 13:00000000 14:00000000 15:00000000 16:24280000 17:1020000a 18:1020000a 19:ffffffff 20:ffffffff 21:ffffffff 22:ffffffff 23:ffffffff 24:ffffffff 25:ffffffff 26:ffffffff 27:00005050 28:e77a6d6d 29:18859292 30:009000c1 31:00000000 32:00000000 33:00000000 34:00000000 35:00000000 36:00000000 37:00000000 38:00000000 39:00000000 40:00000000 41:00000000 42:00000000 43:00000000 44:00000000 45:00000000 46:00000000 47:00000000 48:00000000 49:00000000 50:00000000 51:00000000 52:00000000 53:00000000 54:00000000 55:00000000 56:00000000 57:00000000 58:00000000 59:00000000 60:00000000 61:00000000 62:00000000 63:00000000 64:00000000 65:00000000 66:00000000
Based on https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#otp-registers my Pi's serial number OTP element 28: 0xe77a6d6d
Looking at /proc/cpuinfo:
scottie@raspberrypi:~ $ cat /proc/cpuinfo processor : 0 model name : ARMv6-compatible processor rev 7 (v6l) BogoMIPS : 697.95 Features : half thumb fastmult vfp edsp java tls CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x0 CPU part : 0xb76 CPU revision : 7 Hardware : BCM2835 Revision : 9000c1 Serial : 00000000e77a6d6d Model : Raspberry Pi Zero W Rev 1.1
The revision code https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#new-style-revision-codes-in-use just indicates its a PI ZeroW
