Tamagotchi iD L and Tamagotchi P's

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Things we know

Tamagotchi Specs

CPU Epson, Romless?
Instruction Set S1C33?
Clock Rate Unknown
ROM 64Mb Macronix flash rom, (likely no internal)
P's Figure SPI (Unknown protocol, likely SPI flash)

Tamagotchi P's Deco Pierce Pinout (facing user)

SDO SCLK SDI
Vcc CS Gnd

Flash rom part number

 MX29LV320DTTI-70G
 --: Macronix
   ----: 3V Parallel flash
       ---: 32Mb
          -: 0.13um
           -: Top Boot
            -: TSOP
             -: Industrial
               --: 70ns
                 -: RoHS

Tamagotchi debug port pinout (top down)

1 2 3 4 5 6 7 8
dst0 dst1 dcpo dsio dst2 dclk Gnd Bat+

External links

S1C33 Instruction set