Olimex pulls out all 30 I/O on USB-C Raspberry Pi Pico board
Olimex has redesigned the Raspberry Pi Pico board to give access to all 30 I/O lines and more power from a new USB-C connector.
The existing board has 26 accessible lines for the RP2040 dual-core Cortex-M0 system on chip designed by Raspberry Pi.
For its Neo6502 design, Olimex needed to use all 30 GPIOs that are available on the RP2040 chip. However only 26 are available for the user, as GPIO23 controls the power supply, GPIO24 detects if USB is connected, GPIO25 is connected to the status LED, and GPIO29 measures the power supply after the 3.3V voltage regulator.
The resulting RP2040-PICO30 aims to be as compatible as possible with the RP2040-PICO layout, with all the signals in the same places and the four ground lines removed.
The new board also replaces the 0.5A USB micro connector with a USB-C connector that can source up to 3A, adding a SY8089A DC-DC which can deliver up to 3A at 3.3V.
The 2MB board is currently in the prototype stage and will be available for sale in late May for E4.50.A version with soldered headers will be E6.00.
There will also be a version with 16MB Flash for E6.50 without soldered headers and E8.00 with.
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