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WP-2 IC-Card MRAM 512K shielded

bkw777·WP-2_IC-Card·PCB/WP-2_IC-Card_MRAM_512K_shielded.kicad_pcb

WP-2 IC-Card MRAM 512K shielded PCB layout, top view — open source board by bkw777
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About the WP-2 IC-Card MRAM 512K shielded PCB

WP-2 IC-Card MRAM 512K shielded is an open source PCB design by bkw777, published on GitHub under the Custom license license. It is a 2-layer board measuring 54 × 54 mm, with 27 components from 10 distinct parts.

Other key parts include the MR2A08ACYS35, MIC5317-3.3YD5 and 74LVC4245APW,118. By type, the board carries 12 capacitors, 6 ICs, 4 resistors, 2 switches, 1 connector and 1 diode.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

IC Cards for TANDY WP-2

The TANDY WP-2 and other clones of the Citizen CBM-10WP have an expansion slot that accepts "IC Cards".

Here are a few different cards to fit that slot.

A battery-backed SRAM card like the original cards A non-volatile MRAM card, a RAM card that doesn't need a battery A ROM card, there is new software that runs from a rom card but no known images of any old original rom cards A programming adapter that can read and write both the RAM and ROM cards outside of the WP-2 * A bus-tap/breakout card to allow connecting the bus to a breadboard or logic analyser etc

WP-2 IC-Card MRAM 512K shielded, from the project README
From the project README

Main components on the WP-2 IC-Card MRAM 512K shielded

MR2A08ACYS35MIC5317-3.3YD574LVC4245APW,118

WP-2 IC-Card MRAM 512K shielded bill of materials (BOM)

27 components, 10 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MR2A08ACYS35
MR2A08xxYSxxx
U1
1
MIC5317-3.3YD5
U2
4
74LVC4245APW,118
4245
U3, U4, U5, U6
1
SMS-138-01-G-S
J1
1
WP-2_IC-Card_Cover_MRAM_512
N1
1
MS226-10S
S1
1
CUS-14TB
SW1
1
BAT54CDW-7-F
BAT54CDW
D1
12
CL21A105KBCLNNC
1u
C1, C2, C3, C4, C5, C6, C7, C8 +4
4
RMCF0805FT200K
200k
R1, R2, R3, R4

WP-2 IC-Card MRAM 512K shielded design files

The KiCad project lives in the bkw777/WP-2_IC-Card repository on GitHub; these links point at the commit this page was built from.

WP-2 IC-Card MRAM 512K shielded: common questions

How big is the WP-2 IC-Card MRAM 512K shielded PCB?

The WP-2 IC-Card MRAM 512K shielded measures 54 × 54 mm, has 2 copper layers and is 1.2 mm thick.

How many components are on the WP-2 IC-Card MRAM 512K shielded?

27 components, from 10 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the WP-2 IC-Card MRAM 512K shielded design files?

From the bkw777/WP-2_IC-Card repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the WP-2 IC-Card MRAM 512K shielded design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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