Flash Memory Cards for the Newton must be Linear Memory (also known as Attribute Memory) format. ATA Flash RAM is not compatible. RAM cards come in 5v/12v ("Intel Series II") and 5v/5v ("Intel Series II+") models. Although either type is fine in the Newton, the 5v/5v versions are newer and more likely to live on in future Newton/eMate models. 5v/5v cards also generally have lower power requirements.
Card sizes range from 2Mb to 32Mb. Large-capacity cards will work, but Apple recommends no larger than 20Mb. This disclaimer is related to problems in backing up the large cards with NCU/NBU rather than the Newton's ability to actually use them. There will be a corresponding power drain as larger cards are used. For comparison purposes, an 8Mb card (byte-wide operation) was used as a reference point.
(For everything you ever wanted to know about Newton memory, be sure to check out Coan's Flash Memory page.)
|Flash Card||Voltage||Power Consumption|
|AMD AmC0nnCFLKA||5v/5v||45 mA||65 mA||n/a|
|AMD AmD0nnDFLKA||5v/5v||45 mA||65 mA||< 1 uA|
|Intel iMC0nnFLSA||5v/12v||85 mA||80 mA||65 uA|
|Intel iMC0nnFLSP||5v/5v||75 mA||40 mA||125 uA|
|Pretec FR20nn-P||5v/12v||110 mA||70 mA||1.5 mA|
|Pretec FAD0nn-P||5v/5v||60 mA||120 mA||100 uA|
With all due respect to vendors, any credible user reports╣ on current draw -- BATLOG results▓ preferred -- will override manufacturer-provided specs. The "nominal" ratings usually disclosed tend to be on the atypical low end of the spectrum, so I favor "real world" experiences...
If you have a card to add to the comparison chart, the pertinent data. Only cards that are proven to work in a Newton, please. This data may be relevant to non-Newton users as well, but remember, I am biased: only Newton-ready solutions allowed.
September 17, 2001