Low Power Single Data Rate Synchronous Dynamic Random-Access Memory


#1

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Current candidates:

  • AS4C64M16MD1: 1Gbit (64M x 16), low Idd Vdd=1.7…1.95V mouser, datasheet

All of these are Vdd=1.8V parts, the STM32F429 is able to run down to 1.7V so that shouldn’t be a problem. It might however make interfacing with the modem awkward since that is designed to run straight off a 4.2V Li-Ion/LiPo battery and the I/O interfaces are 2.8V CMOS levels.

Looks like only the GL865 has 2.8V levels, GL865 v3 has 1.8V levels. I was going to use that one eventually anyways the v3 version has a QFN footprint. The M66 only comes as a 2.8V version, but given how cheap it is I’m just going to deal with that.