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Add MB85RS4MTY 4MBit FRAM Chip #33

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merged 2 commits into from
Aug 28, 2024
Merged

Add MB85RS4MTY 4MBit FRAM Chip #33

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2756b58
Add MB85RS4MTY 4MBit FRAM Chip
GlibSkunk Jul 30, 2024
7a67d02
Fix pre-commit failure
GlibSkunk Jul 30, 2024
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7 changes: 7 additions & 0 deletions Adafruit_FRAM_SPI.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ const struct {
{0x04, 0x4803, 256 * 1024UL, true}, // MB85RS2MTA
{0x04, 0x2803, 256 * 1024UL, true}, // MB85RS2MT
{0x04, 0x4903, 512 * 1024UL, true}, // MB85RS4MT
{0x04, 0x490B, 512 * 1024UL, true}, // MB85RS4MTY

// Cypress
{0x7F, 0x7F7f, 32 * 1024UL, false}, // FM25V02
Expand Down Expand Up @@ -410,5 +411,11 @@ bool Adafruit_FRAM_SPI::exitSleep(void) {
spi_dev->endTransactionWithDeassertingCS();
delayMicroseconds(100);

// MB85RS4MTY requires 450us (extra 50us) to wake from "Hibernate"
if (_supported_devices[_dev_idx].manufID == 0x04 &&
_supported_devices[_dev_idx].prodID == 0x0B) {
delayMicroseconds(50);
}

return true;
}