Merge pull request #33 from GlibSkunk/master

Add MB85RS4MTY 4MBit FRAM Chip
adafruit · Aug 28, 2024 · 0d912ef · 0d912ef
2 parents 801479b + 7a67d02
commit 0d912ef
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/Adafruit_FRAM_SPI.cpp b/Adafruit_FRAM_SPI.cpp
@@ -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
@@ -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;
 }