spi-nor-core.c > @@ -45,6 +45,12 @@ > > #define DEFAULT_READY_WAIT_JIFFIES (40UL * HZ) > > +/* > + * For full-chip erase, calibrated to a 2MB flash (M25P16); should be > +scaled up > + * for larger flash > + */ > +#define CHIP_ERASE_2MB_READY_WAIT_JIFFIES (...
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When the Program, Erase, Write Status Register or Write Security Register instruction has completed, the BUSY bit will be cleared to a 0 state indicating the device is ready for further instructions. 8.2 Write Enable Latch (WEL Write Enable Latch (WEL is a read only bit in the status ...
This approach works but has an issue - That is, writing to the NOR flash takes significant time (>2ms) and so while this was being done the accelerometer data is lost. In an attempt to prevent this data loss, I moved the accelerometer data read inside the GPIO ISR. However, as I ...
patch file manually int ret; /* Perform default erase operation (non-overlaid portion is erased) */ ret = spi_nor_erase(mtd, instr); if (ret) return ret; /* Backup default erase opcode and size */ opcode = nor->erase_opcode;...
The chips do have a uniform geometry of 4KB "sectors" (minimum erase quanta), but then also 32KB and 64KB "blocks", with unique erase commands for each size. These are all overlapping, so then it seems I will have to choose if I want to set it up as a uniform 4K/...
Boya Microelectronics BY25Q128ALMemory Series 深圳市泰德兰电子有限公司 0755-8332 2522 Features 128M BIT SPI NOR FLASH ● Serial Peripheral Interface (SPI) - Standard SPI: SCLK, /CS, SI, SO, /WP, /HOLD - Dual SPI: SCLK, /CS, IO0, IO1, /WP, /HOLD - Quad SPI: SCLK, /CS, IO0...
Erase Type 1 size 2N Bytes = 4 KB = 0Ch (for Uniform 4 KB) Erase Type 1 instruction Erase Type 2 size 2N Bytes = 32 KB = 0Fh (for Uniform 32 KB) Erase Type 2 instruction Erase Type 3 size 2N Bytes =64 KB = 10h(for Uniform 64 KB) Erase Type 3 instruction Erase Type 4 ...
W25Q32JVUUIQ: FLASH - NOR (SLC) Memory IC 32Mbit SPI - Quad I/O, QPI 133 MHz 6 ns 8-USON (4x3) Mfr. Part#: W25Q32JVUUIQ Mfr.: WINBOND Datasheet: (e-mail or chat us for PDF file) ROHS Status: Quality: 100% Original Warranty: ONE YEAR M...
When the program, erase or write status/security register instruction has completed, the BUSY bit will be cleared to a 0 state indicating the device is ready for further instructions. 7.1.2 Write Enable Latch (WEL) – Status Only Write Enable Latch (WEL) is a read only bit in the status...