Memories

What is the procedure of restoring the memory to the factory state when SPI Status Register 1 = 0x41
This can be done through the SafeBoot recovery option.
I want to set the default value of SR / CR

Attached is part of the report from Infineon.
I would like to use the JTAG interface to fix this problem.

//

#DEFINE ERASE WD=0x06 CE_HI WD=0xDC ADDR_CYCLE4=SA ADDR_CYCLE3=SA ADDR_CYCLE2=SA ADDR_CYCLE1=SA CE_HI WD=0x05 read_status=0bX00XXXX0 CE_HI
#PROGRAM WD=0x06 CE_HI WD=0x12 ADDR_CYCLE4=PA ADDR_CYCLE3=PA ADDR_CYCLE2=PA ADDR_CYCLE1=PA PAGE_SIZE*WD=pd CE_HI WD=0x05 read_status=0bX00XXXX0 CE_HI
#DEFINE PROGRAM WD=0x06 CE_HI WD=0x12 ADDR_CYCLE4=PA ADDR_CYCLE3=PA ADDR_CYCLE2=PA ADDR_CYCLE1=PA WD=pd CE_HI WD=0x05 read_status=0bX00XXXX0 CE_HI
#DEFINE UNLOCK WD=0x06 CE_HI WD=0x01 WD=0x00 CE_HI WD=0x05 read_status=0b00000000 CE_HI
#DEFINE LOCK WD=0x06 CE_HI WD=0x01 WD=0x1C CE_HI WD=0x05 read_status=0b00011100 CE_HI
#READ_PAGE WD=0x13 ADDR_CYCLE4=PA ADDR_CYCLE3=PA ADDR_CYCLE2=PA ADDR_CYCLE1=PA PAGE_SIZE*RD=pd CE_HI
#DEFINE READ_ID WD=0x9F RD=MAN_ID RD=DEV_ID CE_HI
#MAN_ID=0x34
#DEV_ID=0x2A
#PROGRAM_TIME 340 750

Hi All,

currently we are using following part # S25FL256SAGMFV011 in our design but due to stock not available we are looking for closest match part # which can replace the following part # S25FL256SAGMFV011

Hello,
I am trying to write bit 3 of configuration register 3 in a S25HL250T device.  I see in the data sheet that the bit is only writeable in the nonvolatille memory space address 0x000004. 
My sequence is as follows:
read config 3 using a polling transfer routine // read data = 0x04... I was expecting 0x00 based on the data sheet??
data |=  0x08; //set bit 3 of the write data
WRENB_0_0;// write the write enable bit command 0x06

uint8_t command_buff[5] __attribute__ ((aligned (4)));

command_buff[0] = CYPRESS_WRITE_ANY_REG; //0x71
command_buff[1] = 0x00;
command_buff[2] = 0x00;
command_buff[3] = 0x04;
command_buff[4] = new_reg_data;

MSS_QSPI_polled_transfer_block(3, command_buff, 1, (uint8_t*)0, 0,0); 
//Polled transfer variables =(#address bytes, command, # of bytes after command, read buf, #of read bytes, # of idle cycles)

The write seems to work fine, but the register does not get written.
Any help would be appreciated.

Thanks,

Byron

Hello Everyone:

      We are not able to set 'WEL' bit in Status Register 1, or even read back what is written in Memory. We are using a FPGA to interface with Serial Flash S25FL256S... . Below is the sequence of operations.

• Power up
• Wait for Tpu of 300us
• Read JEDC ID (Instruction 0x1F). Correct data is read back.
• Issue WREN (Instruction 0x6)
• Issue Erase Flash Array (Instruction 0x20, address bits[23:0] = 0x0)
• Wait for 11 seconds
• Issue Status register read (RDSR Instruction 0x05), reads back 0x0. Expect WEL (bit 1 to be set since WREN was issued).
• Issue Page Program (PP, Instruction 0x2, address[23:0] = 0x0, 4 Bytes of data).
• Wait for 2 ms (for page program to complete).
• Read Status 1 register, reads back 0x0.
• Read Flash Array (Instruction, 0xB, address [23:0] = 0x0, ), reads back 0xFF all bytes. So data could not be stored.

    I am attaching some waveforms showing the operations.  The file names of waveforms indicate the type of operation being performed. These waveforms are from Xilinx Vivado ILA. The signal names are mapped as below.

SCK:                      jb_cp_mem_clk_OBUF

CS#:                      cp_pMem_csN_OBUF

IO[3:0]:                cp_mem_in_OBUF[3:0]

Below is some information about the operations shown in the waveforms.

1) Read JED ID & Issue WREN.jpg:    This file shows that reading of JEDEC ID is working. After reading the ID, we are issuing 'WREN' Instruction to set the 'WEL' bit.

2) Erase Flash Array (P4E).jpg:     Before writing we are erasing the sector at address 0x0.

3) Read Status register 1, RDSR1 .jpg:    Reading Status Register 1, read back data is 0x0.

4) Page Program & Read Status Register.jpg:   Write data to memory and read Status Register 1, read back data is still 0x0, WIP bit not set.

5) Read Status Register & Read Flash Array.jpg:  Read status register and read data from memory. Status register is still 0x0 and data read from memory is all 0xFF. Four bytes were written and four bytes read back.

     Did we miss anything from the datasheet? Are we doing something incorrectly? Please help!

Thank you so much.

Best regards,

Hi,

I would like to know the Junction- Case Thermal Resistance and Max Junction Temperature for S25FL256SAGMFI001.

Thanks,

Prathik

Hi,

       I was facing the problem in writing and reading the data into the Flash memory of S25HL512T in QSPI mode. I have the Flash to operate in QSPI mode by writing the configuration registers. The following steps are done for write and read the flash memory.

• Writing the memory
  • WRENV_0_0
  • Write command(0x12)
  • Address
  • Input data
• Reading the memory
  • Read command(0xEC)
  • Address

    I was following the above steps, but I was not able to Write/read the memory. Please help to resolve.

Since AMD Flash memory spun off to Spansion and then to Cypress who is part of Infineon I am coming here with a question about how production locations stamped their country on AMD Flash Memory parts in the late 1980s. We received AMD AM9016DL/BFC parts which were supplied by Arrow Electronics back in 1986. Being Arrow only supplies parts received directly from OEMs I expect that the parts are authentic AMD parts. The marking on the bottom of each part is MALAYSIA. This marking located on the bottom is stamped in white ink and is in a slightly different position on each part. Looks like they may be hand stamped, possibly after testing or something. Was this normal for parts produced in 1980s?