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TMS320C5515: NOR flash recommendations for boot flash

DJ-NG
Genius 9240 points
Part Number: TMS320C5515

Hi champs,

customer is faced with NOR flash obsolence (MICRON)

He found as possible replacements:

- Winbond W25Q128FW

- MICRON MT25QU128ABA8E12

Q1: Can you confirm, if these flashes are compatible with C5515 ?

Q2: Do we have an actual flash recommendation ist ?

  • 0
    TI__Mastermind 29270 points
    Hi DJ-NG,

    The below list of SPI flashes has been verified with C5535. They should also work on the C5515. The key is to check the datasheet waveform matches the one in this wiki, with no clock cycle delay between address and data.

    processors.wiki.ti.com/.../35_FAQ

    Hope this helps,
    Mark
  • 0 in reply to Mark Mckeown
    TI__Mastermind 29270 points

    Hi DJ-NG,

    I checked the datasheets for these two memories (Winbond W25Q128FW and MICRON MT25QU128ABA8E12).

    Their read data (03h) waveform meets the requirements outlined in the wiki page I linked to.

    Refer also to these requirements from the C5515 Bootloader appnote. (I checked, and they also meet these requirements.)

    2.2.4 24-Bit SPI Serial Flash
    The bootloader supports booting from an SPI Flash with the following requirements for the external device.
    • The device must support at least a 500 kHz SPI clock.
    • The device must be connected to SPI CS0 and act as an SPI slave.
    • The device uses 3 bytes (24 bits) for internal addressing (up to 16MB).
    • The device must have the capability to auto-increment its internal address counter to allow sequential reads from the device.
    • The device can be connected to either valid pin-mapping for SPI (there are two distinct pin-mappings available). The bootloader attempts to communicate on each SPI pin-mapping, one at a time.
    • Any and all write-protect features must be disabled if re-authoring is needed. The bootloader will not attempt to disable these features.

    (24 bit SPI serial flash supports only unencrypted images)

    Hope this helps,
    Mark