Serial NOR Flash (Single, Dual, Quad, Octal mode)

Serial Flash is a compact, low-power flash memory utilizing the SPI interface for data access. It offers advantages over parallel flash, requiring fewer PCB traces, saving space, and reducing costs, making it ideal for applications like BIOS chips in PCs, laptops, TVs, and consumer electronics.

With the rise of smart vehicles, automotive electronics demand safer storage and faster data transmission, leading to the adoption of high-speed Octal NOR Flash. To meet this need, we’ve upgraded our LA4000 series logic analyzers to support Octal NOR Flash decoding and triggering, free of charge. These tools provide high sampling rates and deep memory to facilitate advanced debugging in automotive systems.

Octal NOR Flash

1. Supported Models: LA4068B, LA4136B, BF7264 Pro with LA option

2. Recommended Model: LA4068B

3. Supported Vendors: GigaDevice, ISSI, Infineon, Macronix, Micron, Winbond.

LA4068B

LA4000 series Specifications PDF

Single, Dual, Quad NOR Flash

1. Supported Models: TL4234B, MSO2216B, MSO3124H, MSO3124V, LA4068B, LA4136B, BF7264 Pro with LA option

2. Recommended Model: TL4234B

3. Supported Vendors: Atmel, Boya, Dosilicon, ESMT (EON), FMSH, GaintTec, GigaDevice, Infineon, ISSI, Macronix, Microchip (SST), Micron, NOR-MEM, Puyasemi, Spansion, ST, UCUN, Winbond, XMC, XTX, Zbit.

TL4234B

TL4000 series Specifications PDF

Octal NOR Flash Decode

Duel NOR Flash Decode

Save as TXT/CSV

In Logic Analyzer mode, click the icon above the report area to save the decoded data as a TXT/CSV file.

Protocol Quick Setup

1. Click Quick Settings to select a protocol for logic analyzer capture.

2. Select Serial Flash for decoding.

3. The system provides recommended settings for trigger type, sampling rate, voltage threshold, and channel settings.

4. Click the icon to access the Decode Settings screen.

Decode Settings

Channel: Show the selected channels (CH0 – CH5)

Manufacturer/Device: Select the Serial Flash device type, tCLQV and tSHSL.

QPI mode: Quad Peripheral Interface Mode / Quad SPI Mode

4-Byte mode: 4-Byte Address Mode

PEM mode: Performance Enhance Mode

Dummy Cycles: Clock buffers between read command and data.

Wrap Around: Wrap number

QE bit: Enable or disable the QPI mode.

Decode SI Only: Single mode, 3-wire → CS#, SCLK, SI.

Decode Single Mode Only: Single mode, 4-wire → CS, Clock, SI, SO.

The LA viewer will choose 4-wire or 6-wire to analyze according to the Serial Flash device type.

Trigger Settings

Channel: Select channels.

CS# Glitch Trigger: Trigger the glitch on CS# channel.

tSHSL / tCLQV: Set tSHSL / tCLQV.

Clause Trigger: Please reference Clause Trigger chapter.

State: Show the details of trigger condition in every state as left side; typing or selecting the trigger values in the Command, Address and Data fields, default value is XX means “don’t care”.

Provided the Single / Dual / Quad / Octal mode

Serial Flash (SPI Flash) Decoding Example