# SiFli Chip Model Guide ## Chip numbering rule: SF32LB5xyZxYx6 ### Prefix: *SF32LB5xy* - SF: Chip series - SiFli, company logo - There is also an SSxxxx series, which is not included here for now - 32: Chip series - 32: 32-bit MCU series - 30: PMU series; subsequent models in this series are all digits, such as SF30147, and do not follow the numbering rules below - LB: Series attribute - LB：Low-power Bluetooth MCU - VB: Bluetooth MCU using a RISC-V processor - 5: Processor series - 5: Based on a 32-bit Arm Cortex-M33 Star-MC1 processor, or a RISC-V processor with similar computing performance - 0: Based on a 32-bit Arm Cortex-M0+ processor - x: High-, mid-, and low-end positioning - 8: Flagship product in the 5x series - 6/5: Mid-range product in the 5x series - 2: Cost-effective product in the 5x series - y: product positioning within the series - Generally determined based on the capacity of the internally packaged PSRAM; the specific number depends on the specific chip ### Suffix: *ZxYx6* - Z: package - U: QFN package - V: BGA package - xYx: capacity code for internally packaged NOR Flash or PSRAM; the number of characters and combinations depend on the specific package - x is a digit: internally packaged NOR Flash capacity - 1：2Mb - 2：4Mb - 3：8Mb - 4：16Mb - 5：32Mb - 6：64Mb - X is a letter: internally packaged PSRAM capacity - A：16Mb QPI-PSRAM - B：32Mb OPI-PSRAM - C：64Mb OPI-PSRAM - D：128Mb OPI/HPI-PSRAM - E：256Mb HPI-PSRAM - 6: temperature range - 5：-20~70C - 6：-40~85C ```{important} Note that the company's official name is SiFli, with S and F uppercase and the rest lowercase, meaning Silicon Fli (Fly); Sifli, sifli, and SiFLi are all incorrect spellings. ``` ```{note} **Abbreviated Terms Used Below** - NOR:   QSPI NOR Flash - QPI-P:   x4-PSRAM - OPI-P:   x8-PSRAM - HPI-P:   x16-PSRAM ``` ## List of Key SF32LB52x/X Series Models - SF32LB52x/X： - x is a digit, indicating the ***lithium-ion battery powered*** series, such as SF32LB520/3/5/7, which are pin-to-pin compatible with each other - X is certain letters, indicating the ***standard 3.3 V*** power supply series, including SF32LB52B/E/G/J, which are pin-to-pin compatible with each other - X is certain letters, indicating the ***special 1.8 V*** power supply series, including SF32LB52D, for ultra-low-power scenarios - The two series, one where x is a digit and the other where X is a letter, are independent of each other and are ***not*** pin-to-pin compatible. Although the 3.3 V models and 1.8 V models can be pin-to-pin aligned, their voltages are incompatible, so they are also incompatible. The correspondence in terms of co-packaged content is: - Li-ion  3.3 V  1.8 V - 520 -- 52B - 523 -- 52E -- 52D - 525 -- 52G - 527 -- 52J - The SF32LB52x series supports the following display interfaces - SPI/DSPI/QSPI, including the SPI interface for e-paper displays - 8080-8bit Part # | 520U36 | 523UB6 | 525UC6 | 527UD6 | 52BU36 | 52BU56 | 52DUB6 | 52EUB6 | 52GUC6 | 52JUD6 :-|-:|-:|-:|-:|-:|-:|-:|-:|-:|-: Package | QFN68L | QFN68L | QFN68L | QFN68L | QFN68L | QFN68L | QFN68L | QFN68L | QFN68L | QFN68L Sizes | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm | 7x7x0.85 mm Pitch | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.35mm \# of GPIOs | 44 | 44 | 44 | 44 | 45 | 45 | 45 | 45 |45 |45 MPI1 SiP | 1MB NOR | 4MB OPI-P | 8MB OPI-P | 16MB OPI-P | 1MB NOR | 4MB NOR | 4MB OPI-P | 4MB OPI-P | 8MB OPI-P |16MB OPI-P Power Supply | 3.2~4.7V | 3.2~4.7V | 3.2~4.7V | 3.2~4.7V | **3.3V** | **3.3V** | **1.8V** | **3.3V** |**3.3V** |**3.3V** I/O Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V/1.8V | 3.3V/1.8V | 3.3V/1.8V | 3.3V/1.8V |3.3V/1.8V |3.3V/1.8V Temperature | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C |-40~85C |-40~85C ## List of Key SF32LB56x Series Models - The SF32LB56x series supports the following display interfaces - DPI/RGB888, RGB565 (566VCB36 and 567VND36) - SPI/DSPI/QSPI, including the SPI interface for e-paper displays - 8080-8bit (566VCB36 and 567VND36QFN68L only; not fully pinned out on QFN models) Part # | 560UNN26 | 561UBN26 | 563UCN26 | 56WUND26 | 566VCB36 | 567VND36 :-|-:|-:|-:|-:|-:|-: Package | QFN68L | QFN68L | QFN68L | QFN68L | BGA175 | BGA175 Sizes | 7x7x0.75 mm | 7x7x0.75 mm | 7x7x0.75 mm | 7x7x0.75 mm | 6.1x6.5x0.94 mm | 6.1x6.5x0.94 mm Pitch | 0.35mm | 0.35mm | 0.35mm | 0.35mm | 0.4mm | 0.4mm HCPU GPIOs | 24 | 24 | 24 | 24 | 79 | 79 LCPU GPIOs | 20 | 20 | 20 | 20 | 41 | 41 MPI5 Boot SiP | 512KB NOR | 512KB NOR | 512KB NOR | 512KB NOR | 1MB NOR | 1MB NOR MPI1 SiP | n/a | 4MB OPI-P | 8MB OPI-P | n/a | 8MB OPI-P | n/a MPI2 SiP | n/a | n/a | n/a | 16MB OPI-P | 4MB OPI-P | 16MB OPI-P Display Interface | QSPI | QSPI | QSPI | QSPI | DPI/QSPI/8080/JDI | DPI/QSPI/8080/JDI Power Supply | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V Temperature | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C ## List of Key SF32LB58x Series Models - All SF32LB58x series models support the following display interfaces - MIPI-DSI, CMD mode or Video mode - DPI/RGB888，RGB565 - SPI/DSPI/QSPI, including the SPI interface for e-paper displays - 8080-8bit - JDI MIP display interface - Supports dual displays with different content via MIPI-DSI + SPI/DSPI/QSPI Part # | 580VNN36 | 581VCN36 | 583VCC36 | 585V5E56 | 586VDD36 | 587VEE56 :-|-:|-:|-:|-:|-:|-: Package | BGA256 | BGA256 | BGA256 | BGA256 | BGA256 | BGA256 Sizes | 6.5x8.5x0.94 mm | 6.5x8.5x0.94 mm | 6.5x8.5x0.94 mm | 6.5x8.5x0.94 mm | 6.5x8.5x0.94 mm | 6.5x8.5x0.94 mm Pitch | 0.4mm | 0.4mm | 0.4mm | 0.4mm | 0.4mm | 0.4mm HCPU GPIOs | 94 | 94 | 94 | 94 | 94 | 94 LCPU GPIOs | 66 | 66 | 66 | 66 | 66 | 66 MPI5 Boot SiP | 1MB NOR | 1MB NOR | 1MB NOR | 4MB NOR | 1MB NOR | 4MB NOR MPI1 SiP | n/a | 8MB OPI-P | 8MB OPI-P | 4MB NOR | 16MB HPI-P | 32MB HPI-P MPI2 SiP | n/a | n/a | 8MB OPI-P | 32MB HPI-P | 16MB HPI-P | 32MB HPI-P Power Supply | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V Temperature | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C | -40~85C ## List of Key SF32LB55x Models - Because the SF32LB55x series was defined relatively early, its suffix numbers do not fully follow the above rules. Only 557V3DA6 uses the above suffix naming rules. - Models in the same package are pin-to-pin compatible. - Depending on the package, the SF32LB55x series supports all or some of the following display interfaces. - MIPI-DSI，CMD mode - DPI/RGB888，RGB565 - SPI/DSPI/QSPI, including the SPI interface for e-paper displays - 8080-8bit - JDI/Sharp MIP display interface (557VD3A6) - Supports MIPI-DSI + SPI/DSPI dual displays with different content (557VD3A6) Part # | SS6600A8 | 551U4O5 | 555V4O6 | 555V436 | 557VD3A6 -|-:|-:|-:|-:|-: Package | QFN68L | QFN68L | BGA145 | BGA145 | BGA169 Sizes | 7x7x0.75 mm | 7x7x0.75 mm | 7x7x0.94 mm | 7x7x0.94 mm | 7x7x0.94 mm Pitch | 0.35mm | 0.35mm | 0.5mm | 0.5mm | 0.5mm HCPU GPIOs | 28 | 28 | 55 | 55 | 71 LCPU GPIOs | 21 | 21 | 40 | 40 | 42 QSPI1-L Boot SiP | 4MB NOR | 4MB NOR | 4MB NOR | 4MB NOR | 1MB NOR QSPI1-H SiP | 4MB NOR | n/a | n/a | n/a | n/a PSRAM SiP | n/a | 4MB OPI-P | 4MB OPI-P | 8MB OPI-P | 16MB OPI-P QSPI4 SiP | n/a | n/a | n/a | n/a | 2MB QPI-P Display Interface | QSPI/8080 | QSPI/8080 | MIPI/QSPI/8080 | MIPI/QSPI/8080 | MIPI/QSPI/8080/JDI Power Supply | 2.97V~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V | 1.71~3.63V Temperature | -20~70C | -20~70C | -40~85C | -40~85C | -40~85C ```{note} - SS6600A8 integrates two 4 MB QSPI-NOR devices and is configured to operate as a single 8 MB OSPI-NOR device. ``` ## Chip Model Comparison Table ## Sample Availability Retail samples and small quantities can be purchased directly on [Taobao](https://sifli.taobao.com/). Volume customers can email sales@sifli.com or contact customer service on Taobao to obtain sales contact information. Participants in open source projects can apply for free samples. You can join QQ group 674699679 for discussion.