# Module Model Guide ## Module Numbering Rules SF32LB5x-MOD-y-AaaaBbbbCccc * Standard configuration: SF32LB525U36, co-packaged with 8MB OPI-PSRAM - SF: Chip series - SiFli, company logo - 32: Chip series - 32: 32-bit MCU series - 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: Module subcategory - 1: Series supporting lithium battery power supply, with an onboard SF32LB525UC6/SF32LB527UD6 chip - A: Does not support lithium battery power supply; standard 3.3V power supply series, with an onboard SF32LB52BU36/SF32LB52BU36 chip and co-packaged FLASH - B: Does not support lithium battery power supply; standard 3.3V power supply series, with an onboard SF32LB52DUB6/SF32LB52JUD6 chip and co-packaged PSRAM ### Suffix *AaaaBbbbCccc* - Aaaa: Variable Flash capacity - N16：16MB QSPI-NOR Flash - A128：128MB SPI-Nand Flash - D128：128MB SD-Nand Flash - E4： 4GB eMMC - Bbbb: PSRAM capacity - R4：4MB OPI-PSRAM - R8：8MB OPI-PSRAM - R12：4MB+8MB OPI-PSRAM - R16：16MB OPI/HPI-PSRAM - R32：16+16MB HPI-PSRAM - R64：32+32MB HPI-PSRAM - Cccc: Regularly stocked Flash capacity - N1：1MB QSPI-NOR Flash - N4：4MB QSPI-NOR Flash ## SF32LB52-MOD-1 (official mass-production model) * Used to adapt to SF32LB520/3/5/7 series chips, and supports direct power supply from a lithium-ion battery * Standard configuration: SF32LB525UC6, co-packaged with 8 MB OPI-PSRAM * Chip supply voltage: 3.2–4.7 V (lithium-ion battery powered) * Other models can be customized as needed Module code| Chip | Flash capacity | PSRAM capacity | Ambient temperature | Module dimensions (mm) :- | :-| :-|:-|:-|:- SF32LB52-MOD-1-N16R8 | SF32LB525UC6 | 16MB QSPI-NOR | 8MB OPI-PSRAM | -40~85C | 18*27.9 SF32LB52-MOD-1-A128R16 | SF32LB527UD6 | 128MB SPI-Nand | 16MB OPI-PSRAM | -40~85C | 18*27.9 ## SF32LB52-MOD-A * Used to adapt to SF32LB52B series chips; lithium-ion battery power is not supported * Standard configuration: SF32LB52BU36, co-packaged with 1 MB QSPI-NOR * Chip supply voltage: 2.97–3.63 V * No NOR Flash inside the module * External NOR Flash can be connected, or external SDIO peripherals can be connected, including WiFi, SD-NAND, or eMMC (4-line mode) * Other models can be customized as needed Module code| Chip | Flash capacity | PSRAM capacity | Ambient temperature | Module dimensions (mm) :- | :-| :-|:-|:-|:- SF32LB52-MOD-A-N1 | SF32LB520U36 | 1MB QSPI-NOR | n/a | -40~85C | 18*27.9 ## SF32LB52-MOD-B * Used to adapt to SF32LB52E/G/J; lithium-ion battery power is not supported * Standard configuration: SF32LB52EUB6, co-packaged with 4 MB OPI-PSRAM * Chip supply voltage: 2.97–3.63 V * QSPI-NOR Flash is standard inside the module * Other models can be customized as needed Module code| Chip | Flash capacity | PSRAM capacity | Ambient temperature | Module dimensions (mm) :- | :-| :-|:-|:-|:- SF32LB52-MOD-B-N16R4 | SF32LB52EUB6 | 16MB QSPI-NOR | 4MB OPI-PSRAM | -40~85C | 18*27.9 ## SF32LB56-MOD * Standard configuration: SF32LB566VCB36, co-packaged with dual 4+8 MB OPI-PSRAM + 1 MB QSPI-NOR * Other models can be customized as needed Module code| Variable Flash capacity | PSRAM capacity | Regularly stocked Flash | Ambient temperature | Module dimensions (mm) :-| :-|:-|:-|:-|:- SF32LB56-MOD-N16R12N1 | 16MB QSPI-NOR | 4+8MB OPI-PSRAM | 1MB QSPI-NOR | -40~85C | 18*32.9 SF32LB56-MOD-A128R12N1 | 128MB QSPI-NAND | 4+8MB OPI-PSRAM | 1MB QSPI-NOR | -40~85C | 18*32.9 SF32LB56-MOD-D128R12N1 | 128MB SD-NAND | 4+8MB OPI-PSRAM | 1MB QSPI-NOR | -40~85C | 18*32.9 ## SF32LB58-MOD * Standard configuration: SF32LB586VDD36, co-packaged with dual 16+16 MB HPI-PSRAM + 1 MB QSPI-NOR * eMMC can be internally mounted as needed * Other models can be customized as needed Module code| Variable Flash capacity | PSRAM capacity | Regularly stocked Flash capacity | Ambient temperature | Module dimensions (mm) :-| :-|:-|:-|:-|:- SF32LB58-MOD-N16R32N1 | 16MB QSPI-NOR | 16+16MB HPI-PSRAM | 1MB QSPI-NOR | -40~85C | 24*24 SF32LB58-MOD-A128R32N1 | 128MB QSPI-NAND | 16+16MB HPI-PSRAM | 1MB QSPI-NOR | -40~85C | 24*24 SF32LB58-MOD-E4R32N1 | 4GB eMMC | 16+16MB HPI-PSRAM | 1MB QSPI-NOR | -40~85C | 24*24