Module Model Guide¶

Module Numbering Rule SF32LB5x-MOD-y-AaaaBbbbCccc¶

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 with RISC-V processor
5: Processor series
- 5: Based on 32-bit Arm Cortex-M33 Star-MC1 processor, or similar RISC-V processor
- 0: Based on 32-bit Arm Cortex-M0+ processor
x: High, medium, or low positioning
- 8: Flagship product of the 5x series
- 6/5: Mid-range product of the 5x series
- 2: Cost-effective product of the 5x series
y: Module subcategory
- 1: Series supporting lithium battery power, with SF32LB525UC6/SF32LB527UD6 chips on board
- A: Series not supporting lithium battery power, with SF32LB52BU36/SF32LB52BU36 chips on board, with integrated FLASH
- B: Series not supporting lithium battery power, with SF32LB52DUB6/SF32LB52JUD6 chips on board, with integrated PSRAM

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: Standard Flash capacity
- N1: 1MB QSPI-NOR Flash
- N4: 4MB QSPI-NOR Flash

Compatible with SF32LB520/3/5/7 series chips, supports direct lithium-ion battery power
Standard configuration SF32LB525UC6, with 8MB OPI-PSRAM
Chip power supply voltage: 3.2~4.7V (lithium-ion battery power)
Other models can be customized as needed

Module Code	Chip	Flash Capacity	PSRAM Capacity	Operating Temperature	Module Size (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

Compatible with SF32LB52B series chips, does not support lithium-ion battery power
Standard configuration SF32LB52BU36, with 1MB QSPI-NOR
Chip power supply voltage: 2.97~3.63V
No NOR Flash inside the module
External NOR Flash or SDIO peripherals can be attached, including WiFi, SD-NAND, or eMMC (4-line mode)
Other models can be customized as needed

Module Code	Chip	Flash Capacity	PSRAM Capacity	Operating Temperature	Module Size (mm)
SF32LB52-MOD-A-N1	SF32LB520U36	1MB QSPI-NOR	n/a	-40~85C	18*27.9

Module Code	Chip	Flash Capacity	PSRAM Capacity	Operating Temperature	Module Size (mm)
SF32LB52-MOD-B-N16R4	SF32LB52EUB6	16MB QSPI-NOR	4MB OPI-PSRAM	-40~85C	18*27.9

Module Code	Variable Flash Capacity	PSRAM Capacity	Standard Flash	Operating Temperature	Module Size (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

Standard configuration SF32LB586VDD36, with 16+16MB dual HPI-PSRAM + 1MB QSPI-NOR
eMMC can be internally mounted as needed
Other models can be customized as needed

Module Code	Variable Flash Capacity	PSRAM Capacity	Standard Flash Capacity	Operating Temperature	Module Size (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

Module Code	Variable Flash Capacity	PSRAM Capacity	Standard Flash	Operating Temperature	Module Size (mm)
SF32LB55-MOD-N16R8N4	16MB QSPI-NOR	8MB OPI-PSRAM	4MB QSPI-NOR	-40~85°C	18*27?
SF32LB55-MOD-A128R8N4	128MB QSPI-NAND	8MB OPI-PSRAM	4MB QSPI-NOR	-40~85°C	18*27?

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