# Module Model Guide

## Module Numbering Rule SF32LB5x-MOD-y-AaaaBbbbCccc

* Standard configuration SF32LB525U36, 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 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

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

## SF32LB52-MOD-1 (Official Production Model)

* 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

## SF32LB52-MOD-A

* 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

## SF32LB52-MOD-B

* Compatible with SF32LB52E/G/J, does not support lithium-ion battery power
* Standard configuration SF32LB52EUB6, with 4MB OPI-PSRAM
* Chip power supply voltage: 2.97~3.63V
* Standard QSPI-NOR Flash inside the module
* Other models can be customized as needed

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

## SF32LB56-MOD

* Standard configuration SF32LB566VCB36, with 4+8MB dual OPI-PSRAM + 1MB QSPI-NOR
* Other models can be customized as needed

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

## SF32LB58-MOD

* 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

<!--
## SF32LB55-MOD

* Standard configuration SF32LB555V436, with 8MB OPI-PSRAM + 4MB QSPI-NOR
* Other models can be customized as needed
-->

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?
<? SF32LB55-MOD-D128R8N4 | 128MB SD-NAND | 8MB OPI-PSRAM | 4MB QSPI-NOR | -40~85°C | 18*27?>
-->