Yes. The BL mark in the part numbers is an indicator that the part is shipped with a bootloader on it. See below. However, this doesn't mean that the parts without the BL indicator are not capable of using the bootloader. For these parts, customers can flash the bootloader themselves.
| PART | FLASH (KB) | SRAM (KB) | BOOT-LOADER | PIN-PACKAGE |
| MAX32660GWEBL+ | 256 | 96 | Yes | 16 WLP (1.6mm x 1.6mm x 0.65mm, 0.35mm pitch) |
| MAX32660GWEBL+T | 256 | 96 | Yes | 16 WLP (1.6mm x 1.6mm x 0.65mm, 0.35mm pitch) |
| MAX32660GTGBL+ | 256 | 96 | Yes | 24 TQFN-EP (3mm x 3mm x 0.75mm, 0.4mm pitch) |
| MAX32660GTGBL+T | 256 | 96 | Yes | 24 TQFN-EP (3mm x 3mm x 0.75mm, 0.4mm pitch) |
The MAX32660 part numbers without the BL indicator can be flashed with a bootloader. A list of these part numbers can be found on page 25 of the data sheet here: MAX32660 Data Sheet.
The pre-programmed bootloader firmware is outlined under the Bootloader section of datasheets of related micros like shown in the figure below for MAX32660 as Application Note 6471: MAX32660 Bootloader User Guide. This application note is available in the MSDK download/install located here: MSDK Download | Analog Devices. Once installed, this user guide can typically be found in this directory: C:\MaximSDK\Tools\SBT\docs\fbt.
