In terms of the performance and the software, basically there is no difference between these two modules. The only difference is the Hardware Encryption for AES.
CMWX1ZZABZ-078 carries this function, but CMWX1ZZABZ-091 does not. Besides, the price is the same for both modules.
| PART NUMBER |
CMWX1ZZABZ-078 |
CMWX1ZZABZ-091 |
| Chipset |
SEMTECH |
SX1276 |
| ST MCU |
STM32L082 |
STM32L072 |
| External Host MCU |
No |
| Frequency (MHz) |
860 to 930 |
| Secure Element |
No |
| Hardware AES-128bit Accelerator |
Yes |
No |
| Software |
Test Firmware |
| Availability (Status) |
In Mass Production |
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