Собственно список - выложен по соответствующим каталогам.
SIM18_Hardware Design_V1.05
SIM18_Jamming Removing_Application Note_V1 00
GNSS_NMEA_Interface_37_1
I2C communications of SIM18
SIM68_EVB kit_User Guide_V1.01
SIM68_NMEA_Specification_V1.00
STA8088_Firmware_Configuration
STA8088_X-Loader_Uaser_Manual
SIM900_AMR File Playing_Application Note_V1.01
SIM900_FOTA_Application Note_V1.00
SIM900_Four-Layer PCB RF Hardware Design_Application Note_V1.01
SIM900 Series module_download procedure_V1.30
SIM900_Hardware Design_V2.03
SIM900B_Hardware Design_V2.02
SIM900D_SIM300D&340D_Comparison_Hardware Design_V1.03
SIMCOM_SIM5215_SIM5216_ATC_EN_V1.21
SIM5215&SIM5216_Hardware_Design_V2.02
SIMCOM_SIM5320_ATC_EN_V1.24
SIM5320_Hardware_Design_V1.07