EC-01F is an NB module developed by Ai-Thinker. The main chip scheme adopted by the NB part is EC616S. The chip has an ultra-highly integrated NB-IoT SoC, supports ultra-low power consumption, and fully supports the 3GPP Rel14 NB-IoT standard. It is an ultra-high cost-effective NB-IoT chip.
It has the following characteristics:

• Integrated radio frequency transceiver, PA, radio frequency filter, antennaswitchand power management.
• Excellent communication performance and stability in various wirelessenvironments.
• Excellent power consumption performance in various modes (PSM, DRX, eDRX, connected state).
• Unique MCU mode, providing lower working current and shorter wake-uptime.

Features:

CPU:

• Cortex-M3, support MPU
• Configurable CPU frequency, up to 204MHz
• 8-channel DMA

Memory:

• 4MB NOR flash on chip
• 272KB on-wafer SRAM, divided into 256KB and 16KB
• 16KB instruction cache

System:

• Flexible configuration supports 1.8/2.8/3.3V IO
• Clock source: 26MHz TCXO or DCXO, 32.768KHz crystal oscillator
• 1 external wake-up source (interrupt)
• Unique MCU mode, in this mode, the internal RC oscillator is used as theclock, and the power consumption is lower
• LOG port,UNILOG
• Debug port,SWD

Peripherals:

• 16 GPIO
• 3 UART,2 SSP,2 I2C
• 6 PWM,6 Timers,6 GPIO counter,1 WDG
• 32KHz RTC timer
• USIM, support Esim
• LPUART
• 4-channel 12-bit AUXADC
• Temperature sensor
• Battery voltage monitoring

Low power consumption:

• Unique low-power architecture, 4-level sleep mode
• PSM:800nA
• DRX(2.56s): typical value 110uA
• RX: typical value10mA
• TX: typical value 24mA

Communication:

• Totally support 3GPP R14 NB-IoT
• Category NB2,2-HARQ
• Multi-tone NPUSCH
• Anchor and non-anchor carrier
• In-band same/different PCI,guardband,standalone
• Multi-carrier paging,NPRACH
• Positioning:OTDOA&ECID
• ROHC,RAI,multiple-DRB,RRC connection re-establish
• SC-PTM(need SW upgrade)

RF:

• Support frequency band:3,5,8
• Chip integrated PA, support APT function
• Chip integrated RF transceiver filter and antenna switch
• Power rating 3

Safety:

• Hardware encryption and decryption module (AES,SHA)
• Secure boot
• flash encryption
• True random number generator

Application:

• Support open-CPU
• The software complies with the CMSIS architecture
• Support mainstream cloud services
• IPv4,IPv6 and non-IP
• UDP,TCP
• DTLS,TLS,SSL
• MQTT,CoAP,HTTP(S)
• LWM2M
• Support FOTA

Voltage range:

• 3.3V to 4.5V

Specifications:

• Model: EC-01F
• Package: SMD-44
• Side: 17.7*15.8*2.8(0.2)mm
• Antenna: External Antenna
• Spectrum Range: Band3, Band5, Band8
• Operating Temperature: -40C ~ 85C
• Storage Environment: -40C ~ 125C, <90%RH
• Power Supply Range: Voltage 3.3V ~ 4.5V, current >500mA
• Support Interface: SSP/UART/I2C/PWM/ADC/GPIO
• Serial Port Rate: Support 110~4608000 bps,default 9600 bps
• Safety: AES/SHA
• Flash: 4MB NOR Flash