EC-01 is a 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 RF transceiver, PA, RF filter, antenna switch and 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 on-chip NOR flash
• 272KB on-wafer SRAM, divided into 256KB and 16KB
• 16KB instruction cache

System:

• Flexible configuration support 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 usedastheclock, 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 value24mA

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 level 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-01
• Package: SMD-54
• Size: 19.2*18.8*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