The GR851x family is a System-on-Chip (SoC) that integrates a powerful application and security subsystem with NB-IoT cellular communication functionality. It features ultra-low power consumption, high communication reliability, and outstanding application scalability. Based on ARM® Cortex®-M4F CPU core, GR851x integrates an RF transceiver covering both low band (LB) and high band (HB), packaged with programmable Flash memory, RAM, and multiple peripherals. Prepared to support NB-IoT Rel-15, it is an ideal choice for a vast variety of Internet of Things (IoT) application scenarios, including smart meters, asset management, smoke detectors, smart bands, and others.
Application Processor (AP) Sub-system
Cortex®-M4F based scalable core clock: 3.25 MHz ~ 69.3 MHz
AP is independent from CP and is able to reset CP
Up to 128 KB SRAM dedicated for OpenCPU application
Up to 4 MB Flash with XIP
DFOTA
Peripherals, up to 61 IOs
Low-power UART
2 * I2S, 2 * I2C, 2 * UART, 1 * ISO7816, 2 * SPI, and 1 * QSPI
5 * 13-bit ADC
6-channel PWM
8-channel DMA
Timer / Dual timer
SWD
Communication Processing (CP) Sub-system
3GPP Rel-14 supports:
Multi-Carrier support enhancement (NPRACH, Paging)
Cat-NB2 and two HARQ processes
CP re-establishment
AS and NAS release assistance indication
Rel-14 positioning: OTDOA and E-CID
DL channel quality reporting
3GPP Rel-15 supports:
NB-IoT wake-up signal (NWUS)
Dedicated PRACH SR
SR in HARQ ACK
RRC connection release without RLC AM poll
Relaxed monitoring for cell reselection
Power headroom reporting enhancement
Global bands support: 1, 2, 3, 4, 5, 8, 11, 12, 13, 14, 17, 18, 20, 25, 26, 28, 66, 70, 71, 74, 85
DFOTA
Power Management
Wide range voltage input: 1.85 V ~ 4.35 V
Power consumption: 35 µA / MHz
I/O voltage: 1.6 V ~ 3.6 V
Integrated power supply for PA / FEM
BoD
Power-saving mode (PSM), Idle mode
Security
Complete secure computing engine
AES 128-bit / 192-bit / 256-bit symmetric encryption (ECB, CBC, CTR)
Keyed-hash message authentication code (HMAC)
TRNG
Comprehensive security operation mechanism
Root-of-Trust
Secure boot
Encrypted firmware runs directly from Flash
Flexible encrypted key system
Packages
BGA121L: 5.6 mm * 5.6 mm * 0.88 mm, 0.5 mm pitch
QFN58L: 6 mm * 6 mm * 0.75 mm, 0.35 mm pitch, 4-layer PCB supported
Certification (Silicon): China Mobile, China Telecom, Deutsche Telekom
Name | Rights Description | Version | Date |
---|---|---|---|
GR851x Product Brief | For Public | V1.3 | 2022-06-10 |
GR851x Datasheet | Secure File, Please Contact Sales | V1.7 | 2021-10-13 |
GR851x AT Command User Manual | Secure File, Please Contact Sales | V2.3 | 2022-04-27 |
GR851x Hardware Design Guidelines | Secure File, Please Contact Sales | V1.7 | 2022-02-25 |
GR851x OpenCPU User Guide | Secure File, Please Contact Sales | V1.3 | 2021-08-03 |
GR851x FEM & PA QVL Selection Guide | Secure File, Please Contact Sales | V1.1 | 2021-04-15 |
GR8513NMBIN Pro Kit Board | Secure File, Please Contact Sales | V1.3 | 2022-06-10 |
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