GNSS Module Series
LC79D Hardware Design
LC79D_Hardware_Design 12 / 42
PMU
RAM
32KB
RF Front
End
Integrated
LNA
Flash
2MB
GNSS High-
Sensitivity
Measurement
Engine
1PPS
I2C
NSTANDBY
UART/SPI
TCXO
26M
RF_IN
LNA_EN
BOOT
RDY
REQ
AP_REQ
INT
SAW
Filter
SAW
Filter
CPU
ARM Cortex-M4F
ARM CPU Cortex-
M0
(low power)
SRAM
1.125MB
ROM
1MB
32.768K
LC79D
RTC
VCC
VCC_RF
CPU
ARM Cortex-M0
(low power)
L5
L1
LNA
DIP
LNA
XTAL
LC79D (A) only
Figure 1: Block Diagram
2.5. Evaluation Board
In order to facilitate application development with LC79D, Quectel supplies an evaluation board (LC79D
EVB) with a Micro-USB cable, an active antenna and other peripherals to test the module. For more details,
please refer to document [2] and document [3].
2.6. Supported Protocols
Table 4: Supported Protocols
Quectel proprietary protocols
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