Yes, it certainly looks like that.
I just looked at the differences between the N32G455 and the N32G457 in the data sheet.
They are essentially the same.
Only the N32G457 has the following functions, which are not used in the LCR:
- 1x 10/100M Ethernet interface
- digital video (DVP) interface
I think depending on chip availability they used the 457 when the 455 was not available.
Here is a list of the components on the mainboard that I could identify as a reference.
U100 16 Pin HJ4053 High-Speed CMOS Logic Analog Multiplexer and Demultiplexer
U102 16 Pin HJ4053 High-Speed CMOS Logic Analog Multiplexer and Demultiplexer
U201 8 Pin TL072C (DIP TL07xx Low-Noise FET-Input Operational Amplifiers)
U200 8 Pin MS8052M 250MHz Rail-to-Rail Output CMOS Operational Amplifiers
U300 8 Pin SGM3003 Ultra Low ON-Resistance, Low Voltage, SPDT Analog Switch
U301 8 Pin SGM8052XS 250MHz, Rail-to-Rail Output, CMOS Operational Amplifiers
U302 10 Pin SGM3002 Low On-Resistance, Low Voltage, SPDT Analog Switch
U303 16 Pin HJ4051 High-Speed CMOS Logic Analog Multiplexer and Demultiplexer
U304 16 Pin HJ4051 High-Speed CMOS Logic Analog Multiplexer and Demultiplexer
U305 16 Pin HJ4051 High-Speed CMOS Logic Analog Multiplexer and Demultiplexer
U403 8 Pin MS8052M 250MHz, Rail-to-Rail Output, CMOS Operational Amplifiers
U404 8 Pin MS8052M 250MHz, Rail-to-Rail Output, CMOS Operational Amplifiers
U408 8 Pin MS8052M 250MHz, Rail-to-Rail Output, CMOS Operational Amplifiers
U409 16 Pin HJ4051 (8-CHANNEL ANALOG MULTIPLEXERS/DEMULTIPLEXERS)
U410 16 Pin HJ4051 (8-CHANNEL ANALOG MULTIPLEXERS/DEMULTIPLEXERS)
U1 LQFP 64 Nation N32G457/N32G455 Front
U600 LQFP 64 Nation N32G455 Mainboard
N32G455 series based on 32-bit ARM Cortex-M4F kernel, run up to 144MHz, support floating-point unit and
DSP instructions, up to 512KB embedded flash, 144KB SRAM, 4x12bit 4.7Msps ADC, 4xOPAMP, 7xCOMP,
2x1Msps 12bit DAC. Integrates multi-channel U(S)ART, I2C, SPI, QSPI, USB and CAN communication
interfaces, 1x SDIO interface and built-in cryptographic algorithm hardware acceleration engi
N32G457 series based on 32-bit ARM Cortex-M4F kernel, run up to 144MHz, support floating-point unit and
DSP instructions, up to 512KB embedded flash, 144KB SRAM, 4x12bit 4.7Msps ADC, 4xOPAMP, 7xCOMP,
2x1Msps 12bit DAC. Integrates multi-channel U(S)ART, I2C, SPI, QSPI, USB and CAN communication
interfaces, 1x SDIO interface, and built-in cryptographic algorithm hardware acceleration engi
Differenz zum 455:
1x 10/100M Ethernet interface, digital video (DVP) interface