CPU• Dual-core ARM Cortex™-A7@1.2GHz
• 32KB L1 I-cache + 32KB L1 D-cache per core
• 256KB L2 cache
Memory• Embedded 64MB DDR2(R328-S2) or 128MB DDR3(R328-S3)
• Supports SPI Nand/Nor Flash
Audio• Embedded with VAD voice wake-up module
• Supports 1 audio DAC and 3 audio ADC
• Supports 3 analog audio inputs and 1 analog audio output
• Up to 3 I2S/PCM controllers for connecting Bluetooth and external audio codec, each I2S/PCM supports maximum 16 channels
• Integrated digital microphone, supports maximum 8 digital microphones
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Security Engine• Supports Symmetrical algorithm: AES, DES, 3DES
• Supports Hash algorithm: MD5, SHA, HMAC
• Supports Pubic Key algorithm: RSA
• Supports 160-bit hardware PRNG with 175-bit seed
• Supports 256-bit hardware TRNG
• Supports 1K-bit EFUSE for chip ID and security application
Connectivity• USB 2.0 OTG
• SDIO 3.0
• LEDC
• 2 x TWI, 2 x SPI, 4 x UART
• 8-ch PWM, 4-ch GPADC, 1-ch LRADC
WiFi• XR829 or others
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OS• Linux 4.9
Package• LFBGA 143balls(R328-S2), LFBGA 144balls(R328-S3)
• 9.25mm x 9.15mm body size,0.65mm ball pitch,0.35mm ball size(R328-S2)
• 9.15mm x 11.1mm body size,0.65mm ball pitch,0.35mm ball size(R328-S3)
Process• 28nm HPC
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