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STM32G473RCT6 Package TQFP-64 ARM Cortex-M4 170MHz Flash Memory: 256K@x8bit RAM: 128KB MCU (MCU/MPU/SOC) - AliExpress
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This Parallel RAM Expansion Adds 128kB to a Vintage IBM PC — Spread Across Five Breadboards - Hackster.io
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Amazon.com: DORHEA 3Pcs STM32F411 Development Board V3.0 STM32F411CEU6 STM32F4 Learning Board 100Mhz Freq 128KB RAM 512KB ROM for Programming : Electronics
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STM32F401 Development Board V3.0 STM32F401CCU6 STM32F4 Learning Board 84Mhz 96KB RAM 512KB/100Mhz 128KB RAM 512KB - AliExpress
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