Variation Flash RAM +F +RAM Minimum_with_16_MHz 1192 45 +0 +0 Minimum_with_12_MHz 1312 45 +120 +0 Minimum_with_15_MHz 1298 45 +106 +0 Minimum_with_16_5_MHz 1314 45 +122 +0 Minimum_with_20_MHz 1174 45 -18 +0 With_usbFunctionWrite 1246 45 +54 +0 With_usbFunctionRead 1242 45 +50 +0 With_usbFunctionRead_and_Write 1280 45 +88 +0 With_usbFunctionWriteOut 1208 45 +16 +0 With_Interrupt_In_Endpoint_1 1320 57 +128 +12 With_Interrupt_In_Endpoint_1_and_Halt 1410 57 +218 +12 With_Interrupt_In_Endpoint_1_and_3 1428 69 +236 +24 With_Dynamic_Descriptor 1212 45 +20 +0 With_Long_Transfers 1270 47 +78 +2