K40_100 | 10K @ CNY30.34 - 10K @ CNY37.42 | ARM Cortex-M4 | 100 | 36 - 128 | 256, 512 | | 4 | External bus interface, SDHC Controller | 4 - 6 | 2, 3 | 2 | 1 | 1 (FS) | Device Charge Detect | 1, 2 | 80 - 144 | 16-bit (SAR) x 2 | 12-bit x 2, 12-bit x 1 | 12 | 13 | 4 | Comparator, PGA, VREF | CRC | Touch System Interface, Segment LCD | 1.71 | 3.6 | LQFP, MAPBGA | 20x20x1.6, 13x13x1.7, 14x14x1.7, 12x12x1.6 | 0.5, 1 | -40 to 105 |
K40_72 | 10K @ CNY19.54 - 10K @ CNY28.69 | ARM Cortex-M4 | 72 | 18 - 66 | 96 - 288 | | 2 | | 3 - 5 | 1, 2 | 2 | 1 | 1 (FS) | Device Charge Detect | 1 | 64 - 121 | 16-bit (SAR) x 2 | 12-bit x 1 | 10, 12 | 11, 13 | 4 | Comparator, PGA, VREF | CRC | Touch System Interface, Segment LCD | 1.71 | 3.6 | LQFP, MAPBGA | 12x12x1.6, 10x10x1.6, 8x8x1.5, 14x14x1.7 | 0.5, 0.65 | -40 to 105 |