| K20_100 | 10K @ CNY24.56 - 10K @ CNY37.42 | ARM Cortex-M4 | | 100 | | 36 - 128 | 256, 512 | | 4 | External bus interface, SDHC Controller | 4 - 6 | 2, 3 | 2 | 1 (FS) | Device Charge Detect | 2 | 52 - 100 | 16-bit (SAR) x 2 | 12-bit x 2, 12-bit x 1 | 12 | 13 | 4 | Comparator, PGA, VREF | CRC | Touch System Interface | 1.71 | 3.6 | LQFP, WLCSP, MAPBGA | 80 - 144 | 20x20x1.6, 14x14x1.7, 12x12x1.6, 5.3x5.3x0.6, 8x8x1.5, 13x13x1.7 | 0.4 - 1 | -40 to 105, -40 to 85 |
| K20_120 | 10K @ CNY42.38, 10K @ CNY42.72 | ARM Cortex-M4 | Single Precision | 120 | 16.384 | 128, 144 | 512, 1024 | | 16 | External bus interface, NAND Flash Controller, SDHC Controller | 6 | 3 | 2 | 2 (FS and FS/HS) | Device Charge Detect | 2 | 100 | 16-bit (SAR) x 4 | 12-bit x 2 | 20 | 21 | 4 | Comparator, PGA, VREF | CRC | Touch System Interface | 1.71 | 3.6 | LQFP, MAPBGA | 144 | 20x20x1.6, 13x13x1.7 | 0.5, 1 | -40 to 105 |
| K20_50 | 10K @ CNY10.73 - 10K @ CNY18.02 | ARM Cortex-M4 | | 50 | | 8 - 18 | 32 - 160 | | 2 | | 2, 3 | 1 | 1 | 1 (FS) | USB 2.0 FS Certified, Device Charge Detect | | 20 - 40 | 16-bit (SAR) x 1 | | 10 | 11 | 4 | Comparator, VREF | CRC | Touch System Interface | 1.71 | 3.6 | QFN, MAPBGA, LQFP | 32 - 64 | 7x7x0.9, 5x5x0.9, 5x5x1.2, 7x7x1.6, 10x10x1.6 | 0.5, 0.55 | -40 to 105 |
| K20_72 | 10K @ CNY17.06 - 10K @ CNY26.21 | ARM Cortex-M4 | | 72 | | 18 - 66 | 96 - 288 | | 2 | External bus interface | 3 - 5 | 1, 2 | 2 | 1 (FS) | Device Charge Detect | 1 | 40 - 70 | 16-bit (SAR) x 2 | 12-bit x 1 | 12 | 13 | 4 | Comparator, PGA, VREF | CRC | Touch System Interface | 1.71 | 3.6 | MAPBGA, LQFP | 64 - 121 | 8x8x1.5, 12x12x1.6, 14x14x1.7, 10x10x1.6 | 0.5, 0.65 | -40 to 105 |
| K21_120 | 10K @ CNY30.82 - 10K @ CNY36.12 | ARM Cortex-M4 | Single Precision | 120 | | 128, 132 | 640, 1024 | | 4 | External bus interface, SDHC Controller | 5, 6 | 3 | 3 | 1 (FS) | Device Charge Detect | 1 | 81 - 100 | 16-bit (SAR) x 2 | 12-bit x 2 | 12 | 13 | 4 | Comparator, VREF | CRC, Cryptography Accelerator, RNG, Tamper Detection | | 1.71 | 3.6 | MAPBGA, LQFP | 121, 144 | 13x13x1.7, 20x20x1.6, 8x8x1.5 | 0.5 - 1 | -40 to 105 |
| K21_50 | 10K @ CNY18.57 - 10K @ CNY25.11 | ARM Cortex-M4 | | 50 | | 36, 64 | 192 - 512 | | 4 | | 4 | 2 | 2 | 1 (FS) | Device Charge Detect | | 56, 64 | 16-bit (SAR) x 1 | 12-bit x 1 | 12 | 13 | 4 | Comparator | CRC, Cryptography Accelerator, RNG, Tamper Detection | | 1.71 | 3.6 | MAPBGA, LQFP | 80, 121 | 8x8x1.5, 12x12x1.6 | 0.5, 0.65 | -40 to 105 |
| K22_100 | 10K @ CNY11.28 - 10K @ CNY13.14 | ARM Cortex-M4 | Single Precision | 100 | | 24 | 128 | | | | 4 | 2 | 2 | 1 (FS) | Device Crystal-less (FS) | | 40 - 67 | 16-bit (SAR) x 2 | 12-bit x 1 | 12 | 13 | 4 | Comparator, VREF | CRC | | 1.71 | 3.6 | LQFP, MAPBGA, XFBGA | 64 - 121 | 14x14x1.7, 5x5x1.2, 8x8x0.5, 10x10x1.6 | 0.5, 0.65 | -40 to 105 |
| K22_120 | 10K @ CNY18.30 - 10K @ CNY34.40 | ARM Cortex-M4 | Single Precision | 120 | | 48 - 132 | 128 - 1024 | | 4 | External bus interface, SDHC Controller | 3 - 6 | 1 - 3 | 2, 3 | 1 (FS) | Device Crystal-less (FS), USB 2.0 FS Certified, Device Charge Detect | 1 | 40 - 100 | 16-bit (SAR) x 2 | 12-bit x 2, 12-bit x 1 | 12, 20 | 13, 21 | 4 | Comparator, VREF | CRC, RNG | | 1.71 | 3.6 | LQFP, MAPBGA, XFBGA, WLCSP | 64 - 144 | 14x14x1.7, 5x5x1.2, 13x13x1.7, 8x8x1.5, 8x8x0.5, 10x10x1.6, 4.1x3.6x0.6, 20x20x1.6, 12x12x1.6, 3.4x3.3x0.6 | 0.4 - 1 | -40 to 105, -40 to 85 |
| K22_50 | 10K @ CNY14.93 - 10K @ CNY23.39 | ARM Cortex-M4 | | 50 | | 36, 64 | 192 - 512 | | 4 | | 3, 4 | 1, 2 | 1, 2 | 1 (FS) | Device Charge Detect | | 29 - 56 | 16-bit (SAR) x 1 | 12-bit x 1 | 10, 12 | 11, 13 | 4 | Comparator, VREF | CRC | | 1.71 | 3.6 | LQFP, MAPBGA | 48 - 121 | 10x10x1.6, 8x8x1.5, 7x7x1.6, 12x12x1.6 | 0.5 - 0.65 | -40 to 105 |
| K24_120 | 10K @ CNY19.95 - 10K @ CNY45.54 | ARM Cortex-M4 | Single Precision | 120 | | 256 | 256, 1024 | | | External bus interface, SDHC Controller | 5, 6 | 3 | 3 | 1 (FS) | Device Crystal-less (FS), Device Charge Detect | 1 | 66 - 100 | 16-bit (SAR) x 2 | 12-bit x 2, 12-bit x 1 | 20 | 21 | 4 | Comparator, VREF | CRC, Cryptography Accelerator, RNG | | 1.71 | 3.6 | XFBGA, LQFP, WLCSP | 100 - 144 | 8x8x0.5, 20x20x1.6, 14x14x1.7, 4.8x5.6x0.6 | 0.4 - 0.65 | -40 to 105, -40 to 85 |
| K26_180 | 10K @ CNY48.22 - 10K @ CNY59.16 | ARM Cortex-M4 | Single Precision | 180 | 8.192 | 256 | 2048 | | | External bus interface, SDHC Controller | 6 | 3 | 4 | 2 (FS and FS/HS) | Device Charge Detect, Device Crystal-less (FS), HS PHY | 2 | 100, 116 | 16-bit (SAR) x 2 | 12-bit x 2 | 24 | 25 | 4 | Comparator, VREF | CRC, RNG, Cryptography Accelerator | Touch System Interface | 1.71 | 3.6 | MAPBGA, WLCSP, LQFP | 144, 169 | 13x13x1.7, 9x9x1.2, 5.6x5.6x0.6, 20x20x1.6 | 0.4 - 1 | -40 to 105, -40 to 85 |
