SDAA287 March   2026 ADS112C04 , ADS112U04 , ADS114S06 , ADS114S08 , ADS122C04 , ADS122U04 , ADS124S06 , ADS124S08 , ADS125H01 , ADS125H02 , ADS1260 , ADS1261 , ADS1262 , ADS1263 , ADS127L01 , ADS127L11 , ADS127L14 , ADS127L18 , ADS127L21 , ADS131A02 , ADS131A04 , ADS131M02 , ADS131M02-Q1 , ADS131M03 , ADS131M03-Q1 , ADS131M04 , ADS131M04-Q1 , ADS131M06 , ADS131M06-Q1 , ADS131M08 , ADS131M08-Q1 , ADS7028 , ADS7038 , ADS7066 , ADS7067 , ADS7128 , ADS7138 , AFE78101 , AFE781H1 , AFE78201 , AFE782H1 , AFE88101 , AFE881H1 , AFE88201 , AFE882H1 , DAC60504 , DAC60508 , DAC61401 , DAC61402 , DAC61404 , DAC61408 , DAC61416 , DAC70504 , DAC70508 , DAC71408 , DAC71416 , DAC7750 , DAC7760 , DAC80504 , DAC80508 , DAC81401 , DAC81402 , DAC81404 , DAC81408 , DAC81416 , DAC8741H , DAC8742H , DAC8750 , DAC8760 , DAC8771 , DAC8775 , HDC3020 , HDC3020-Q1 , HDC3021 , HDC3021-Q1 , HDC3022 , HDC3022-Q1 , LMP90077 , LMP90078 , LMP90079 , LMP90080 , LMP90097 , LMP90098 , LMP90099 , LMP90100 , TMAG5173-Q1 , TMP114 , TMP126 , TMP126-Q1 , TMP1826 , TMP1827

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Browser Based CRC Calculator Example
    1. 2.1 CRC-8-CCITT, 0x00 Initial Value
    2. 2.2 CRC-8-CCITT, 0xFF Initial Value
    3. 2.3 CRC-8-One-Wire, 0xFF Initial Value
    4. 2.4 CRC-16-CCITT, 0xFFFF Initial Value
    5. 2.5 Input and Output Data Reflection
  6. 3Summary
  7. 4References

2.3 CRC-8-One-Wire, 0xFF Initial Value

The polynomial can also be easily changed in the script. For example, the original crc8CCITTZeroes() example has the if statement for the CRC polynomial shown in Figure 2-8.

CRC Polynomial Code Figure 2-8 CRC Polynomial Code

The 0x07 in the XOR is the polynomial and represents the bottom three terms of x8 + x2 + x + 1. The x8 term is the MSB that triggers the XOR.

If the algorithm is changed to CRC-8-One-Wire, a new x8 + x5 + x4 + 1 polynomial is represented by 0x31 and the initial value is 0xFF. Renaming the function, start the crc8OneWireOnes() function with the same crc = 0xFF at the beginning. Change the polynomial calculation with a new XOR as shown in Figure 2-9.

CRC-8-OneWire, Initial Value 0xFF, Calculation Function Figure 2-9 CRC-8-OneWire, Initial Value 0xFF, Calculation Function

Details of the CRC-8-One-Wire algorithm are listed in Table 2-6.

Table 2-4 CRC-8-One-Wire, Initial Value 0xFF
CRC Polynomial Initial Value Devices CRC for 0xABC123
CRC-8-One-Wire x8 + x5 + x4 + 1 (0x31) 0xFF LMP9007x, LMP90080, LMP9009x, LMP90100, HDC302x, HDC302x-Q1 0xF4

Again, when making changes to the JavaScript, also change in the body text describing the CRC function. Then change the calculateCRC() function to call the new CRC calculation. The resulting CRC-8-One-Wire calculation appears in the browser window as shown in Figure 2-10.

CRC Result for 0xABC123, CRC-8-OneWire, Initial Value 0xFF Figure 2-10 CRC Result for 0xABC123, CRC-8-OneWire, Initial Value 0xFF