Chapter 16 Serial Peripheral Interface (S12SPIV4)
MC9S12XDP512 Data Sheet, Rev. 2.11
718 Freescale Semiconductor
Table 16-7. Example SPI Baud Rate Selection (25 MHz Bus Clock)
SPPR2 SPPR1 SPPR0 SPR2 SPR1 SPR0 Baud Rate
Divisor Baud Rate
0 0 0 0 0 0 2 12.5 MHz
0 0 0 0 0 1 4 6.25 MHz
0 0 0 0 1 0 8 3.125 MHz
0 0 0 0 1 1 16 1.5625 MHz
0 0 0 1 0 0 32 781.25 kHz
0 0 0 1 0 1 64 390.63 kHz
0 0 0 1 1 0 128 195.31 kHz
0 0 0 1 1 1 256 97.66 kHz
0 0 1 0 0 0 4 6.25 MHz
0 0 1 0 0 1 8 3.125 MHz
0 0 1 0 1 0 16 1.5625 MHz
0 0 1 0 1 1 32 781.25 kHz
0 0 1 1 0 0 64 390.63 kHz
0 0 1 1 0 1 128 195.31 kHz
0 0 1 1 1 0 256 97.66 kHz
0 0 1 1 1 1 512 48.83 kHz
0 1 0 0 0 0 6 4.16667 MHz
0 1 0 0 0 1 12 2.08333 MHz
0 1 0 0 1 0 24 1.04167 MHz
0 1 0 0 1 1 48 520.83 kHz
0 1 0 1 0 0 96 260.42 kHz
0 1 0 1 0 1 192 130.21 kHz
0 1 0 1 1 0 384 65.10 kHz
0 1 0 1 1 1 768 32.55 kHz
0 1 1 0 0 0 8 3.125 MHz
0 1 1 0 0 1 16 1.5625 MHz
0 1 1 0 1 0 32 781.25 kHz
0 1 1 0 1 1 64 390.63 kHz
0 1 1 1 0 0 128 195.31 kHz
0 1 1 1 0 1 256 97.66 kHz
0 1 1 1 1 0 512 48.83 kHz
0 1 1 1 1 1 1024 24.41 kHz
1 0 0 0 0 0 10 2.5 MHz
1 0 0 0 0 1 20 1.25 MHz
1 0 0 0 1 0 40 625 kHz
1 0 0 0 1 1 80 312.5 kHz
1 0 0 1 0 0 160 156.25 kHz
1 0 0 1 0 1 320 78.13 kHz
1 0 0 1 1 0 640 39.06 kHz