MC68HC812A4 Datasheet, PDF (276/342 Pages) Motorola, Inc – 16-bit device composed of standard on-chip peripheral modules connected by an intermodule bus. Modules include

Serial Peripheral Interface (SPI)
15.7.3 SPI Baud Rate Register
Address: $00D2
Bit 7
6
5
4
3
2
1
Bit 0
Read: 0
0
0
0
0
SPR2 SPR1 SPR0
Write:
Reset: 0
0
0
0
0
0
0
0
= Unimplemented
Figure 15-11. SPI Baud Rate Register (SP0BR)
Read: Anytime
Write: Anytime
SPR2–SPR0 — SPI Clock Rate Select Bits
These bits select one of eight SPI baud rates as shown in Table 15-3.
Reset clears SPR2–SPR0, selecting E-clock divided by two.
Table 15-3. SPI Clock Rate Selection
SPR[2:1:0]
000
001
010
011
100
101
110
111
E-Clock
Baud Rate
Baud Rate
Divisor (E-Clock = 4 MHz) (E-Clock = 8 MHz)
2
2.0 MHz
4.0 MHz
4
1.0 MHz
2.0 MHz
8
500 kHz
1.0 MHz
16
250 kHz
500 kHz
32
125 kHz
250 kHz
64
62.5 kHz
125 kHz
128
31.3 kHz
62.5 kHz
256
15.6 kHz
31.3 kHz
MC68HC812A4 — Rev. 3.0
276
Serial Peripheral Interface (SPI)
Advance Information
MOTOROLA