mc9s12ne64 Freescale Semiconductor, Inc, mc9s12ne64 Datasheet - Page 267
mc9s12ne64
Manufacturer Part Number
mc9s12ne64
Description
Hcs12 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC9S12NE64.pdf
(554 pages)
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9.3.2.3
Read: anytime
Write: anytime; writes to the reserved bits have no effect
The baud rate divisor equation is as follows:
The baud rate can be calculated with the following equation:
Freescale Semiconductor
SPPR[2:0]
SPR[2:0}
Reset
Field
6:4
2:0
W
R
SPI Baud Rate Preselection Bits — These bits specify the SPI baud rates as shown in
mode, a change of these bits will abort a transmission in progress and force the SPI system into idle state.
SPI Baud Rate Selection Bits — These bits specify the SPI baud rates as shown in
a change of these bits will abort a transmission in progress and force the SPI system into idle state.
SPI Baud Rate Register (SPIBR)
0
0
7
= Unimplemented or Reserved
SPPR2
0
6
Figure 9-5. SPI Baud Rate Register (SPIBR)
BaudRateDivisor
Baud Rate
Table 9-6. SPIBR Field Descriptions
SPPR1
MC9S12NE64 Data Sheet, Rev. 1.1
0
5
=
BusClock BaudRateDivisor
SPPR0
=
0
4
(
SPPR
Description
⁄
+
1
) 2
0
0
3
•
(
SPR
+
1
SPR2
)
0
2
Memory Map and Register Definition
Table
SPR1
Table
0
1
9-7. In master mode,
9-7. In master
SPR0
0
0
267
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