MC9S12E32CFU FREESCALE [Freescale Semiconductor, Inc], MC9S12E32CFU Datasheet - Page 250
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MC9S12E32CFU
Manufacturer Part Number
MC9S12E32CFU
Description
HCS12 Microcontrollers
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MC9S12E32CFU.pdf
(606 pages)
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Chapter 8 Serial Communication Interface (SCIV3)
8.3.2.1
Read: anytime
250
SBR[11:8]
TNP[1:0]
SBR[7:0]
Reset
Reset
Field
IREN
Field
6:5
4:0
7:0
7
W
W
R
R
SBR7
IREN
Infrared Enable Bit — This bit enables/disables the infrared modulation/demodulation submodule.
0 IR disabled
1 IR enabled
Transmitter Narrow Pulse Bits — These bits determine if the SCI will transmit a 1/16, 3/16 or 1/32 narrow pulse.
Refer to
SCI Baud Rate Bits — The baud rate for the SCI is determined by the bits in this register. The baud rate is
calculated two different ways depending on the state of the IREN bit.
The formulas for calculating the baud rate are:
SCI Baud Rate Bits — The baud rate for the SCI is determined by the bits in this register. The baud rate is
calculated two different ways depending on the state of the IREN bit.
The formulas for calculating the baud rate are:
SCI Baud Rate Registers (SCIBDH and SCIBDL)
0
0
7
7
When IREN = 0 then,
When IREN = 1 then,
When IREN = 0 then,
When IREN = 1 then,
SCI baud rate = SCI module clock / (16 x SBR[12:0])
SCI baud rate = SCI module clock / (32 x SBR[12:1])
SCI baud rate = SCI module clock / (16 x SBR[12:0])
SCI baud rate = SCI module clock / (32 x SBR[12:1])
Table
TNP1
SBR6
8-3.
0
0
6
6
Figure 8-3. SCI Baud Rate Register High (SCIBDH)
Figure 8-4. SCI Baud Rate Register Low (SCIBDL)
Table 8-1. SCIBDH Field Descriptions
Table 8-2. SCIBDL Field Descriptions
TNP0
SBR5
MC9S12E128 Data Sheet, Rev. 1.07
0
0
5
5
SBR12
SBR4
0
0
4
4
Description
Description
SBR11
SBR3
0
0
3
3
SBR10
SBR2
0
1
2
2
Freescale Semiconductor
SBR9
SBR1
0
0
1
1
SBR8
SBR0
0
0
0
0
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