MC9S12NE64CPVE Datasheet, PDF (244/554 Pages) Freescale Semiconductor, Inc – MC9S12NE64 Device Overview

Chapter 8 Serial Communication Interface (SCIV3)
START
BIT
BIT 0
BIT 1
BIT 2
8-BIT DATA FORMAT
(BIT M IN SCICR1 CLEAR)
POSSIBLE
PARITY
BIT
BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 STOP
BIT
NEXT
START
BIT
STANDARD
SCI DATA
INFRARED
SCI DATA
START
BIT BIT 0
BIT 1
BIT 2
9-BIT DATA FORMAT
(BIT M IN SCICR1 SET)
BIT 3 BIT 4 BIT 5 BIT 6
POSSIBLE
PARITY
BIT
BIT 7 BIT 8 STOP
BIT
NEXT
START
BIT
STANDARD
SCI DATA
Figure 8-12. SCI Data Formats
INFRARED
SCI DATA
Each data character is contained in a frame that includes a start bit, eight or nine data bits, and a stop bit.
Clearing the M bit in SCI control register 1 configures the SCI for 8-bit data characters. A frame with eight
data bits has a total of 10 bits. Setting the M bit configures the SCI for nine-bit data characters. A frame
with nine data bits has a total of 11 bits
Table 8-11. Example of 8-bit Data Formats
Start
Bit
Data
Bits
Address
Bits
Parity
Bits
Stop
Bit
1
8
0
0
1
1
7
0
1
1
1
7
1¹
0
1
1 _{The address bit identifies the frame as an address}
character. See Section 8.4.5.6, “Receiver Wakeup”.
When the SCI is configured for 9-bit data characters, the ninth data bit is the T8 bit in SCI data register
high (SCIDRH). It remains unchanged after transmission and can be used repeatedly without rewriting it.
A frame with nine data bits has a total of 11 bits.
Table 8-12. Example of 9-Bit Data Formats
Start
Bit
Data
Bits
Address
Bits
Parity
Bits
Stop
Bit
1
9
0
0
1
1
8
0
1
1
1
8
1¹
0
1
1 _{The address bit identifies the frame as an address}
character. See Section 8.4.5.6, “Receiver Wakeup”.
MC9S12NE64 Data Sheet, Rev. 1.1
244
Freescale Semiconductor