MC9S12G FREESCALE [Freescale Semiconductor, Inc], MC9S12G Datasheet - Page 582

• Manufacturer Part Number: MC9S12G
• Description: Ignores external trigger. Performs one conversion sequence and stops.
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Serial Communication Interface (S12SCIV5)
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.
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.
582
This document is valid for the S12G96 and the S12G128 device. All information related to other devices is preliminary.
Start
Start
Bit
Bit
Bit 0
Bit 0
Bit 1
Bit 1
1
1
Bit 2
Bit 2
Start
Start
The address bit identifies the frame as an address
character. See
The address bit identifies the frame as an address
character. See
Bit
Bit
1
1
1
1
1
1
Table 18-14. Example of 8-Bit Data Formats
Table 18-15. Example of 9-Bit Data Formats
MC9S12G Family Reference Manual,
Bit 3
Bit 3
(Bit M in SCICR1 Clear)
Figure 18-15. SCI Data Formats
(Bit M in SCICR1 Set)
Data
Data
Bits
Bits
8-Bit Data Format
9-Bit Data Format
8
7
7
9
8
8
Bit 4
Bit 4
Section 18.4.6.6, “Receiver
Section 18.4.6.6, “Receiver
Address
Address
Bit 5
Bit 5
Bits
Bits
1
1
0
0
0
0
1
1
Bit 6
Bit 6
Parity
Parity
Bits
Bits
Possible
0
1
0
0
1
0
Parity
Bit 7
Bit 7
Bit
Wakeup”.
Wakeup”.
Rev.1.01
POSSIBLE
PARITY
STOP
Bit 8
Bit
Bit
Stop
Stop
Bit
Bit
1
1
1
1
1
1
STOP
Start
Next
Bit
Bit
START
NEXT
Bit
Freescale Semiconductor
Standard
SCI Data
Infrared
SCI Data
Standard
SCI Data
Infrared
SCI Data