MC68HC908MR8 Datasheet, PDF (266/372 Pages) Motorola, Inc – Microcontrollers

Serial Communications Interface (SCI)
PEN — Parity Enable Bit
This read/write bit enables the SCI parity function (see Table 13-4).
When enabled, the parity function inserts a parity bit in the most
significant bit position (see Figure 13-3). Reset clears the PEN bit.
1 = Parity function enabled
0 = Parity function disabled
PTY — Parity Bit
This read/write bit determines whether the SCI generates and checks
for odd parity or even parity (see Table 13-4). Reset clears the PTY
bit.
1 = Odd parity
0 = Even parity
NOTE: Changing the PTY bit in the middle of a transmission or reception can
generate a parity error.
Table 13-4. Character Format Selection
Control Bits
M
PEN:PTY
0
0X
1
0X
0
10
0
11
1
10
1
11
Start
Bits
1
1
1
1
1
1
Character Format
Data
Bits
Parity
Stop
Bits
8
None
1
9
None
1
7
Even
1
7
Odd
1
8
Even
1
8
Odd
1
Character
Length
(Bits)
10
11
10
10
11
11
Technical Data
266
Serial Communications Interface (SCI)
MC68HC908MR8 — Rev 4.1
Freescale Semiconductor