MC68HC11A1 MOTOROLA [Motorola, Inc], MC68HC11A1 Datasheet - Page 26

• Manufacturer Part Number: MC68HC11A1
• Description: 8-Bit Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

SCCR1 — SCI Control Register 1
R8 — Receive Data Bit 8
T8 — Transmit Data Bit 8
M — Mode (Select Character Format)
26
MOTOROLA
RESET:
If M bit is set, R8 stores ninth bit in receive data character.
If M bit is set, T8 stores ninth bit in transmit data character.
EXTAL
XTAL
0 = Start bit, 8 data bits, 1 stop bit
1 = Start bit, 9 data bits, 1 stop bit
Bit 7
R8
U
CLOCK GENERATOR
OSCILLATOR
T8
AND
U
6
( 4)
E
AS
5
0
0
Figure 8 SCI Baud Rate Diagram
M
4
0
2
2
2
2
2
2
2
0:0
WAKE
SCR[2:0]
3
0
0:0:0
0:0:1
0:1:0
0:1:1
1:0:0
1:0:1
1:1:0
1:1:1
3
0:1
2
0
0
INTERNAL BUS CLOCK (PH2)
4
BAUD RATE
BAUD RATE
TRANSMIT
RECEIVE
1:0
(1X)
(16X)
SCI
1
0
0
SCI
16
$102C
13
Bit 0
0
0
1:1
SCP[1:0]
MC68HC11A8TS/D
SCI BAUD GENERATOR
MC68HC11A8