MC68HC908AZ32ACFU MOTOROLA [Motorola, Inc], MC68HC908AZ32ACFU Datasheet - Page 244

• Manufacturer Part Number: MC68HC908AZ32ACFU
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Communications Interface (SCI)
Advance Information
244
SCP1 and SCP0 — SCI Baud Rate Prescaler Bits
SCR2 – SCR0 — SCI Baud Rate Select Bits
Use the following formula to calculate the SCI baud rate:
where:
Freescale Semiconductor, Inc.
These read/write bits select the baud rate prescaler divisor as shown
in
These read/write bits select the SCI baud rate divisor as shown in
Table
f
PD = prescaler divisor
BD = baud rate divisor
Crystal
For More Information On This Product,
Table
SCP[1:0]
SCR[2:1:0]
Serial Communications Interface (SCI)
Baud rate
16-10. Reset clears SCR2–SCR0.
00
01
10
11
000
001
010
011
100
101
110
111
= crystal frequency
16-9. Reset clears SCP1 and SCP0.
Go to: www.freescale.com
Table 16-9. SCI Baud Rate Prescaling
Table 16-10. SCI Baud Rate Selection
=
----------------------------------- -
64 PD BD
f
Crystal
Prescaler Divisor (PD)
Baud Rate Divisor (BD)
13
1
3
4
128
16
32
64
1
2
4
8
68HC908AZ32A — Rev 0.0
MOTOROLA