MC68HC908KX2 MOTOROLA [Motorola, Inc], MC68HC908KX2 Datasheet - Page 212

• Manufacturer Part Number: MC68HC908KX2
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Serial Communications Interface Module (SCI)
Technical Data
212
SCR2–SCR0 — SCI Baud Rate Select Bits
Use this formula to calculate the SCI baud rate:
where:
Table 14-8
4.9152-MHz CGMXCLK frequency.
These read/write bits select the SCI baud rate divisor as shown in
Table
f
PD = prescaler divisor
BD = baud rate divisor
BAUDCLK
Serial Communications Interface Module (SCI)
Baud rate
14-7. Reset clears SCR2–SCR0.
shows the SCI baud rates that can be generated with a
= baud clock frequency
SCR[2:1:0]
SCP[1:0]
MC68HC908KX8 • MC68HC908KX2 • MC68HC08KX8 — Rev. 1.0
Table 14-6. SCI Baud Rate Prescaling
00
01
10
11
000
001
010
011
100
101
110
111
Table 14-7. SCI Baud Rate Selection
=
----------------------------------- -
64 PD
f
BAUDCLK
BD
Prescaler Divisor (PD)
Baud Rate Divisor (BD)
13
128
1
3
4
16
32
64
1
2
4
8
MOTOROLA