參數(shù)資料
型號: MC68HC705C9ACP
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: Microcontrollers
中文描述: 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 101/160頁
文件大小: 2076K
代理商: MC68HC705C9ACP
Serial Communications Interface (SCI)
SCI I/O Registers
MC68HC705C9A — Rev. 4.0
Advance Information
MOTOROLA
Serial Communications Interface (SCI)
For More Information On This Product,
Go to: www.freescale.com
101
9.14.5 Baud Rate Register
The baud rate register (BAUD), shown in
Figure 9-12
, selects the baud
rate for both the receiver and the transmitter.
SCP1 — SCP0–SCI Prescaler Select Bits
These read/write bits control prescaling of the baud rate generator
clock, as shown in
Table 9-1
. Reset clears both SCP1 and SCP0.
$000D
Bit 7
6
5
4
3
2
1
Bit 0
Read:
SCP1
SCP0
SCR2
SCR1
SCR0
Write:
Reset:
0
0
U
U
U
= Unimplemented
U = Undetermned
Figure 9-12. Baud Rate Register (BAUD)
Table 9-1. Baud Rate Generator
Clock Prescaling
SCP[1:0]
Baud Rate Generator Clock
00
Internal Clock
÷
1
01
Internal Clock
÷
3
10
Internal Clock
÷
4
11
Internal Clock
÷
13
F
Freescale Semiconductor, Inc.
n
.
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