参数资料
型号: MC68HC11A0CP3
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 3 MHz, MICROCONTROLLER, PDIP48
封装: PLASTIC, DIP-48
文件页数: 112/158页
文件大小: 3803K
代理商: MC68HC11A0CP3
SERIAL COMMUNICATIONS INTERFACE
MOTOROLA
TECHNICAL DATA
5-13
5
NOTE
The divided frequencies shown in Table 5-3 represent baud rates
which are the highest transmit baud rate (Tx) that can be obtained by
a specific crystal frequency and only using the prescaler division.
Lower baud rates may be obtained by providing a further division us-
ing the SCI rate select bits as shown below for some representative
prescaler outputs.
NOTE
Table 5-4 illustrates how the SCI select bits can be used to provide
lower transmitter baud rates by further dividing the prescaler output
frequency. The five examples are only representative samples. In all
cases, the baud rates shown are transmit baud rates (transmit clock)
and the receiver clock is 16 times higher in frequency than the actual
baud rate.
Table 5-4 Transmit Baud Rate Output for a Given Prescaler Output
SCR Bit
Divided
By
Representative Highest Prescaler Baud Rate Output
2
1
0
131.072 K Baud
32.768 K Baud
76.80 K Baud
19.20 K Baud
9600 Baud
4800 Baud
0
1
131.072 K Baud
32.768 K Baud
76.80 K Baud
19.20 K Baud
9600 Baud
4800 Baud
0
1
2
65.536 K Baud
16.384 K Baud
38.40 K Baud
9600 Baud
4800 Baud
2400 Baud
0
1
0
4
32.768 K Baud
8.192 K Baud
19.20 K Baud
4800 Baud
2400 Baud
1200 Baud
0
1
8
16.384 K Baud
4.096 K Baud
9600 Baud
2400 Baud
1200 Baud
600 Baud
1
0
16
8.192 K Baud
2.048 K Baud
4800 Baud
1200 Baud
600 Baud
300 Baud
1
0
1
32
4.096 K Baud
1.024 K Baud
2400 Baud
600 Baud
300 Baud
150 Baud
1
0
64
2.048 K Baud
512 Baud
1200 Baud
300 Baud
150 Baud
75 Baud
1
128
1.024 K Baud
256 Baud
600 Baud
150 Baud
75 Baud
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相关PDF资料
PDF描述
MC68HC11E0CFU3 8-BIT, 3 MHz, MICROCONTROLLER, PQFP64
MC68HC705C9AFS 8-BIT, UVPROM, 2.1 MHz, MICROCONTROLLER
MC68HC908GZ60CFA 8-BIT, FLASH, 8 MHz, MICROCONTROLLER, PQFP48
MC68HRC705J5ACDWR3 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PDSO20
MC68LNC705C9ACFN 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
相关代理商/技术参数
参数描述
MC68HC11A0FB 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11A0FB1 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11A0FB3 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11A0FB4 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers
MC68HC11A0FN 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:ROM-based high-performance microcontrollers