参数资料
型号: MC68HC11ED0CP2
厂商: FREESCALE SEMICONDUCTOR INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, 2 MHz, MICROCONTROLLER, PDIP40
封装: PLASTIC, DIP-40
文件页数: 82/108页
文件大小: 1672K
代理商: MC68HC11ED0CP2
Serial Communications Interface (SCI)
SCI Registers
MC68HC11ED0 — Rev. 1.0
Technical Summary
Serial Communications Interface (SCI)
RCKB — SCI Baud Rate Clock Check Bit
RCKB can be set only in test modes.
1 = Exclusive-OR of the RT clock driven out TxD pin for testing
purposes
0 = Normal SCI operation
SCR[2:0] — SCI Baud Rate Select Bits
These bits select receiver and transmitter bit rates based on output
from the baud rate prescaler stage. Refer to Table 7-2 and
Table 7-2. Baud Rates
SCR[2:0]
Divide
Prescaler By
Baud Rate
(Prescaler output from Table 7-1)
4800
9600
14.4 k
0 0 0
1
4800
9600
14.4 k
0 0 1
2
2400
4800
7200
0 1 0
4
1200
2400
3600
0 1 1
8
600
1200
1800
1 0 0
16
300
600
1200
1 0 1
32
150
300
450
1 1 0
64
75
150
225
1 1 1
128
37.5
75
112.5
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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