參數(shù)資料
型號： MC68HC11K4CFU4
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： Technical Summary 8-Bit Microcontroller
中文描述： 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PQFP80
封裝： QFP-80
文件頁數(shù)： 49/80頁
文件大?。?/td> 420K
代理商： MC68HC11K4CFU4
M68HC11 K Series
MC68HC11KTS/D
MOTOROLA
49
7 Serial Communications Interface
The SCI, a universal asynchronous receiver transmitter (UART) serial communications interface, is one
of two independent serial I/O subsystems in M68HC11 K-series MCUs. Rearranging registers and con-
trol bits used in previous M68HC11 family devices has enhanced the existing SCI system and added
new features, which include the following:
A 13-bit modulus prescaler that allows greater baud rate control
A new idle mode detect, independent of preceding serial data
A receiver active flag
Hardware parity for both transmitter and receiver
The enhanced baud rate generator is shown in the following diagram. Refer to
Table 7
for standard val-
ues.
Figure 9 SCI Baud Generator Circuit Diagram
13-BIT COUNTER
13-BIT COMPARE
SCBDH/L
SCI BAUD CONTROL
INTERNAL
PHASE 2 CLOCK
=
÷
2
SYNCH
÷
16
RECEIVER
BAUD RATE
CLOCK
TRANSMITTER
BAUD RATE
CLOCK
EXTAL
RESET
相關(guān)PDF資料
PDF描述
MC68HC11K4MFN2 Technical Summary 8-Bit Microcontroller
MC68HC11K4MFN3 Technical Summary 8-Bit Microcontroller
MC68HC11K4MFN4 Technical Summary 8-Bit Microcontroller
MC68HC11K4VFN4 Technical Summary 8-Bit Microcontroller
MC68HC11KA4TS KPT 3C 3#16 PIN PLUG
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC11K4FN1 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
MC68HC11K4MFN2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC11K4MFN3 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Technical Summary 8-Bit Microcontroller
MC68HC11K4MFN4 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
MC68HC11K4MFS2 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS MICROCONTROLLER UNIT
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