參數(shù)資料
型號(hào): MC68HC2681P
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 2 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 69/88頁
文件大?。?/td> 726K
代理商: MC68HC2681P
MC68HC2681
A-2
MC68HC681 USER’S MANUAL
MOTOROLA
A
.
Figure A-1. MC68HC2681 Block Diagram
CRYSTAL
OSCILLATOR
BAUD RATE
GENERATOR
CLOCK
SELECTORS
COUNTER/
TIMER
TIMING LOGIC
INTERNAL CONTROL LOGIC
TWO- CHARACTER
Tx BUFFER
FOUR-CHARACTER
Rx BUFFER
CHANNEL A
TWO-CHARACTER
Tx BUFFER
FOUR-CHARACTER
Rx BUFFER
CHANNEL B
RESET
RS1-RS4
CHANGE-OF-
STATE
DETECTORS (4)
INPUT PORT
DATA BUS
BUFFER
INTERRUPT
CONTROL
LOGIC
OUTPUT PORT
EXTERNAL
INTERFACE
TxDA
RxDA
TxDB
RxDB
IP0-IP6
OP0-OP7
X1/CLK
X2
PROCESSOR
INTERFACE
D0-D7
VCC
GND
INTERNAL
DATA
BUS
IRQ
R
W
C
F
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S
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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