參數(shù)資料
型號: MC68HC681P
廠商: MOTOROLA 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> 461K
代理商: MC68HC681P
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
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