EI82C684 데이터 시트보기 (PDF) - IMP, Inc
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EI82C684 Datasheet PDF : 2 Pages
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Semiconductor, Inc.
BLOCK DIAGRAM
Ei68C684
Ei88C684
QUAD UART
TXDx(•)
RXDx
CHANNEL x
TRANSMIT AND
RECEIVE
SHIFT REGISTER
TRANSMIT RECEIVE
HOLDING
FIFO
REGISTER
(3)
MR1x MR2x SRx
INPUT
PORT A
CHANGE
OF
STATE
DETECTORS
(4)
ACRA
IPCRA
INPUT
PORT b
CHANGE
OF
STATE
DETECTORS
(4)
ACRB
IPCRB
OUTPUT
PORT A
FUNCTION
SELECT
LOGIC
OPRA
OPCRA
OUTPUT
PORT B
FUNCTION
SELECT
LOGIC
OPRB
OPCRB
BUS
BUFFER
•
•
OPERATION CONTROL
ADDRESS COMMAND
DECODE DECODE
CRA
CRA
CRA
CRA
•
•
•
INTERNAL DATA BUS
•
•
•
•
INTERRUPT
CONTROL
IVRA
IMRA
ISRA
IVRB
IMRB
IVRB
TIMING
CLOCK SELECTORS
COUNTER
TIMER A
COUNTER
TIMER B
BIT RATE
GENERATOR
CRYSTAL
OSCILLATOR
CSRA CSRC ACRA CTURA CTLRA
CSRB CSRD ACRB CTURB CTLRB
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