com20020-5 Standard Microsystems Corp., com20020-5 Datasheet - Page 14
com20020-5
Manufacturer Part Number
com20020-5
Description
Com20020-5 Ulanc Universal Local Area Network Controller With 2k X 8 On-board Ram
Manufacturer
Standard Microsystems Corp.
Datasheet
1.COM20020-5.pdf
(58 pages)
FIGURE 3 - NON-MULTIPLEXED, 6801-LIKE BUS INTERFACE WITH RS-485
6801
XTAL1
XTAL2
D0-D7
nIRQ1
nRES
R/nW
nIOS
A0
A1
A2
A7
47 pF
nRESET IN
nRD/nDS
nWR/DIR
D0-D7
nCS
A0/nMUX
A1
A2/BALE
nINTR
INTERFACE
14
COM20020-5
40 MHz
1K
nPULSE1
nPULSE2
TXEN
RXIN
GND
47 pF
Differential Driver
Configuration
*
Media Interface
may be replaced
with Figure A, B or C.
75ALS176B
or Equiv.
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