Datenblatt-pdf.com


DS1217M Schematic ( PDF Datasheet ) - Dallas Semiconducotr

Teilenummer DS1217M
Beschreibung Nonvolatile Read/Write Cartridge
Hersteller Dallas Semiconducotr
Logo Dallas Semiconducotr Logo 




Gesamt 8 Seiten
DS1217M Datasheet, Funktion
DS1217M
DS1217M
Nonvolatile Read/Write Cartridge
FEATURES
User-insertable
Data retention greater than 5 years
Capacity up to 512K x 8
Standard bytewide pinout facilitates connection to
JEDEC 28-pin DIP via ribbon cable
Software-controlled banks maintain 32 x 8 JEDEC
28-pin compatibility
Multiple cartridges can reside on a common bus
Automatic write protection circuitry safeguards
against data loss
Manual switch unconditionally protects data
Compact size and shape
Rugged and durable
Wide operating temperature range of 0°C to 70°C
PIN ASSIGNMENT
Name
Ground
+5 Volts
Write Enable
Address 13
Address 8
Address 9
Address 11
Output Enable
Address 10
Cartridge Enable
Data I/O 7
Data I/O 6
Data I/O 5
Data I/O 4
Data I/O 3
Position
Name
A1 B1 No Connect
A2 B2 Address 14
A3 B3 Address 12
A4 B4 Address 7
A5 B5 Address 6
A6 B6 Address 5
A7 B7 Address 4
A8 B8 Address 3
A9 B9 Address 2
A10 B10 Address 1
A11 B11 Address 0
A12 B12 Data I/O 0
A13 B13 Data I/O 1
A14 B14 Data I/O 2
A15 B15 Ground
N
3”
A1
B1
See Mech. Drawings Section
DESCRIPTION
The DS1217M is a nonvolatile RAM designed for porta-
ble applications requiring a rugged and durable pack-
age. The Nonvolatile Cartridge has memory capacities
from 64K x 8 to 512K x 8. The cartridge is accessed in
continuous 32K byte banks. Bank switching is accom-
plished under software control by pattern recognition
from the address bus. A card edge connector is required
for connection to a host system. A standard 30-pin con-
nector can be used for direct mount to a printed circuit
board. Alternatively, remote mounting can be accom-
plished with a ribbon cable terminated with a 28-pin DIP
plug. The remote method can be used to retrofit existing
systems which have JEDEC 28-pin bytewide memory
sites.
030598 1/8






DS1217M Datasheet, Funktion
DS1217M
READ CYCLE (1)
ADDRESSES
CE
OE
DOUT
tRC
VIH
VIL
VIH
tACC
tCO
VIL
VIH tOE
VIL
tCOE
tCOE
VIH
VIL
VIH
VIH
VIL
tOH
tOD
VIH
tOD
VVOOHL
OUTPUT
DATA VALID
VVOOLH
WRITE CYCLE 1 (2), (6), (7)
ADDRESSES
CE
WE
DOUT
VIH
VIL
tAW
VIH
tODW
DIN
WRITE CYCLE 2 (2), (8)
ADDRESSES
CE
WE
DOUT
DIN
VIH
VIL
tAW
VIH
VIL
tCOE
tWC
VIH VIH
VIL VIL
VIL VIL
tWP
VIL VIL
HIGH
IMPEDANCE
tWR
VIH
tOEW
tDS tDH
VIH
DATA IN
STABLE
VIL
VIH
VIL
tWC
tWP
VIL VIL
VIL VIL
tODW
VIH
VIL
tWR
VIH
VIH
VIH
VIL
tDS tDH
VIH VIH
DATA IN
STABLE
VIL VIL
030598 6/8

6 Page







SeitenGesamt 8 Seiten
PDF Download[ DS1217M Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
DS1217ANonvolatile Read/Write CartridgeDallas Semiconducotr
Dallas Semiconducotr
DS1217MNonvolatile Read/Write CartridgeDallas Semiconducotr
Dallas Semiconducotr

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche