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DS1217M Datasheet

  • DS1217M

  • Nonvolatile Read/Write Cartridge

  • Dallas   Dallas

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DS1217M
DS1217M
Nonvolatile Read/Write Cartridge
FEATURES
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
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
Name
No Connect
Address 14
Address 12
Address 7
Address 6
Address 5
Address 4
Address 3
Address 2
Address 1
Address 0
Data I/O 0
Data I/O 1
Data I/O 2
Ground
N
鈥?/div>
User-insertable
鈥?/div>
Data retention greater than 5 years
鈥?/div>
Capacity up to 512K x 8
鈥?/div>
Standard
bytewide pinout facilitates connection to
JEDEC 28-pin DIP via ribbon cable
banks maintain 32 x 8 JEDEC
28-pin compatibility
鈥?/div>
Software-controlled
鈥?/div>
Multiple cartridges can reside on a common bus
鈥?/div>
Automatic
write protection circuitry safeguards
against data loss
鈥?/div>
Manual switch unconditionally protects data
鈥?/div>
Compact size and shape
鈥?/div>
Rugged and durable
鈥?/div>
Wide operating temperature range of 0擄C to 70擄C
3鈥?/div>
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 PDF文件相關(guān)型號

DS1217M1/2-25,DS1217M1-25,DS1217M2-25,DS1217M3-25,DS1217M4-25

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