DS1217M Просмотр технического описания (PDF) - Dallas Semiconductor -> Maxim Integrated
Номер в каталоге
Компоненты Описание
Список матч
DS1217M Datasheet PDF : 8 Pages
| |||
DS1217M
DS1217M
Nonvolatile Read/Write Cartridge
FEATURES
PIN ASSIGNMENT
• User-insertable
Name
Position
Name
• 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
Ground A1
B1 No Connect
+5 Volts A2
B2 Address 14
Write Enable A3
B3 Address 12
Address 13 A4
B4 Address 7
Address 8 A5
B5 Address 6
Address 9 A6
B6 Address 5
Address 11 A7
B7 Address 4
Output Enable A8
B8 Address 3
Address 10 A9
B9 Address 2
Cartridge Enable A10
B10 Address 1
Data I/O 7 A11
B11 Address 0
Data I/O 6 A12
B12 Data I/O 0
Data I/O 5 A13
B13 Data I/O 1
Data I/O 4 A14
B14 Data I/O 2
Data I/O 3 A15
B15 Ground
N
• Rugged and durable
• Wide operating temperature range of 0°C to 70°C
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
Share Link: 