|
|
PDF DS1217A Data sheet ( Hoja de datos )
| Número de pieza | DS1217A | |
| Descripción | Nonvolatile Read/Write Cartridge | |
| Fabricantes | Dallas Semiconducotr | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de DS1217A (archivo pdf) en la parte inferior de esta página. Total 8 Páginas | ||
|
No Preview Available !
DS1217A
DS1217A
Nonvolatile Read/Write Cartridge
FEATURES
• User-insertable
• Capacity up to 32K x 8
• Standard bytewide pinout facilitates connection to
JEDEC 28-pin DIP socket via ribbon cable
• Data retention greater than 10 years
• 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
Position
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
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
B1 No Connect
B2 Address 14
B3 Address 12
B4 Address 7
B5 Address 6
B6 Address 5
B7 Address 4
B8 Address 3
B9 Address 2
B10 Address 1
B11 Address 0
B12 Data I/O 0
B13 Data I/O 1
B14 Data I/O 2
B15 Ground
OFF – ON
3”
DESCRIPTION
The DS1217A is a nonvolatile RAM designed for porta-
ble applications requiring a rugged and durable pack-
age. The nonvolatile cartridge is available in densities
ranging from 2K x 8 to 32K x 8 in 8K byte increments. A
card edge connector is required for connection to a host
system. A standard 30-pin connector can be used for di-
rect mount to a printed circuit board. Alternatively, re-
mote mounting can be accomplished with a 28-conduc-
tor ribbon cable terminated with a 28-pin DIP plug. The
A1
B1
See Mech. Drawings Section
remote method can be used to retrofit existing systems
that have JEDEC 28-pin bytewide memory sites.
The DS1217A cartridge has a lifetime energy source to
retain data and circuitry needed to automatically protect
memory contents. Reading and writing the memory lo-
cations is the same as using conventional static RAM. If
the user wants to convert from read/write memory to
read-only memory, a manual switch is provided to un-
conditionally protect memory contents.
030598 1/8
1 page  
AC ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Read Cycle Time
Access Time
OE to Output Valid
CE to Output Valid
OE or CE to Output Active
Output High Z from
Deselection
tRC
tACC
tOE
tCO
tCOE
tOD
Output Hold from
Address Change
tOH
Write Cycle Time
Write Pulse Width
Address Setup Time
Write Recovery Time
Output High Z from WE
Output Active from WE
Data Setup Time
Data Hold Time from WE
tWC
tWP
tAW
tWR
tODW
tOEW
tDS
tDH
DS1217A
(0°C to 70°C; VCC=5V ± 10%)
MIN
TYP
MAX
UNITS NOTES
250 ns
250 ns
125 ns
250 ns
5 ns 5
125 ns
5
5 ns
250 ns
170 ns 3
0 ns
20 ns
100 ns
5
5 ns 5
100 ns 4
20 ns 4
030598 5/8
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet DS1217A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| DS1217A | Nonvolatile Read/Write Cartridge | Dallas Semiconducotr |
| DS1217M | Nonvolatile Read/Write Cartridge | Dallas Semiconducotr |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |