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PDF DS1330AB Data sheet ( Hoja de datos )
| Número de pieza | DS1330AB | |
| Descripción | (DS1330Y / DS1330AB) 256k Nonvolatile SRAM with Battery Monitor | |
| Fabricantes | Dallas Semiconducotr | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de DS1330AB (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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DS1330Y/AB
256k Nonvolatile SRAM
with Battery Monitor
www.maxim-ic.com
FEATURES
§ 10 years minimum data retention in the
absence of external power
§ Data is automatically protected during power loss
§ Power supply monitor resets processor when
VCC power loss occurs and holds processor in
reset during VCC ramp-up
§ Battery monitor checks remaining capacity
daily
§ Read and write access times as fast as 70ns
§ Unlimited write cycle endurance
§ Typical standby current 50mA
§ Upgrade for 32k x 8 SRAM, EEPROM or
Flash
§ Lithium battery is electrically disconnected to
retain freshness until power is applied for the
first time
§ Full ±10% VCC operating range (DS1330Y)
or optional ±5% VCC operating range
(DS1330AB)
§ Optional industrial temperature range of
-40°C to +85°C, designated IND
§ PowerCap Module (PCM) package
- Directly surface-mountable module
- Replaceable snap-on PowerCap provides
lithium backup battery
- Standardized pinout for all nonvolatile (NV)
SRAM products
- Detachment feature on PowerCap allows easy
removal using a regular screwdriver
PIN ASSIGNMENT
BW
NC
NC
RST
VCC
WE
OE
CE
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
GND VBAT
15
16
17
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
34-Pin POWERCAP MODULE (PCM)
(USES DS9034PC POWERCAP)
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
PIN DESCRIPTION
A0 – A14
- Address Inputs
DQ0 – DQ7
- Data In/Data Out
CE - Chip Enable
WE - Write Enable
OE - Output Enable
RST - Reset Output
BW - Battery Warning
VCC
GND
- Power (+5V)
- Ground
NC - No Connect
DESCRIPTION
The DS1330 256k NV SRAMs are 262,144-bit, fully static, NV SRAMs organized as 32,768 words by 8
bits. Each NV SRAM has a self-contained lithium energy source and control circuitry which constantly
monitors VCC for an out-of-tolerance condition. When such a condition occurs, the lithium energy source
is automatically switched on and write protection is unconditionally enabled to prevent data corruption.
Additionally, the DS1330 devices have dedicated circuitry for monitoring the status of VCC and the status
of the internal lithium battery. DS1330 devices in the PowerCap module package are directly surface
mountable and are normally paired with a DS9034PC PowerCap to form a complete NV SRAM module.
The devices can be used in place of 32k x 8 SRAM, EEPROM, or Flash components.
1 of 11
110201
1 page  
WRITE CYCLE 1
SEE NOTES 2, 3, 4, 6, 7, 8, and 12
WRITE CYCLE 2
DS1330Y/AB
SEE NOTES 2, 3, 4, 6, 7, 8, and 13
5 of 11
5 Page 
RECOMMENDED POWERCAP MODULE LAND PATTERN
PKG
DIM
A
B
C
D
E
INCHES
MIN NOM
- 1.050
- 0.826
- 0.050
- 0.030
- 0.112
DS1330Y/AB
MAX
-
-
-
-
-
RECOMMENDED POWERCAP MODULE SOLDER STENCIL
PKG
DIM
A
B
C
D
E
INCHES
MIN NOM
- 1.050
- 0.890
- 0.050
- 0.030
- 0.080
MAX
-
-
-
-
-
11 of 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet DS1330AB.PDF ] | |
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