DS1330AB Maxim, DS1330AB Datasheet

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DS1330AB

Manufacturer Part Number
DS1330AB
Description
The DS1330 256k Nonvolatile (NV) SRAMs are 262,144-bit, fully static, NV SRAMs organized as 32,768 words by 8 bits
Manufacturer
Maxim
Datasheet

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19-5593; Rev 10/10
FEATURES
 10 years minimum data retention in the
 Data is automatically protected during power
 Power supply monitor resets processor when
 Battery monitor checks remaining capacity
 Read and write access times of 70ns
 Unlimited write cycle endurance
 Typical standby current 50µA
 Upgrade for 32k x 8 SRAM, EEPROM or
 Lithium battery is electrically disconnected to
 Full ±10% V
 Optional industrial temperature range of
 PowerCap Module (PCM) package
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 V
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 V
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.
www.maxim-ic.com
absence of external power
loss
V
reset during V
daily
Flash
retain freshness until power is applied for the
first time
or optional ±5% V
(DS1330AB)
-40°C to +85°C, designated IND
-
-
-
-
CC
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
power loss occurs and holds processor in
CC
for an out-of-tolerance condition. When such a condition occurs, the lithium energy source
CC
CC
operating range (DS1330Y)
ramp-up
CC
operating range
1 of 10
PIN ASSIGNMENT
PIN DESCRIPTION
A0 – A14
DQ0 – DQ7
V
GND
NC
CE
WE
OE
RST
BW
GND
CC
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
DQ0
RST
BW
V
WE
NC
NC
OE
CE
CC
(Uses DS9034PC+ or DS9034PCI+ PowerCap)
34-Pin POWERCAP MODULE (PCM)
256k Nonvolatile SRAM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
with Battery Monitor
GND V
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Reset Output
- Battery Warning
- Power (+5V)
- Ground
- No Connect
BAT
DS1330Y/AB
CC
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
and the status
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0

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DS1330AB Summary of contents

Page 1

... Full ±10% V operating range (DS1330Y optional ±5% V operating range CC (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 ...

Page 2

... V to the RAM and disconnects the lithium energy source. Normal RAM operation CC can resume after V exceeds 4.75V for the DS1330AB and 4.5V for the DS1330Y. CC SYSTEM POWER MONITORING DS1330 devices have the ability to monitor the external V power supply condition is detected, the NV SRAMs warn a processor-based system of impending power failure by asserting ...

Page 3

PACKAGES The 34-pin PowerCap module integrates SRAM memory and NV control along with contacts for connection to the lithium battery in the DS9034PC PowerCap. The PowerCap module package design allows a DS1330 PCM device to be surface mounted without subjecting ...

Page 4

... DS1330Y/AB -0.3V to +6.0V 0°C to +70°C -40°C to +85°C -55°C to +125° See Note 10) A TYP MAX UNITS 5.0 5.25 V 5 ± 5% for DS1330AB ± 10% for DS1330Y) CC TYP MAX UNITS µA +1.0 µA +1 µA 200 600 µA 50 150 85 mA 4.62 4. ...

Page 5

... WR2 t ODW t 5 OEW DH1 t 7 DH2 DS1330Y/ +25°C) A MAX UNITS NOTES ± 5% for DS1330AB ± 10% for DS1330Y) CC UNITS NOTES MAX ...

Page 6

WRITE CYCLE 1 SEE NOTES and 12 WRITE CYCLE 2 SEE NOTES and DS1330Y/AB ...

Page 7

POWER-DOWN/POWER-UP CONDITION BATTERY WARNING DETECTION DS1330Y/AB ...

Page 8

POWER-DOWN/POWER-UP TIMING PARAMETER V Fail Detect to and slew from Fail Detect to Active RST CC V slew from Valid to and Inactive CE ...

Page 9

... Outputs Open Cycle = 200ns for operating current All voltages are referenced to ground ORDERING INFORMATION PART DS1330ABP-70+ DS1330ABP-70IND+ DS1330YP-70+ DS1330YP-70IND+ +Denotes a lead(Pb)-free/RoHS-compliant package. *DS9034PC+ or DS9034PCI+ (PowerCap) required. Must be ordered separately. PACKAGE INFORMATION For the latest package outline information and land patterns www.maxim-ic.com/packages. ...

Page 10

... REVISION HISTORY REVISION DATE Updated the storage, lead, and soldering information in the Absolute Maximum Ratings section, removed the unused AC timing specs in 10/10 the AC Electrical Characteristics table, updated the Ordering Information table, replaced the package outline drawing with the Package Information table DESCRIPTION ...

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