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DS1330YP-70 Datasheet

  • DS1330YP-70

  • 256k Nonvolatile SRAM with Battery Monitor

  • 192.35KB

  • 11頁

  • DALLAS   DALLAS

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DS1330Y/AB
256k Nonvolatile SRAM
with Battery Monitor
www.maxim-ic.com
FEATURES
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10 years minimum data retention in the
absence of external power
Data is automatically protected during power loss
Power supply monitor resets processor when
V
CC
power loss occurs and holds processor in
reset during V
CC
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
鹵10%
V
CC
operating range (DS1330Y)
or optional
鹵5%
V
CC
operating range
(DS1330AB)
Optional industrial temperature range of
-40擄C to +85擄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
V
CC
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
15
16
17
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
NC
NC
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
GND V
BAT
34-Pin POWERCAP MODULE (PCM)
(USES DS9034PC POWERCAP)
PIN DESCRIPTION
A0 鈥?A14
DQ0 鈥?DQ7
CE
WE
OE
RST
BW
V
CC
GND
NC
- Address Inputs
- Data In/Data Out
- Chip Enable
- Write Enable
- Output Enable
- Reset Output
- Battery Warning
- Power (+5V)
- Ground
- 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 V
CC
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 V
CC
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.
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DS1330YP-70 產(chǎn)品屬性

  • 40

  • 集成電路 (IC)

  • 存儲器

  • -

  • RAM

  • NVSRAM（非易失 SRAM）

  • 256K (32K x 8)

  • 70ns

  • 并聯(lián)

  • 4.5 V ~ 5.5 V

  • 0°C ~ 70°C

  • 34-PowerCap? 模塊

  • 34-PowerCap 模塊

  • 管件

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