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DS1254WB-150

Description
2M x 8 NV SRAM with Phantom Clock
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size317KB,17 Pages
ManufacturerDALLAS
Websitehttp://www.dalsemi.com
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DS1254WB-150 Overview

2M x 8 NV SRAM with Phantom Clock

DS1254WB-150 Parametric

Parameter NameAttribute value
MakerDALLAS
Reach Compliance Codeunknow
DS1254
2M x 8 NV SRAM with Phantom Clock
www.maxim-ic.com
FEATURES
§
Real-time clock (RTC) keeps track of hundredths
of seconds, seconds, minutes, hours, days, date,
months, and years with automatic leap-year
compensation valid up to the year 2100
2M x 8 NV SRAM
Watch function is transparent to RAM operation
Automatic data protection during power loss
Unlimited write-cycle endurance
Surface-mountable BGA module construction
Over 10 years of data retention in the absence of
power
Battery monitor checks remaining capacity daily
+3.3V or +5V operation
PACKAGE OUTLINE
§
§
§
§
§
§
§
§
Side -A- Shown
(For Reference Only, Not to Scale)
Component placement may vary.
ORDERING INFORMATION
PART
DS1254WB-
150
DS1254YB-
100
DS1254WB2-
150
DS1254YB2-
100
PIN-
PACKAGE
BGA, 3.3V
BGA, 5V
BGA, 3.3V
BGA, 5V
TEMP
RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
TOP
MARK
DS1254W-
150
DS1254Y-
100
DS1254W2-
150
DS1254Y2-
100
APPLICATIONS
Telecom Switches
Routers
RAID Systems
TYPICAL OPERATING CIRCUIT
PIN DESCRIPTION
V
CC
A0–A20
DQ0–DQ7
CE
OE
WE
BW
GND
- Supply Voltage
- Address Inputs
- Data I/O
- Chip-Enable Input
- Output-Enable Input
- Write-Enable Input
- Battery Warning Output
(Open Drain)
- Ground
Note:
Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device
may be simultaneously available through various sales channels. For information about device errata, click here:
www.maxim-ic.com/errata.
1 of 17
REV: 082203

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