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DS3070W fiches techniques PDF

Maxim Integrated Products - Single-Piece 16Mb Nonvolatile SRAM

Numéro de référence DS3070W
Description Single-Piece 16Mb Nonvolatile SRAM
Fabricant Maxim Integrated Products 
Logo Maxim Integrated Products 





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DS3070W fiche technique
www.DataSheet4U.com
Rev 1; 10/06
3.3V Single-Piece 16Mb Nonvolatile SRAM
with Clock
General Description
The DS3070W consists of a static RAM, a nonvolatile
(NV) controller, a year 2000-compliant real-time clock
(RTC), and an internal rechargeable manganese lithium
(ML) battery. These components are encased in a sur-
face-mount module with a 256-ball BGA footprint.
Whenever VCC is applied to the module, it recharges
the ML battery, powers the clock and SRAM from the
external power source, and allows the contents of the
clock registers or SRAM to be modified. When VCC is
powered down or out-of-tolerance, the controller write-
protects the memory contents and powers the clock
and SRAM from the battery. The DS3070W also con-
tains a power-supply monitor output (RST), as well as a
user-programmable interrupt output (IRQ/FT).
Applications
RAID Systems and Servers
POS Terminals
Industrial Controllers
Data-Acquisition Systems
Gaming
Fire Alarms
PLCs
Routers/Switches
Features
o Single-Piece, Reflowable, 27mm x 27mm BGA
Package Footprint
o Internal Manganese Lithium Battery and Charger
o Integrated Real-Time Clock
o Unconditionally Write-Protects the Clock and
SRAM when VCC is Out-of-Tolerance
o Automatically Switches to Battery Supply when
VCC Power Failures Occur
o Reset Output can be Used as a CPU Supervisor
o Interrupt Output can be Used as a CPU Watchdog
Timer
o Industrial Temperature Range (-40°C to +85°C)
o UL Recognized
Ordering Information
PART
DS3070W-100#
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
256-ball 27mm x 27mm BGA Module
SPEED
100ns
#Denotes a RoHS-compliant device that may include lead that is exempt under the RoHS requirements.
SUPPLY VOLTAGE
3.3V ±0.3V
Typical Operating Circuit
CE
WR
RD
CS
MICROPROCESSOR
OR DSP DATA
ADDRESS
INT
INT
8 BITS
21 BITS
CE
WE
OE
CS
DS3070W
2048k x 8
DQ0–7 NV SRAM
AND RTC
A0–20
IRQ/FT
RST
Pin Configuration appears at end of data sheet.
______________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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