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DS1245Y-70+

Name: DS1245Y-70+
Rating: 4.7 (12 reviews)

IC NVSRAM 1MBIT PARALLEL 32EDIP

製造商
製造商。部分 #DS1245Y-70+
包 32-DIP Module (0.600, 15.24mm)
資料表 DS1245Y-70+ DataSheet
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規格

Supplier	Analog Devices Inc./Maxim Integrated
Package	Tube
ProductStatus	Obsolete
MemoryType	Non-Volatile
MemoryFormat	NVSRAM
Technology	NVSRAM (Non-Volatile SRAM)
MemorySize	1Mb (128K x 8)
MemoryInterface	Parallel
WriteCycleTime-WordPage	70ns
AccessTime	70 ns
Voltage-Supply	4.5V ~ 5.5V
OperatingTemperature	0°C ~ 70°C (TA)
MountingType	Through Hole
Package/Case	32-DIP Module (0.600, 15.24mm)

概述

Description

DS1245Y-70+ is Dallas/Maxim’s battery-backed nonvolatile SRAM (NVSRAM) with an integrated real-time clock/calendar. It provides RAM that retains data when main power is lost, using an onboard backup battery, plus timekeeping registers for time-stamped data. The “-70+” typically indicates a 70 ns access time and a Pb-free/extended-temp variant. It uses an 8-bit parallel interface (address, data, and control lines) and is used in applications where data must survive power outages and timekeeping must continue (e.g., BIOS parameters, caches, data logs). For exact memory size, pinout, power requirements, and timing, consult the DS1245Y-70+ datasheet.

Features

DS1245Y-70+ features (concise):
- Nonvolatile SRAM (NVSRAM) with battery backup
- Memory organization: 64K × 8 (parallel 8-bit I/O)
- Access time: 70 ns
- 5 V operation; internal backup battery supports data retention during power loss
- Power-fail data preservation with automatic write-back
- Write protection: WP/CS control for safe data handling
- Unlimited write endurance (NVSRAM, no wear-out like EEPROM)
- 8-bit data bus, random access memory interface
- Industrial temperature range (typical -40 to 85°C; variants may differ)
- Package options: 28-pin DIP or SOIC (lead-free variants available)
- Applications: data logging, firmware/config storage, embedded systems needing persistent RAM after power loss
Note: exact memory size, temperature, and packaging can vary by exact variant; refer to the datasheet for the specific DS1245Y-70+ revision.

Package

DS1245Y-70+ is available in a 28-pin DIP (DIP-28) through-hole package.

Pinout

- Pin count: 28 pins (28-pin package: DIP/SOIC).
- Function: Dallas/Maxim DS1245Y-70+ is an NVSRAM with an integrated real-time clock and battery backup (non-volatile static RAM with timekeeping). It preserves data and time across powerdown.

Manufacturer

- Manufacturer: Dallas Semiconductor (DS).
- What kind of company: An American semiconductor company that designed and built memory and mixed-signal ICs (e.g., NVSRAM, RTCs). It was later acquired by Maxim Integrated, and is now under Analog Devices.

Application

DS1245Y-70+ is a nonvolatile SRAM with an integrated real-time clock for power-loss-tolerant memory.
Applications:
- Embedded systems needing persistent RAM with time stamping
- Firmware/BIOS/config memory in controllers, routers, switches, industrial equipment
- Data logging and event recording in automation, automotive, telecom
- Calibration data and critical parameters storage in medical devices and meters
- Any system requiring quick recovery after power loss with retained configuration data