DS1643-100+

Maxim DS1643-100 NVRAM
7,302 有效庫存

DS1643-100+

有效庫存7,302

Maxim DS1643-100 NVRAM

  • 製造商零件號 # : DS1643-100+

  • 包裝/封裝: EDIP-28

  • 零件狀態 : OBSOLETE

  • 製造商: Analog Devices

  • 產品分類 : Real Time Clocks

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DS1643-100+ 數據表
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詳細說明

In summary, DS1643-100+ is a cutting-edge RTC chip that offers superior performance and functionality for timekeeping and data storage applications. Its robust design, reliable operation, and versatile features make it an essential component for electronic devices that require accurate timekeeping and timestamp functionality. Whether used in consumer electronics, industrial systems, or automotive applications, this chip delivers consistent performance and dependable results. For designers and engineers seeking a high-quality RTC solution, DS1643-100+ is a top choice

主要特徵

  • Integrated NV SRAM, real time clock, crystal, power-fail control circuit and lithium energy source
  • Clock registers are accessed identically to the static RAM. These registers are resident in the eight top RAM locations.
  • Totally nonvolatile with over 10 years of operation in the absence of power
  • Access times of 70 ns and 100 ns
  • BCD coded year, month, date, day, hours, minutes, and seconds with leap year compensation valid up to 2100
  • Power-fail write protection allows for ±10% VCC power supply tolerance
  • Lithium energy source is electrically disconnected to retain freshness until power is applied for the first time
  • DS1643 only (DIP Module)
  • – Standard JEDEC byte-wide 8K x 8 RAM pinout DS1643P only (PowerCap Module Board)
  • – Surface mountable package for direct connection to PowerCap containing battery and crystal
  • – Replaceable battery (PowerCap)
  • – Power-fail output
  • – Pin-for-pin compatible with other densities of DS164XP Timekeeping RAM

規格

以下是所選零件的基本參數，涉及零件的特性及其所屬類別。

Product Category ! Real Time Clock RoHS Details
Mounting Style Through Hole Package / Case EDIP-28
RTC Bus Interface Parallel Time Format ! HH:MM:SS
RTC Memory Size 8 kB Supply Voltage - Max 5.5 V
Supply Voltage - Min 4.5 V Minimum Operating Temperature 0 C
Maximum Operating Temperature ! + 70 C Brand Analog Devices / Maxim Integrated
Function Calendar, Clock, NV Timekeeping RAM Product Type ! Real Time Clocks
Series DS1643 Factory Pack Quantity 12
Subcategory Clock & Timer ICs Part # Aliases DS1643 90-16430+100

數據表 PDF

數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。

初步規格 DS1643-100+ PDF 下載

常見問題解答

What is DS1643-100+?

The DS1643-100+ is a non-volatile static RAM (NVSRAM) module manufactured by Maxim Integrated. It combines the features of a static RAM with non-volatile storage, providing data retention even when power is removed. This makes it suitable for applications requiring data backup and storage in the event of power loss.

How Does DS1643-100+ Work?

The DS1643-100+ works by utilizing a combination of volatile static RAM and non-volatile EEPROM (Electrically Erasable Programmable Read-Only Memory). It allows data to be read and written like a standard SRAM, while maintaining the ability to store data without a constant power source. When the module is powered, it operates as a regular fast SRAM, and when power is removed, the integral lithium energy source retains the data.

How Many Pins does DS1643-100+ have and What are the Functions of the Pinout Configuration?

The DS1643-100+ is housed in a 28-pin EDIP (Extended Dual-In-Line Package) module. The pinout configuration includes:

  • VCC: Positive power supply pin.
  • GND: Ground pin.
  • CE, OE, WE: Chip enable, output enable, and write enable control pins.
  • ADDR (A0-A16), DATA (DQ0-DQ14): Address and data input/output pins.
  • VBAT: Backup battery input pin.
  • NC: No-connect pin.

What are the Pros and Cons of DS1643-100+?

Pros:

  • Non-Volatile Data Storage: Retains data without power, providing data backup functionality.
  • Fast Access Time: Operates as a fast SRAM with rapid data access and storage.
  • Simple Integration: Compatible with standard SRAM interfaces, making it easy to integrate into existing designs.
  • Reliable Data Retention: Ensures long-term data storage and backup in critical applications.

Cons:

  • Complex Control: Requires careful consideration of control signals for proper operation and data retention.
  • Cost: NVSRAM modules may have a higher cost compared to standard SRAM due to non-volatile memory components.

Are There Any Equivalents/Alternatives to DS1643-100+ for Recommendation?

Alternatives to the DS1643-100+ include the FM18W08 from Fujitsu and the CY14B101P from Cypress Semiconductor, which are also non-volatile SRAM modules with similar functionality.

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