BQ4285EP TI Real-Time Clock | 24-PDIP | 5V, 128 Bytes NV SRAM

Product Overview

The BQ4285EP from Texas Instruments is a CMOS real-time clock (RTC) with 128 bytes of nonvolatile static RAM, designed for low-power applications. It integrates a quartz crystal, a clock/calendar circuit, and a power-fail control circuit in a 24-pin PDIP package. The device provides seconds, minutes, hours, day, date, month, and year information, with automatic leap-year compensation. It operates from a single 5V supply and features a trickle-charge capability for backup batteries.

Detailed Technical Specifications

Key Features

• Integrated 32.768 kHz quartz crystal
• 128 bytes of nonvolatile static RAM
• Automatic power-fail detect and switch circuitry
• Programmable trickle charger for backup battery
• BCD representation of time and calendar
• Low power consumption: 1.5 µA typical in timekeeping mode
• Direct interface with most microcontrollers via multiplexed bus

Target Applications

• 5G base station equipment requiring precise timekeeping
• Industrial automation controllers (e.g., PLCs)
• Automotive dashboard clocks and event loggers
• Medical devices (e.g., patient monitoring systems)
• Smart meters and utility monitoring systems

Global Supply Chain & Wholesale Solutions

At Jasin Chip, we provide professional supply chain and wholesale solutions for BQ4285EP. Our core advantages include:

• 24/7 Global Customer Support: Professional team providing instant quotes and technical support worldwide.
• In-stock Inventory, Same-day Shipping: We maintain localized stock; orders confirmed before 4 PM are shipped the same day.
• HK-SZ Synergy, Flexible Settlement: Direct global shipping from Shenzhen with support for HK bank transfers and multi-currency.
• Escrow Secured Transactions: We support Escrow.com for secure transactions, ensuring peace of mind for batch orders.
• BOM Kitting & Sampling Services: Specialized sourcing for testing samples and urgent shortage components.

Quality Assurance & Compliance

Jasin Chip guarantees that all delivered products are 100% original factory stock with full quality assurance and traceability.

• 100% Original & Authentic: All components are guaranteed to be authentic with strict quality control.
• RoHS Compliant: All electronic components comply with international environmental and safety standards.
• Original Factory Packaging: We maintain original factory packaging and seals to ensure ESD protection and physical integrity.

產品概述

BQ4285EP 是德州儀器 (TI) 生產的 CMOS 實時時鐘 (RTC) 芯片，內置 128 字節非易失靜態 RAM，專為低功耗應用設計。該器件集成石英晶體、時鐘/日曆電路和電源失效控制電路，採用 24 引腳 PDIP 封裝。它提供秒、分、時、星期、日期、月和年信息，並具有自動閏年補償功能。工作電壓為單一 5V 電源，並支持備用電池的涓流充電。

詳細技術參數

核心特性

• 集成 32.768 kHz 石英晶體
• 128 字節非易失靜態 RAM
• 自動電源失效檢測和切換電路
• 可編程備用電池涓流充電器
• 時間和日曆的 BCD 表示
• 低功耗：計時模式下典型值 1.5 µA
• 通過復用總線直接與大多數微控制器接口

典型應用場景

• 需要精確計時的 5G 基站設備
• 工業自動化控制器（如 PLC）
• 汽車儀表板時鐘和事件記錄器
• 醫療設備（如病人監護系統）
• 智能電表和公用事業監控系統

環球供應鏈與批發合作夥伴方案

在 Jasin Chip，我們為 BQ4285EP 提供全面的供應鏈與批發解決方案。 我們的核心優勢包括：

• 全天候環球客戶支援：專業團隊為您提供即時報價及技術支援，無需漫長等待。
• 現貨庫存，即日發貨：確保現貨充足。下午 4 點前確認訂單，即可安排當天寄出。
• 深港聯動，結算靈活：深圳直發全球，物流高效可靠；支援香港銀行戶口轉賬及多幣種結算。
• Escrow 擔保交易：支援 Escrow.com 平台交易，保障買賣雙方權益，小批量訂單亦可安心在線下單。
• BOM 配單與樣板服務：提供樣板測試及認證支援。專注一站式 BOM 配套及緊急缺料採購服務。

品質保證與合規

Jasin Chip 承諾所有出貨產品均為原廠正貨，具備完善的品質保證及產品可追溯性。

• 100% 原廠正貨：承諾所有供應零件均為原裝現貨，品質嚴格把關，來源清晰可追溯。
• 符合 RoHS 認證：所有電子元器件均符合國際環保標準及相關安全認證。
• 原廠封裝保護：嚴格保留原廠原始包裝及封條，確保物流過程中的靜電防護 (ESD) 與物理安全。

以上產品均為原廠正貨，提供 BOM 配單及現貨庫存支援，歡迎查詢。

HONG KONG JASIN SEMICONDUCTOR TECHNOLOGY COMPANY LIMITED
Trusted Partner for Automotive, Industrial, and Hard-to-find Components.
WhatsApp: +852 5209 9691 | Email: [email protected]