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带有闹钟的串行实时时钟

产品详情

主要特征

Parametric specs for Timekeeping & Real-Time Clocks
Interface 3-Wire
SPI
VSUPPLY (V) 2
3
5
Date/ Time Format (hh = sec/100) YY-MM-DD/ HH:MM:SS
Time Keeping Current (nA) (typ) 450
CL (pF) 6
Memory Type NV SRAM
Memory Size (Bytes) 96
Time of Day Alarms 2
Package/Pins PDIP/16
TSSOP/20
Budgetary
Price (See Notes)
2.37
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简化框图

技术文档

数据资料 带有闹钟的串行实时时钟 Apr 27, 2015

支持和培训

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参量

Parametric specs for Timekeeping & Real-Time Clocks
Interface 3-Wire
SPI
VSUPPLY (V) 2
3
5
Date/ Time Format (hh = sec/100) YY-MM-DD/ HH:MM:SS
Time Keeping Current (nA) (typ) 450
CL (pF) 6
Memory Type NV SRAM
Memory Size (Bytes) 96
Time of Day Alarms 2
Package/Pins PDIP/16
TSSOP/20
Budgetary
Price (See Notes)
2.37

主要特征

  • Completely Manages All Timekeeping Functions
    • Real-Time Clock (RTC) Counts Seconds, Minutes, Hours, Date of the Month, Month, Day of the Week, and Year with Leap-Year Compensation Valid Up to 2100
    • 96-Byte, Battery-Backed NV RAM for Data Storage
    • Two Time-Of-Day Alarms, Programmable on Combination of Seconds, Minutes, Hours, and Day of the Week
    • 1Hz and 32.768kHz Clock Outputs
  • Standard Serial Port Interfaces with Most Microcontrollers
    • Supports Motorola SPI (Serial Peripheral Interface) Modes 1 and 3 or Standard 3-Wire Interface
    • Burst Mode for Reading/Writing Successive Addresses in Clock/RAM
  • Multiple Power Supply Pins Ease Adding Battery For Backup
    • Dual-Power Supply Pins for Primary and Backup Power Supplies
    • Optional Trickle Charge Output to Backup Supply
    • 2.0V to 5.5V Operation
  • Optional Industrial Temperature Range: -40°C to +85°C Supports Operation in a Wide Range of Applications
  • 20-Pin TSSOP Minimizes Required Space
  • Underwriters Laboratory (UL®) Recognized

应用/用途

描述

The DS1306 serial alarm real-time clock (RTC) provides a full binary coded decimal (BCD) clock calendar that is accessed by a simple serial interface. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. In addition, 96 bytes of NV RAM are provided for data storage.

An interface logic-power supply input pin (VCCIF) allows the DS1306 to drive SDO and 32kHz pins to a level that is compatible with the interface logic. This allows an easy interface to 3V logic in mixed supply systems. The DS1306 offers dual-power supplies as well as a battery-input pin. The dual-power supplies support a programmable trickle charge circuit that allows a rechargeable energy source (such as a super cap or rechargeable battery) to be used for a backup supply. The VBAT pin allows the device to be backed up by a non-rechargeable battery. The DS1306 is fully operational from 2.0V to 5.5V.

Two programmable time-of-day alarms are provided by the DS1306. Each alarm can generate an interrupt on a programmable combination of seconds, minutes, hours, and day. "Don't care" states can be inserted into one or more fields if it is desired for them to be ignored for the alarm condition. A 1Hz and a 32kHz clock output are also available.

The DS1306 supports a direct interface to SPI™ serial data ports or standard 3-wire interface. An easy-to use address and data format is implemented in which data transfers can occur 1-byte at a time or in multiple-byte Burst Mode®.

简化框图

DS1306:典型工作电路 DS1306:典型工作电路 Zoom icon

技术文档

数据资料 带有闹钟的串行实时时钟 Apr 27, 2015

支持和培训

在Maxim的知识库中搜索技术问题的答案

过滤搜索

Maxim的专业工程师团队也会为您解答相应的技术问题,请访问Maxim的 支持中心