RS5C372A

Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO8, SSOP-8
6,614 有效庫存

RS5C372A

有效庫存6,614

Real Time Clock, Volatile, 0 Timer(s), CMOS, PDSO8, SSOP-8

  • 製造商零件號 # : RS5C372A

  • 包裝/封裝: TSSOP-8

  • 製造商: RICOH

  • 產品分類 : Memory

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RS5C372A 數據表
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詳細說明

OUTLINEThe RS5C372A is a CMOS type real-time clock which is connected to the CPU via 2-wires and capable of serial transmission of clock and calendar data to the CPU.FEATURES• Time keeping voltage: 1.45V to 6.0V• Lowest supply current: 0.5µA TYP. (0.9µA MAX.) : 3V (25˚C) (1.0µA MAX.) : 3V (–40 to +85˚C)• Connected to the CPU via only 2-wires (I2C bus Interface, MAX.400kHz, address 7bit)• A clock counter (counting hours, minutes, and seconds) and a calendar counter (counting leap years, years, months, days, and days of the week) in BCD codes• Interrupt to the CPU (period of one month to one second, interrupt flag, interrupt halt function) (INTRA, INTRB)• Two systems of alarm functions (days of the week, hours, and minutes) (INTRA, INTRB)• Oscillation halt sensing to judge internal data validity• Clock output of 32.768kHz (32.000kHz) (output controllable via a register) ... (Nch. open drain output)• Second digit adjustment by ±30 seconds• Automatic leap year recognition up to the year 2099• 12-hour or 24-hour time display selectable• Oscillation stabilizing capacity (CG, CD) incorporated• High precision time trimming circuit• Oscillator of 32.768kHz or 32.000kHz may be used• CMOS logic• Package: 8pin SSOPAPPLICATIONS• Communication devices (multi function phone, portable phone, PHS or pager)• OA devices (fax, portable fax)• Computer (desk-top and mobile PC, portable word-processor, PDA, electric note or video game)• AV components (portable audio unit, video camera,camera, digital camera or remote controller)• Home appliances (rice cooker, electric oven)• Other (car navigation system, multi-function watch)

主要特徵

  • Time keeping voltage: 1.45V to 6.0V
  • Lowest supply current: 0.5µA TYP. (0.9µA MAX.) : 3V (25˚C)
  • (1.0µA MAX.) : 3V (–40 to +85˚C)
  • Connected to the CPU via only 2-wires
  • (I2C bus Interface, MAX.400kHz, address 7bit)
  • A clock counter (counting hours, minutes, and seconds)
  • and a calendar counter
  • (counting leap years, years,
  • months, days, and days of the week) in BCD codes
  • Interrupt to the CPU (period of one month to one second,
  • interrupt flag, interrupt halt function) (INTRA, INTRB)
  • Two systems of alarm functions
  • (days of the week, hours, and minutes) (INTRA, INTRB)
  • Oscillation halt sensing to judge internal data validity
  • Clock output of 32.768kHz (32.000kHz)
  • (output controllable via a register) ... (Nch. open drain output)
  • Second digit adjustment by ±30 seconds
  • Automatic leap year recognition up to the year 2099
  • 12-hour or 24-hour time display selectable
  • Oscillation stabilizing capacity (CG, CD) incorporated
  • High precision time trimming circuit
  • Oscillator of 32.768kHz or 32.000kHz may be used
  • CMOS logic
  • Package: 8pin SSOP

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。

Pbfree Code No Rohs Code No
Part Life Cycle Code Transferred Part Package Code SOIC
Pin Count ! 8 Reach Compliance Code
ECCN Code EAR99 HTS Code ! 8542.39.00.01
Additional Feature ! SECOND DIGIT ADJUSTMENT BY +/-30 SECONDS Clock Frequency-Max 0.032 MHz
Information Access Method I2C Interrupt Capability ! Y
JESD-30 Code R-PDSO-G8 JESD-609 Code e0
Length 4.4 mm Moisture Sensitivity Level 1
Number of Terminals 8 Number of Timers
Operating Temperature-Max 85 °C Operating Temperature-Min -40 °C
Package Body Material PLASTIC/EPOXY Package Code LSSOP
Package Equivalence Code SSOP8,.25 Package Shape RECTANGULAR
Package Style SMALL OUTLINE, LOW PROFILE, SHRINK PITCH Power Supplies ! 2/6 V
Qualification Status ! Not Qualified Seated Height-Max 1.45 mm
Supply Voltage-Max 6 V Supply Voltage-Min 1.7 V
Supply Voltage-Nom 3 V Surface Mount ! YES
Technology CMOS Temperature Grade ! INDUSTRIAL
Terminal Finish TIN LEAD Terminal Form ! GULL WING
Terminal Pitch ! 0.65 mm Terminal Position DUAL
Time-Min SECONDS Volatile YES
Width 3.5 mm uPs/uCs/Peripheral ICs Type TIMER, REAL TIME CLOCK

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 RS5C372A PDF 下載

常見問題解答

What is RS5C372A?

The RS5C372A is a real-time clock (RTC) module with an integrated crystal oscillator designed by EPSON. It is a compact and accurate timing solution for various electronic devices, including digital cameras, portable media players, and industrial control systems.

How Does RS5C372A Work?

The RS5C372A works by providing precise timing and calendar functions to electronic systems. It uses an integrated crystal oscillator to generate accurate clock signals and features a battery backup function to maintain timekeeping during power disruptions. The module communicates with the host system using an I2C interface, allowing easy integration and configuration.

How Many Pins does RS5C372A have and What are the Functions of the Pinout Configuration?

The RS5C372A is housed in a compact 8-pin SOP (Small Outline Package) package. The pinout configuration includes:

  • VDD: Positive power supply pin.
  • VSS: Ground pin.
  • SCL: Serial clock input for I2C communication.
  • SDA: Serial data input/output for I2C communication.
  • 32KHZ: 32kHz output for external use.
  • VBAT: Battery backup input for maintaining clock operation during power loss.

What are the Pros and Cons of RS5C372A?

Pros:

  • Compact Size: The small SOP package makes it suitable for space-constrained designs.
  • Integrated Oscillator: Eliminates the need for an external crystal, reducing component count and board space.
  • Battery Backup: Ensures continuous timekeeping during power interruptions for enhanced reliability.
  • I2C Interface: Offers simple and versatile communication with the host system.

Cons:

  • Single Voltage Supply: May not be suitable for systems with multiple voltage domains.
  • Temperature Sensitivity: Like all crystal oscillators, the accuracy of the timing may be affected by temperature variations.

Are There Any Equivalents/Alternatives to RS5C372A for Recommendation?

  • The DS3231 from Maxim Integrated is a similar RTC module with high accuracy and temperature compensation.
  • Alternatives to the RS5C372A include the PCF8563 from NXP Semiconductors and the MCP7940N from Microchip Technology.