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RV5C339A

Features: • Timekeeping supply voltage ranging from 1.45 to 5.5 volts • Low supply current: TYP. 0.35µA (MAX. 0.8µA) at 3 volts (at 25˚C)• Only three signal lines (SCLK, SIO, and CE) required for connection to the CPU. Maximum clock frequency of 2 MHz (with VDD ...

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SeekIC No. : 004480249 Detail

RV5C339A: Features: • Timekeeping supply voltage ranging from 1.45 to 5.5 volts • Low supply current: TYP. 0.35µA (MAX. 0.8µA) at 3 volts (at 25˚C)• Only three signal lines ...

RV5C339A Data Sheet

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Part Number:
RV5C339A
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Timekeeping supply voltage ranging from 1.45 to 5.5 volts
• Low supply current:  TYP. 0.35µA (MAX. 0.8µA) at 3 volts (at 25˚C)
• Only three signal lines (SCLK, SIO, and CE) required for connection to the CPU. 
   Maximum clock frequency of 2 MHz (with VDD of 5 volts)
• Time counters (counting hours, minutes, and seconds) and calendar counters (counting years, months, days, and
   weeks) (in BCD format)
• 1900/2000 identification bit for Year 2000 compliance 
• Interrupt circuit configured to generate interrupt signals (with interrupts ranging from 0.5 seconds to 1 month) to
   the CPU and provided with an interrupt flag and an interrupt halt circuit
• 2 alarm circuits (Alarm_W for week , hour , and minute alarm  settings and Alarm_D for hour and minute alarm
   settings)    
• 32-kHz clock circuit (Nch. open drain output)
   Designed to disable 32-kHz clock output in response to a command from the host computer.
• Oscillation halt sensing circuit which can be used to judge the validity of internal data
• Supply voltage monitoring circuit with two supply voltage monitoring threshold settings 
• Automatic identification of leap years up to the year 2099
• Selectable 12-hour and 24-hour mode settings
• Built-in oscillation stabilization capacitors (CG and CD)
• High precision oscillation adjustment circuit
• CMOS process
• Ultra-compact 10-pin SSOP-G (with a height of 1.20mm and size of 4.0×2.9mm)


Application

• 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)


Pinout

Connection Diagram


Specifications

Symbol Item Conditions Ratings Unit
VDD Supply Voltage   0.3 to +6.5 V
VI Input Voltage 1 SIO 0.3 to VDD+0.3 V
Input Voltage 2 SCLK, CE 0.3 to +6.5
VO Output Voltage 1 SIO 0.3 to VDD+0.3 V
Output Voltage 2 32KOUT, INTRA , INTRB 0.3 to +6.5
PD Power Dissipation Topt=25˚C 300 mW
Topt Operating Temperature   40 to +85 ˚C
Tstg Storage Temperature   55 to +125 ˚C



Description

Pin No. Symbol Name Description
7 CE Chip Enable Input The CE pin is used for interfacing with the CPU. Should be held high to allow
access to the CPU. Incorporates a pull-down resistor. Should be held low or open
when the CPU is powered off. Allows a maximum input voltage of 5.5 volts regard-
less of supply voltage.
2 SCLK Serial Clock Input The SCLK pin is used to input clock pulses synchronizing the input and output of
data to and from the SIO pin. Allows a maximum input voltage of 5.5 volts regard-
less of supply voltage.
3 SIO Serial Input/Output The SIO pin is used to input and output data intended for writing and reading in
synchronization with the SCLK pin. CMOS input/output.
6 IATRA Interrupt Output A The IATRA  pin is used to output periodic interrupt signals to the CPU and alarm
interrupt signals (Alarm_D). Disabled at power-on from 0 volts.
Nch. open drain output.
4 IATRB Interrupt Output B The IATRB pin is used to output alarm interrupt signals (Alarm_W). Disable at
power-on from 0 volts. Nch. open drain output.
1 32KOUT 32-kHz Clock Output The 32KOUT pin is used to output 32.768-kHz clock pulses. Enabled at power-on
from 0 volts. Nch. open drain output. The RV5C339A is designed to be disabled
32-kHz clock output in response to a command from the host computer.
9
8		 OSCIN
OSCOUT		 Oscillation Circuit
Input/Output		 The OSCIN and OSCOUT pins are used to connect the 32.768-kHz crystal oscilla-
tor (with all other oscillation circuit components built into the RV5C339A.)
10
5		 VDD
VSS		 Positive Power Supply Input
Negative Power Supply Input		 The VDD pin is connected to the power supply. The VSS pin is grounded.



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