RV5C348B-E2, RV5C348B-E2-F, RV5C386A Selling Leads, Datasheet
MFG:RICOH Package Cooled:MSOP-10 D/C:0001+
RV5C348B-E2, RV5C348B-E2-F, RV5C386A Datasheet download
Part Number: RV5C348B-E2
MFG: RICOH
Package Cooled: MSOP-10
D/C: 0001+
RV5C348B-E2, RV5C348B-E2-F, RV5C386A
- Table of contents:
Info of RV5C348B-E2
Info of RV5C348B-E2-F
Info of RV5C386A
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About RV55C-26R1DI
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Datasheet: RV55C-26R1DI
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About RV55C-26R1DI
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Datasheet: RV55C-26R1DI
File Size: 148678 KB
Manufacturer:
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About RV5C386A
PDF/DataSheet Download
Datasheet: RV5C386A
File Size: 371051 KB
Manufacturer: RICOH [RICOH electronics devices division]
Download : Click here to Download
RV5C386A General Description
The RV5C386A is a CMOS real-time clock IC connected to the CPU by two signal lines, SCL and SDA, and configured to perform serial transmission of time and calendar data to the CPU. The periodic interrupt circuit is configured to generate interrupt signals with six selectable interrupts ranging from 0.5 seconds to 1 month. The 2 alarm interrupt circuits generate interrupt signals at preset times. As the oscillation circuit is driven under constant voltage, fluctuation of the oscillator frequency due to supply voltage is small, and the time keeping current is small (TYP. 0.35 mA at 3 volts). The oscillation halt sensing circuit can be used to judge the validity of internal data in such events as power-on; The supply voltage monitoring circuit is configured to record a drop in supply voltage below two selectable supply voltage monitoring threshold settings. The 32- kHz clock output function (CMOS output) is intended to output sub-clock pulses for the external microcomputer. The 32-kHz clock output can be disabled by certain input pin. The oscillation adjustment circuit is intended to adjust time counts with high precision by correcting deviations in the oscillation frequency of the crystal oscillator. This model comes in an ultra-compact SSOP10G (Pin Pitch 0.5mm, Height1.2mm, 4.0mm¥2.9mm).
RV5C386A Maximum Ratings
| Symbol | Item | Pin Name | Description | Unit |
| VDD | Supply Voltage | -0.3 to +6.5 | V | |
| VI | Input Voltage | SCL, SDA, CLKC | -0.3 to +6.5 | V |
| VO | Output Voltage 1 | SDA, /INTRA, /INTRB | -0.3 to +6.5 | V |
| Output Voltage 1 | 32KOUT | -0.3 to VDD+0.3 | V | |
| PD | Power Dissipation | Topt = 25°C | 300 | mW |
| Topt | Operating Temperature | -40 to +85 | °C | |
| Tstg | Storage Temperature | -55 to +125 | °C |
RV5C386A Features
· Timekeeping supply voltage ranging from 1.45 to 5.5V
· Low power consumption 0.35mA TYP (0.8mA MAX) at VDD=3V
· Only two signal lines (SCL and SDA) required for connection to the CPU.
( I2C-Bus Interface, 400kHz at VDD³2.5V, address 7bits)
· 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
· 2 alarm interrupt circuits (Alarm_W for week, hour, and minute alarm settings and Alarm_D for hour and
minute alarm settings)
· 32-kHz clock circuit (CMOS output, equipped with a control pin)
· 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 SSOP10G
· Low power consumption 0.35mA TYP (0.8mA MAX) at VDD=3V
· Only two signal lines (SCL and SDA) required for connection to the CPU.
( I2C-Bus Interface, 400kHz at VDD³2.5V, address 7bits)
· 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
· 2 alarm interrupt circuits (Alarm_W for week, hour, and minute alarm settings and Alarm_D for hour and
minute alarm settings)
· 32-kHz clock circuit (CMOS output, equipped with a control pin)
· 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 SSOP10G
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