PT7C4307WE

Real Time Clock Overview

The PT7C4307WE is a Real-time Clock (RTC) module manufactured by Diodes Incorporated, utilizing an I2C bus interface for communication. It operates with a primary supply voltage of 4.5V to 5.5V and supports battery backup at 2.0V to 3.5V. The device features a 32.768kHz crystal oscillator, time counters supporting both 12-hour and 24-hour formats, and 56x8 bits of static RAM. It includes a programmable square wave output driver and functions within an operating temperature range of -40°C to +85°C. The component is housed in an 8-pin SOIC package.

Real Time Clock Feature Summary

• I2C Bus Interface: Supports standard mode up to 400 kHz clock frequency.
• Time and Calendar Counters: Tracks seconds, minutes, hours, days of the week, dates, months, and years in BCD format.
• Battery Backup: Maintains timekeeping with VBAT between 2.0V and 3.5V when primary power is lost.
• Programmable Square Wave Output: SQW/OUT pin provides selectable frequencies of 1Hz, 4.096kHz, 8.192kHz, or 32.768kHz.

Real Time Clock Applications

• Embedded systems requiring precise timekeeping and calendar tracking.
• Data logging devices needing timestamp capabilities.
• Consumer electronics with real-time clock functionality.
• Industrial controllers operating in extended temperature environments.

Real Time Clock Procurement Notes

Verify the specific package variant required, as the base part number covers both SOIC-8 (W) and TDFN-8 (ZE) packages. Confirm RoHS compliance status through official manufacturer documentation, noting that the 'E' suffix indicates lead-free and green product status. Check current production lifecycle status directly with Diodes Incorporated, as availability may vary by region and distributor.

Real Time Clock Selection Notes

Select the PT7C4307WE when a dedicated RTC with I2C interface is needed for 5V logic systems. Ensure the design accommodates the 4.5V to 5.5V VCC range and provides a 3V battery source for VBAT. Consider the 56-byte RAM capacity for data storage needs. Verify that the application does not require alarm interrupts, as this feature is not supported by this specific model.

Real Time Clock Part Context

The PT7C4307 is part of Diodes Incorporated's portfolio of real-time clock modules. It succeeds earlier Pericom Semiconductor designs acquired by Diodes. The 'WE' suffix denotes the 8-pin SOIC package with tape and reel packaging. It serves as a standalone timing solution for microcontrollers lacking integrated RTC peripherals.

Real Time Clock Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Engineers should consult Diodes Incorporated for direct replacements or cross-reference based on specific pinout and electrical parameter compatibility requirements.