Overview
The PCF1179CT,112 is a single-chip CMOS car clock circuit produced by NXP Semiconductors. This integrated circuit is designed to provide hours, minutes, and seconds functions and is specifically tailored for driving a 4-digit duplex LCD display. It is part of the PCF1179 series, known for its robust and efficient time-keeping capabilities in automotive and other applications.
Key Specifications
| Parameter | Conditions | Min. | Max. | Unit | |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | VSS = 0 V; Tamb = −40 to +85 °C | 3 | - | 6 | V |
| Oscillator Frequency | f = 4.194304 MHz | - | - | - | MHz |
| Number of Pins | - | - | - | 28 | - |
| Operating Temperature | - | -40 | - | 85 | °C |
| Maximum Frequency Tolerance | - | - | - | ±30 × 10−6 | - |
Key Features
- Single-chip CMOS car clock circuit with hours, minutes, and seconds functions.
- Designed to drive a 4-digit duplex LCD display.
- 12/24-hour mode select input.
- EEPROM for storing time calibration data.
- Test speed-up mode input for faster testing.
- Colon option input for display customization.
- Low power consumption with a typical supply current of less than 3 mA.
Applications
The PCF1179CT,112 is primarily used in automotive applications for car clocks and other time-keeping devices. It can also be used in various consumer electronics and industrial devices that require accurate and reliable time-keeping functions.
Q & A
- What is the primary function of the PCF1179CT,112?
The primary function is to provide hours, minutes, and seconds time-keeping for a 4-digit duplex LCD display. - Who is the manufacturer of the PCF1179CT,112?
The manufacturer is NXP Semiconductors. - What is the operating voltage range of the PCF1179CT,112?
The operating voltage range is from 3 V to 6 V. - How many pins does the PCF1179CT,112 have?
The IC has 28 pins. - What is the oscillator frequency of the PCF1179CT,112?
The oscillator frequency is 4.194304 MHz. - Does the PCF1179CT,112 support both 12 and 24-hour modes?
Yes, it supports both 12 and 24-hour modes. - How is time calibration achieved in the PCF1179CT,112?
Time calibration is achieved through the use of EEPROM and specific pulse sequences applied to the DATA input. - What is the typical supply current of the PCF1179CT,112?
The typical supply current is less than 3 mA. - What is the operating temperature range of the PCF1179CT,112?
The operating temperature range is from -40 °C to +85 °C. - Can the PCF1179CT,112 be used in non-automotive applications?
Yes, it can be used in various consumer electronics and industrial devices requiring accurate time-keeping.
