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Description
The PCF1122A-BD is a single chip, 4.19 MHz CMOS car clock circuit designed to drive a 4-digit duplex liquid crystal display (LCD). It provides hours, minutes, and seconds functions and can be operated in either a 12-hour or 24-hour mode. The circuit is battery-operated and features an internal voltage regulator that is programmable for various LCD voltages. Time calibration and voltage regulation can be adjusted electronically through an on-chip EEPROM. The LCD voltage adjusts with temperature to ensure good contrast. The PCF1122A-BD is available in a 28-lead plastic SMD (SO28) package.
Specifications and Features
- Single chip, 4.19 MHz CMOS car clock circuit
- Designed to drive a 4-digit duplex LCD display
- Provides hours, minutes, and seconds functions
- Internal voltage regulator programmable for various LCD voltages
- Time calibration and voltage regulation programmable via on-chip EEPROM
- LCD voltage adjusts with temperature for good contrast
- 12-hour or 24-hour mode operation
- Operating ambient temperature: -40 to +85 °C
- 28-lead plastic SMD (SO28) package
- 4 Hz set mode
Application Scenarios
The PCF1122A-BD is commonly used in automotive applications where a clock display is required. It can be integrated into car dashboards, control panels, or other electronic systems that require timekeeping functionality. The ability to adjust the LCD voltage with temperature ensures optimal display performance in various environmental conditions.
Comparison
Advantages- Single chip design for easy integration
- Programmable voltage regulator for flexibility
- EEPROM programmability for convenient time calibration
- LCD voltage adjustment for optimal contrast
- Wide operating temperature range
- Compact and durable plastic SMD package
Disadvantages- Limited to driving a 4-digit duplex LCD display
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Datasheet
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Shopping guide
Delivery period:
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Popular parts of the same kind
- Datasheet: Download PCF1122A-BD
- Chipdatas Part: CD86-PCF1122A-BD
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 18:59 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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The fee is charged according to the rule of PayPal.
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