SAA1064T/N2,112

Display Drivers Overview

The SAA1064T/N2,112 is a bipolar integrated circuit designed as a 4-digit LED driver with an I²C-Bus interface. Manufactured using an I²L compatible 18-volt process, it drives four 7-segment LED displays with decimal points via multiplexing between two digit pairs. The device features an I²C slave transceiver interface supporting four programmable addresses, a power reset flag, and sixteen software-controllable current sink outputs up to 21 mA. It includes two multiplex drive outputs for common anode segments, an on-chip multiplex oscillator, and control bits for static, dynamic, blank modes, and segment testing.

Display Drivers Feature Summary

• I²C Bus Interface: Features a slave transceiver interface allowing communication with four different programmable slave addresses.
• LED Display Driving: Capable of driving four 7-segment LED displays with decimal points through multiplexing between two digit pairs.
• Output Control: Provides sixteen current sink outputs controllable by software up to 21 mA and two multiplex drive outputs for common anode segments.
• Operational Modes: Includes control bits to select static, dynamic, and blank modes, along with a dedicated bit for segment testing.

Display Drivers Applications

• Driving 4-digit 7-segment LED displays in consumer electronics
• Industrial control panel indicators requiring I²C connectivity
• Home appliance user interfaces with numeric readouts

Display Drivers Procurement Notes

Verify the specific suffix N2,112 against official NXP documentation to confirm tape-and-reel packaging specifications and environmental compliance status. Ensure the I²C address configuration matches system requirements, as the device supports four programmable slave addresses. Confirm voltage levels align with the 18-volt I²L process capabilities for reliable operation in the target application environment.

Display Drivers Selection Notes

Select this component when a simple I²C-controlled solution is needed for driving multiple 7-segment LED digits without complex microcontroller overhead. The built-in multiplex oscillator reduces external component count. Consider the 21 mA output capability for standard LED brightness requirements. Verify compatibility with the host controller's I²C bus speed and addressing scheme before integration.

Display Drivers Part Context

The SAA1064T belongs to NXP's legacy LED driver portfolio, specifically designed for applications requiring direct I²C control of numeric displays. It utilizes an I²L (Integrated Injection Logic) compatible process, offering robustness in industrial environments. This part serves as a bridge between low-pin-count digital controllers and high-current display elements, simplifying board layout for multi-digit indicator systems.

Display Drivers Replacement Considerations

Check NXP datasheets for pin-compatible alternatives such as the SAA1064TD-T. Verify functional equivalence regarding current sink capacity and I²C protocol support. Ensure any substitute maintains the same multiplexing frequency range and voltage tolerance for seamless integration into existing designs.

Display Drivers FAQ

How many slave addresses can be programmed?

The SAA1064T supports programming for four different slave addresses via its I²C interface.

What is the maximum current per output?

The sixteen current sink outputs are controllable by software up to 21 mA.