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28-pin LCD microcontrollers

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article image 8-bit PIC microcontrollers.

MICROCHIP Technology has released eight new 8-bit PIC microcontrollers with integrated liquid crystal display (LCD) modules.

They include 28-pin LCD microcontrollers for simple display applications requiring embedded control and 80-pin microcontrollers capable of driving 192 segments for touch screen and segmented LCD displays.

The LCD PIC microcontrollers have Flash program memory, low power consumption and LCD control. The Flash program memory enables maximum flexibility in code development and field reprogrammability. The microcontrollers also have nanoWatt Technology, which meets industry low-power design requirements, including the need to drive LCD displays in sleep mode. The integrated LCD module is software-configurable and reduces system components, occupied board space and system costs.

Applications include dashboard displays, medical instruments and monitors, meter reading, handheld terminals and remote reading, display/control units on ovens and microwaves, payment systems, utility meters, gasoline pumps, programmable thermostats and controls, irrigation control, home security systems, exercise equipment and handset displays.

The PIC18F8490/8390/6490/6390 have the performance and features needed for embedded control and meet the display requirements of the segment and touch screen LCD markets. The integrated LCD driver module is capable of driving 128 to 192 LCD segments in 64 or 80-pin packages. Additional features include eight to 16 Kbytes of Flash program memory options and 768 Bytes of SRAM.

The LCD module has four multiplex commons and up to 48 segment drivers. Six power-managed modes have nanoWatt technology, and a 32kHz to 32MHz internal oscillator. They have a core performance of up to 10 MIPS and a 10-bit analogue-to-digital converter with up to 12 signal channels and 100,000 samples a second. They have two analogue comparators, programmable brownout detection and programmable low-voltage detection. Finally they support MI2C/SPI, EUSART (supports LIN) and AUSART communication protocols and have four timers and two capture/compare/PWM modules.

The PIC16F917/916/914/913 offer 28 and 40/44-pin package options for simple, cost-constrained display applications requiring embedded control. 60 to 96 LCD segments can be driven by the integrated driver. Additional features include seven to 14 Kbytes of Flash program memory options, up to 352 bytes of SRAM and 256 bytes of EEPROM data memory. The LCD module has four multiplex commons and up to 24 segment drivers. They have nanoWatt Technology power-managed modes and an 8 MHz internal oscillator, plus five MIPS core performance. A 10-bit analogue-to-digital converter has up to eight signal channels. They have two analogue comparators and support SPI, I2C, and AUSART communication protocols. They have three timers, two capture/compare/PWM Modules and one watchdog timer.

All eight microcontrollers are supported by Microchip's standard development systems including MPLAB Integrated Development Environment (IDE), MPLAB C18 C Compiler, MPLAB ICD 2 In-Circuit Debugger and MPLAB ICE 2000/4000 In-Circuit Emulators.

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