PIC18F87J90 - Memory Extension for 8-bit LCD PIC® MCUs
PIC18F87J90 - Memory Extension for 8-bit LCD PIC® MCUs
Microchip announced the PIC18F87J90 8-bit direct LCD-drive microcontrollers with nanoWatt technology, the first 8-bit MCUs to include Real-Time Clock & Calendar (RTCC) and Charge Time Measurement Unit (CTMU) peripherals, enabling capacitive touch-sensitive applications or precise time measurement.
The PIC18F87J90 offer 64... 128 kB Flash and 4 kB RAM, extending the memory reach and peripheral set of Microchip’s LCD MCU portfolio. Furthermore, they are pin-compatible with Microchip’s PIC18F85J90 devices, providing an easy migration path across Microchip’s entire LCD-drive MCU family, simplifying application upgrades.
The on-board LCD module contains a software-controlled contrast controller, providing display boost or dimming functionality to compensate for environmental variations such as lighting or temperature. Microchip’s unique nanoWatt Technology helps systems maintain a low power profile, even allowing the display driver to continue operating during sleep mode. The RTCC also operates in sleep mode, ensuring real-time tracking isn’t impeded by low-power operation. With this peripheral set, engineers can quickly and easily add user interfaces features such as capacitive or inductive touch-sensing to their display applications.
Features
- Up to 12 MIPS performance
- C Compiler optimized RISC architecture
- 8x8 single cycle hardware multiply
- Internal oscillator support 31 kHz to 8MHz and 4 x PLL
- Voltage range 2.0...3.6 V
- LCD Module:
- An integrated LCD driver module, capable of driving 48 segments and 4 commons for LCD display (192 pixels)
- Integrated LCD voltage boost regulator - nanoWatt power managed modes: Run, idle and down to 0.1uA SLEEP
- Analog Features:
- 10-bit ADC, 12 channels, 100K samples per second
- Low voltage detection module
- Brown-out-reset module
- 2 analog comparators - Other peripherals:
- Master synchronous serial port supports SPI™ and I²C™ master and slave mode
- EUSART module including LIN bus support
- 4 timer modules
- 2 CCP
- Real-time clock calendar
- Charge Time Measurement Unit (CTMU) for capacitive touch
Key Applications
- Handheld meters
- Thermostats
- Home security
- Portable medical devices
- Utility metering products
