Description
PIC18F67K90 combines the traditional advantages of all PIC18 microcontrollers – namely, high computational performance and a rich feature set – with a versatile on-chip LCD driver, while maintaining an extremely competitive price point. These features make the PIC18F87K90 family a logical choice for many high-performance applications where price is a primary consideration All of the devices in the PIC18F87K90 family incorporate a range of features that can significantly reduce power consumption during operation Alternate Run Modes: By clocking the controller from the Timer1 source or the internal RC oscillator, power consumption during code execution can be reduced. Multiple Idle Modes: The controller can also run with its CPU core disabled but the peripherals still active. In these states, power consumption can be reduced even further. On-the-Fly Mode Switching: The power-managed modes are invoked by user code during operation, allowing the user to incorporate power-saving ideas into their application’s software design. nanoWatt XLP: An extra low-power BOR, RTCC and low-power Watchdog Timer. Also, an ultra low-power regulator for Sleep mode is provided in regulator-enabled modes All of the devices in the PIC18F87K90 family offer different oscillator options, allowing users a range of choices in developing application hardware. These include: External Resistor/Capacitor (RC); RA6 available External Resistor/Capacitor with Clock Out (RCIO) Three External Clock modes: – External Clock (EC); RA6 available – External Clock with Clock Out (ECIO) – External Crystal (XT, HS, LP) A Phase Lock Loop (PLL) frequency multiplier, available to the External Oscillator modes which allows clock speeds of up to 64 MHz. PLL can also be used with the internal oscillator An internal oscillator block that provides a 16 MHz clock (±2% accuracy) and an INTRC source (approximately 31 kHz, stable over temperature and VDD) – Operates as HF-INTOSC or MF-INTOSC when block selected for 16 MHz or 500 kHz – Frees the two oscillator pins for use as additional general purpose I/O The internal oscillator block provides a stable reference source that gives the family additional features for robust operation: Fail-Safe Clock Monitor: This option constantly monitors the main clock source against a reference signal provided by the internal oscillator. If a clock failure occurs, the controller is switched to the internal oscillator, allowing for continued low-speed operation or a safe application shutdown. Two-Speed Start-up: This option allows the internal oscillator to serve as the clock source from Power-on Reset, or wake-up from Sleep mode, until the primary clock source is available. The PIC18F87K90 family provides ample room for application code, from 32 Kbytes to 128 Kbytes of code space. The Flash cells for program memory are rated to last up to 10,000 erase/write cycles. Data retention without refresh is conservatively estimated to be greater than 40 years The Flash program memory is readable and writable. During normal operation, the PIC18F87K90 family also provides plenty of room for dynamic application data with up to 3,828 bytes of data RAM. The PIC18F87K90 family implements the optional extension to the PIC18 instruction set, adding 8 new instructions and an Indexed Addressing mode. Enabled as a device configuration option, the extension has been specifically designed to optimize re-entrant application code originally developed in high-level languages, such as ‘C’. Regardless of the memory size, all devices share the same rich set of peripherals (except the 32-Kbyte parts, which have two less CCPs and three less Timers), allowing for a smooth migration path as applications grow and evolve.
- Low-Power Features:
- Power-Managed modes:
- Run: CPU on, peripherals on
- Idle: CPU off, peripherals on
- Sleep: CPU off, peripherals off
- Two-Speed Oscillator Start-up
- Fail-Safe Clock Monitor
- Power-Saving Peripheral Module Disable (PMD)
- Ultra Low-Power Wake-up
- Fast Wake-up, 1 µs Typical
- Low-Power WDT, 300 nA Typical
- Ultra Low 50 nA Input Leakage
- Run mode Currents Down to 5.5 µA, Typical
- Idle mode Currents Down to 1.7 µA, Typical
- Sleep mode Current Down to Very Low 20 nA, Typical
- RTCC Current Down to Very Low 700 nA, Typical
- LCD Current Down to Very Low 300 nA, Typical
- LCD Driver and Keypad Features:
- Direct LCD Panel Drive Capability:
- Can drive LCD panel while in Sleep mode
- Up to 48 Segments and 192 Pixels, Software-Selectable
- Programmable LCD Timing module:
- Multiple LCD timing sources available
- Up to four commons: static, 1/2, 1/3 or 1/4 multiplex
- Bias configuration: Static, 1/2 or 1/3
- Low-Power Resistor Bias Network for LCD Peripheral Highlights:
- Ten or Eight CCP/ECCP modules:
- Seven Capture/Compare/PWM (CCP) modules
- Three Enhanced Capture/Compare/PWM (ECCP) modules
- Eleven 8/16-Bit Timer/Counter modules:
- Timer0 – 8/16-bit timer/counter with 8-bit programmable prescaler
- Timer1, 3, 5, 7 – 16-bit timer/counter
- Timer2, 4, 6, 8, 10, 12 – 8-bit timer/counter
- Three Analog Comparators
- Configurable Reference Clock Output
- Hardware Real-Time Clock and Calendar (RTCC) module with Clock, Calendar and Alarm Functions
- Time-out from 0.5s to 1 year
- Charge Time Measurement Unit (CTMU):
- Capacitance measurement for mTouch™ Sensing
- Time measurement with 1 ns typical resolution
- High-Current Sink/Source 25 mA/25 mA (PORTB and PORTC)
- Up to Four External Interrupts
- Two Master Synchronous Serial Port (MSSP) modules:
- 3/4-wire SPI (supports all four SPI modes)
- I2C™ Master and Slave mode
