Description
PIC18LF46J11 incorporates 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 by as much as 90%. 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, to as little as 4% of normal operational requirements On-the-Fly Mode Switching: The power-managed modes are invoked by user code during operation, allowing the users to incorporate power-saving ideas into their application’s software design. All of the devices in the PIC18F46J11 family offer five different oscillator options, allowing users a range of choices in developing application hardware. These include: Two Crystal modes using crystals or ceramic resonators. Two External Clock modes offering the option of a divide-by-4 clock output. An internal oscillator block, which provides an 8 MHz clock and an INTRC source (approximately 31 kHz, stable over temperature and VDD), as well as a range of six user-selectable clock frequencies, between 125 kHz to 4 MHz, for a total of eight clock frequencies. This option frees an oscillator pin for use as an additional general purpose I/O. A Phase Lock Loop (PLL) frequency multiplier, available to the high-speed crystal, and external and internal oscillators, providing a clock speed up to 48 MHz. The internal oscillator block provides a stable reference source that gives the PIC18F46J11 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 (POR), or wake-up from Sleep mode, until the primary clock source is available. EXPANDED MEMORY The PIC18F46J11 family provides ample room for application code, from 16 Kbytes to 64 Kbytes of code space. The Flash cells for program memory are rated to last in excess of 10000 erase/write cycles. Data retention without refresh is conservatively estimated to be greater than 20 years. The Flash program memory is readable and writable during normal operation. The PIC18F46J11 family also provides plenty of room for dynamic application data with up to 3.8 Kbytes of data RAM.
- Power Management Features with nanoWatt XLP for Extreme Low Power:
- Deep Sleep mode: CPU off, Peripherals off, Currents Down to 13 nA and 850 nA with RTCC
- Able to wake up on external triggers, programmable WDT or RTCC alarm
- Ultra Low Power Wake- up (ULPWU)
- Sleep mode: CPU off, Peripherals off, SRAM on, Fast Wake up, Currents Down to 105 nA Typical
- Idle: CPU off, Peripherals on, Currents Down to 2.3 µA Typical
- Run: CPU on, Peripherals on, Currents Down to 6.2 µA Typical
- Timer1 Oscillator/w RTCC: 1 µA, 32 kHz Typical
- Watchdog Timer: 813 nA, 2V Typical Special Microcontroller Features:
- 5.5V Tolerant Inputs (digital only pins)
- Low Power, High Speed CMOS Flash Technology
- C Compiler Optimized Architecture for Re- Entrant Code
- Priority Levels for Interrupts
- Self- Programmable under Software Control
- 8 x 8 Single Cycle Hardware Multiplier
- Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
- Single Supply In Circuit Serial Programming™ (ICSP™) via Two Pins
- In Circuit Debug (ICD) with Three Breakpoints via Two Pins
- Operating Voltage Range of 2.0V to 3.6V
- On- Chip 2.5V Regulator
- Flash Program Memory of 10,000 Erase/Write Cycles Minimum and 20 Year Data Retention Peripheral Highlights:
- Peripheral Pin Select:
- Allows independent I/O mapping of many peripherals
- Continuous hardware integrity checking and safety interlocks prevent unintentional configuration changes
- Hardware Real Time Clock and Calendar (RTCC):
- Provides clock, calendar and alarm functions
- High- Current Sink/Source 25 mA/25 mA (PORTB and PORTC)
- Four Programmable External Interrupts
- Four Input Change Interrupts
- Two Enhanced Capture/Compare/PWM (ECCP) modules:
- One, two or four PWM outputs
- Selectable polarity
- Programmable dead time
- Auto shutdown and auto restart
- Pulse steering control
- Two Master Synchronous Serial Port (MSSP) modules featuring:
- 3 wire SPI (all 4 modes)
- 1024 byte SPI Direct Memory Access (DMA) channel
- I2C™ Master and Slave modes
- 8 Bit Parallel Master Port/Enhanced Parallel Slave Port
- Two Rail – Rail Analog Comparators with Input Multiplexing
- 10 Bit, up to 13 Channel Analog to Digital (A/D) Converter module:
- Auto acquisition capability
- Conversion available during Sleep
- Self Calibration
- High/Low Voltage Detect module
- Charge Time Measurement Unit (CTMU):
- Supports capacitive touch sensing for touch screens and capacitive switches
- Provides a Precise Resolution Time Measurement for Both Flow Measurement and Simple Temperature Sensing
- Two Enhanced USART modules:
- Supports RS 485, RS 232 and LIN/J2602
- Auto wake up on Start bit
- Auto Baud Detect Flexible Oscillator Structure:
- 1% Accurate High- Precision Internal Oscillator
- Two External Clock modes, up to 48 MHz (12 MIPS)
- Low Power 31 kHz Internal RC Oscillator
- Tunable Internal Oscillator (31 kHz to 8 MHz, ±0.15% Typical, ±1% Max).
- 4x PLL Option
- Secondary Oscillator using Timer1 @ 32 kHz
- Fail- Safe Clock Monitor:
- Allows for safe shutdown if any clock stops
- Two- Speed Oscillator Start up
- Programmable Reference Clock Output Generator
