Description
PIC18F66J16 is a line of low-voltage, general purpose microcontrollers with the main traditional advantage of all PIC18 microcontrollers – namely, high computational performance and a rich feature set – at an extremely competitive price point. These features make the PIC18F87J11 Family a logical choice for many high-performance applications, where an extended peripheral feature set is required, and cost is a primary consideration. All of the devices in the PIC18F87J11 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 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 operation requirements. 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.The PIC18F87J11 family provides ample room for application code, from 64 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 20 years. The Flash program memory is readable, writable, and during normal operation, the PIC18F87J11 Family also provides plenty of room for dynamic application data with up to 3930 bytes of data RAM. In the event that 128 Kbytes of memory are inadequate for an application, the 80-pin members of the PIC18F87J11 Family also implement an External Memory Bus (EMB). This allows the controller’s internal program counter to address a memory space of up to 2 Mbytes, permitting a level of data access that few 8-bit devices can claim. This allows additional memory options, including: Using combinations of on-chip and external memory up to the 2-Mbyte limit Using external Flash memory for reprogrammable application code or large data tables Using external RAM devices for storing large amounts of variable data The PIC18F87J11 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’.
- Flexible Oscillator Structure:
- Four Crystal modes, including High-Precision PLL
- Two External Clock modes, up to 48 MHz
- Internal Oscillator Block:
- Provides 8 user-selectable frequencies from 31 kHz to 8 MHz
- Provides a complete range of clock speeds, from 31 kHz to 32 MHz when used with PLL
- User-tunable to compensate for frequency drift Secondary Oscillator using Timer1 @ 32 kHz
- Fail-Safe Clock Monitor:
- Allows for safe shutdown if any clock stops
- Peripheral Highlights:
- High-Current Sink/Source 25 mA/25mA on PORTB
- and PORTC
- Four Programmable External Interrupts
- Four Input Change Interrupts
- One 8/16-Bit Timer/Counter
- Two 8-Bit Timers/Counters
- Two 16-Bit Timers/Counters
- Two Capture/Compare/PWM (CCP) modules
- Three Enhanced Capture/Compare/PWM (ECCP) modules:
- One, two or four PWM outputs
- Selectable polarity
- Programmable dead time
- Auto-shutdown and auto-restart
- Two Master Synchronous Serial Port (MSSP)
- modules supporting 3-Wire SPI (all 4 modes) and I2C™ Master and Slave modes
- Two Enhanced USART modules:
- Supports RS-485, RS-232 and LIN 1.2
- Auto-wake-up on Start bit
- Auto-Baud Detect
- 8-Bit Parallel Master Port/Enhanced Parallel Slave
- Port (PMP/EPSP) with 16 Address Lines
- Dual Analog Comparators with Input Multiplexing
- 10-Bit, up to 15-Channel Analog-to-Digital Converter module (A/D): Auto-acquisition capability
- Conversion available during Sleep
- External Memory Bus
- (80-pin devices only):
- Address Capability of up to 2 Mbytes
- 8-Bit or 16-Bit Interface
- 12-Bit, 16-Bit and 20-Bit Addressing modes
- Special Microcontroller Features:
- Low-Power, High-Speed CMOS Flash Technology
- Compiler Optimized Architecture for Re-Entrant Code
- Power Management Features:
- Run: CPU on, peripherals on
- Idle: CPU off, peripherals on
- Sleep: CPU off, peripherals off
- 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 3 Breakpoints via Two Pins
- Operating Voltage Range of 2.0V to 3.6V
- 5.5V Tolerant Inputs (digital only pins)
- On-Chip 2.5V Regulator
- Flash Program Memory of 10000 Erase/Write
- Cycles and 20-Year Data Retention
