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1. Feature
1. Communication: PIC18F8722 series Contains a series of serial communications Peripheral equipment, including 2 independent enhanced USART and 2 main SSP modules can SPI and I2C (master-slave) mode Operation. In addition, one of the general I/O Ports can be reconfigured as 8-bit parallel Slave port for direct processor to processor communication.
2. CCP module: all devices in the series Contains two capture/compare/PWM (CCP) Module and three enhanced CCPs (ECCP) Module to maximize control flexibility application. There can be up to four different time bases Used to perform several different operations once. Each of the three ECCP modules provides up to Four PWM outputs, allowing a total of 12 pulse width modulation. ECCP also provides many useful Functions, including polarity selection, Programmable dead zone, automatic shutdown and Restart and half bridge and full bridge Output mode.
3. Self-programming: these devices can write Go to your own program storage space Internal software control. By using the bootloader Routines located in the protected boot block At the top of the program memory, you can Create an application that can update itself site.
4. Extended instruction set: PIC18F8722 The series introduces an optional extension In the PIC18 instruction set, 8 new instructions and an index addressing mode have been added. This Extension, enabled as a device configuration Options, specially designed for optimization Originally developed reentrant application code High-level languages, such as C.
5. 10-bit A/D converter: This module contains Programmable acquisition time, allowing The channel to be selected and the channel to be converted No need to wait for the sampling period to start, and Therefore, the code overhead is reduced.
6. Extended Watchdog Timer (WDT): this The enhanced version includes a 16-bit prescaler, Allows stable extended timeout range Across the operating voltage and temperature. Look Section 28.0 "Electrical Characteristics" overtime time.
2. Power management function
1. Operation: CPU On, Peripherals On
2. Idle: CPU is off, peripherals are on
3. Sleep: CPU is off, peripherals are off
4. Ultra-low 50 nA input leakage
5. Run mode current as low as 25 μA (typical value)
6. Idle mode current as low as 6.8 μA (typical value)
7. Sleep mode current as low as 120 nA (typical value)
8. Timer1 oscillator: 900 nA, 32 kHz, 2V
9. Watchdog timer: 1.6 μA, 2V typical
10. Two-speed oscillator start
3. Flexible oscillator structure
1. Four crystal modes, up to 40 MHz
2. 4x Phase Locked Loop (PLL)-can be used for crystals And internal oscillator
3. Internal oscillator module:
- Quick wake up from sleep and idle state, typical value is 1 μs
- Provides a complete range of clock speeds From 31 kHz to 32 MHz when used with PLL
- User adjustable to compensate for frequency drift
4. Use Timer1 @ 32 kHz auxiliary oscillator
5. Fail-safe clock monitor:
- If the peripheral clock is stopped, a safe shutdown is allowed
4. Surrounding highlights
1. High current sink/source 25 mA/25 mA
2. Three programmable external interrupts
3. Four input change interrupts
4. Enhanced Capture/Compare/PWM (ECCP) Module (40/44 pin devices only):
- One, two or four PWM outputs
- Programmable dead time
- Automatic shutdown and automatic restart
5. Surrounding highlights (continued)
1. Up to 2 capture/compare/PWM (CCP) modules, One with automatic shutdown function (28-pin device)
2. Master Synchronous Serial Port (MSSP) module Supports 3-Wire SPI (all 4 modes) and I2C™ Master-slave mode
3. Enhanced addressable USART module:
- Support RS-485, RS-232 and LIN/J2602
- RS-232 operation using internal oscillator Block (no need for external crystal)
4. 10 bits, up to 13 channels modulus (A/D) Converter module:
- Conversions available during sleep
5. Dual analog comparators with input multiplexing function
6. Programmable 16 levels of high/low voltage Detection (HLVD) module
6. Special microcontroller features
1. C compiler optimized architecture
2. Enhanced flash memory with 100,000 erase/write cycles Program memory typical
3. 1,000,000 erase/write cycles data EEPROM Typical memory
4. Flash memory/data EEPROM retention time: typical 100 years
5. Self-programming under software control
6. Interrupt priority
7. 8 x 8 single-cycle hardware multiplier
8. Extended Watchdog Timer (WDT):
- Programmable period from 4 ms to 131s
9. Single-supply 5V In-Circuit Serial Programming™ (ICSP™) through two pins
10. In-circuit debugging (ICD) through two pins
11. Wide operating voltage range: 2.0V to 5.5V
12. Programmable brown-out reset (BOR) Software enablement options
