PIC18F448 Data sheet

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  PIC18F248/258/448/458 Datasheet (9/28/2006)


High-Performance RISC CPU:
• Linear program memory addressing up to
2 Mbytes
• Linear data memory addressing to 4 Kbytes
• Up to 10 MIPS operation
• DC – 40 MHz clock input
• 4 MHz-10 MHz oscillator/clock input with
PLL active
• 16-bit wide instructions, 8-bit wide data path
• Priority levels for interrupts
• 8 x 8 Single-Cycle Hardware Multiplier
Peripheral Features:
• High current sink/source 25 mA/25 mA
• Three external interrupt pins
• Timer0 module: 8-bit/16-bit timer/counter with
8-bit programmable prescaler
• Timer1 module: 16-bit timer/counter
• Timer2 module: 8-bit timer/counter with 8-bit
period register (time base for PWM)
• Timer3 module: 16-bit timer/counter
• Secondary oscillator clock option – Timer1/Timer3
• Capture/Compare/PWM (CCP) modules;
CCP pins can be configured as:
- Capture input: 16-bit, max resolution 6.25 ns
- Compare: 16-bit, max resolution 100 ns (TCY)
- PWM output: PWM resolution is 1 to 10-bit
Max. PWM freq. @:8-bit resolution = 156 kHz
10-bit resolution = 39 kHz
• Enhanced CCP module which has all the features
of the standard CCP module, but also has the
following features for advanced motor control:
- 1, 2 or 4 PWM outputs
- Selectable PWM polarity
- Programmable PWM dead time
• Master Synchronous Serial Port (MSSP) with two
modes of operation:
- 3-wire SPI™ (Supports all 4 SPI modes)
- I2C™ Master and Slave mode
• Addressable USART module:
- Supports interrupt-on-address bit
Advanced Analog Features:
• 10-bit, up to 8-channel Analog-to-Digital Converter
module (A/D) with:
- Conversion available during Sleep
- Up to 8 channels available
• Analog Comparator module:
- Programmable input and output multiplexing
• Comparator Voltage Reference module
• Programmable Low-Voltage Detection (LVD) module:
- Supports interrupt-on-Low-Voltage Detection
• Programmable Brown-out Reset (BOR)
CAN bus Module Features:
• Complies with ISO CAN Conformance Test
• Message bit rates up to 1 Mbps
• Conforms to CAN 2.0B Active Spec with:
- 29-bit Identifier Fields
- 8-byte message length
- 3 Transmit Message Buffers with prioritization
- 2 Receive Message Buffers
- 6 full, 29-bit Acceptance Filters
- Prioritization of Acceptance Filters
- Multiple Receive Buffers for High Priority
Messages to prevent loss due to overflow
- Advanced Error Management Features
Special Microcontroller Features:
• Power-on Reset (POR), Power-up Timer (PWRT)
and Oscillator Start-up Timer (OST)
• Watchdog Timer (WDT) with its own on-chip RC
oscillator
• Programmable code protection
• Power-saving Sleep mode
• Selectable oscillator options, including:
- 4x Phase Lock Loop (PLL) of primary oscillator
- Secondary Oscillator (32 kHz) clock input
• In-Circuit Serial ProgrammingTM (ICSPTM) via two pins
Flash Technology:
• Low-power, high-speed Enhanced Flash technology
• Fully static design
• Wide operating voltage range (2.0V to 5.5V)
• Industrial and Extended temperature ranges


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