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PIC18F4X50
Pin Diagram:
PDIP, PLCC, TQFP
40 1 MCLR/VPP RB7 39 2 RB6 RA0/AN0 RB5/SDO 38 3 RA1/AN1 37 4 RA2/AN2/VREFRB4/SDI/SDA RB3/CCP2* 36 5 RA3/AN3/VREF+ RB2/INT2/SCK/SCL 35 6 RA4/T0CKI RB1/INT1 34 7 RA5/AN4/SS/LVDIN 33 8 RE0/RD/AN5 RB0/INT0 32 VDD 9 RE1/WR/AN6 10 31 VSS RE2/CLK/AN7 30 11 RD7/SPP7 VDD 29 12 RD6/SPP6 VSS 28 13 OSC1/CLKI RD5/SPP5 27 14 RD4/SPP4 OSC2/CLKO/RA6RC0/T1OSO/T1CKI 26 15 RC7/RX/DT 25 16 RC6/TX/CK RC1/T1OSI/CCP2* 24 17 D+ RC2/CCP1 23 18 DVUSB 19 RD3/SPP3 22 RD0/SPP0 21 20 RD2/SPP2 RD1/SPP1 * RB3 is the alternate pin for the CCP2 pin multiplexing. Pinout subject to change.

40-Pin Enhanced FLASH Microcontroller with Full Speed USB and 10-bit A/D Product Brief

High Performance RISC CPU:
• C-compiler optimized architecture/instruction set: - Source codecompatible with the PIC18CXXX instruction set • Linear program memory addressing; Linear data memory addressing • 256 bytes of EEPROM data memory • Up to 12 MIPs operation: - DC - 48 MHz clock - 4 MHz - 12 MHz clock with PLL active • 16-bit wide instructions, 8-bit wide data path • Priority levels for interrupts • 8 x 8 Single Cycle Hardware Multiplier • Pinout compatible with PIC16C765 (USB)Peripheral Features:
• • • • • • • • High current sink/source 25 mA/25 mA Three external interrupt pins Three 16-bit timer/counters One 8-bit timer/counter Secondary oscillator clock option - Timer1/Timer3 Two Capture/Compare/PWM (CCP) modules USART Synchronous Serial Port with SPI™ Master mode and I2C™ Master/Slave mode • Streaming Parallel Port (SPP)

Special Microcontroller Features:
•100,000 erase/write cycle Enhanced FLASH program memory typical • 1,000,000 erase/write cycle Data EEPROM memory typical • Data EEPROM Retention > 40 years • Self re-programmable under software control • In-Circuit Serial Programming™ (ICSP™) via two pins • Single supply 5V In-Circuit Serial Programming • Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation • Programmable codeprotection • Power saving SLEEP mode • Selectable oscillator options including: - 4X Phase Lock Loop (of primary oscillator) - Secondary Oscillator (32 kHz) clock input - 8-stage clock divider for low power designs • In-Circuit Debug (ICD) via two pins

USB Features:
• Meets USB1.1 full speed specification (12 Mb per second) • 24 endpoints (16 internal, 8 external to SPP) • 512 byte dual portbuffer • Integrated Transceiver • Firmware control of attach/detach • Full speed unbuffered streaming parallel port for external endpoints

Analog Features:
• 8-ch 10-bit Analog-to-Digital Converter (A/D) • Low Voltage Detection (PLVD) module • Programmable Brown-out Reset (PBOR)

CMOS Technology:
• Low power, high speed FLASH/EEPROM technology • Fully static design • USB operating voltagerange - 4.35V to 5.25V (3.3V detached) • Industrial temperature ranges • Low power consumption EEPROM (Bytes) 256 256 10-bit CCP A/D (ch) (PWM) 8 8 2 2 Timers 8-bit/16-bit 1/3 1/3

Program Memory # Single Word Bytes Instructions PIC18F4450 16K 8192 PIC18F4550 32K 16384 Device

Data SRAM (Bytes) 1024 1024

I/O 34 34

PIC18F4X50

USART Yes Yes

© 2001 Microchip Technology Inc.

AdvanceInformation

DS41144C-page 1

PIC18F4X50
NOTES:

DS41144C-page 2

Advance Information

© 2001 Microchip Technology Inc.

Note the following details of the code protection feature on PICmicro® MCUs. • • • The PICmicro family meets the specifications contained in the Microchip Data Sheet. Microchip believes that its family of PICmicro microcontrollers is one of the most secureproducts of its kind on the market today, when used in the intended manner and under normal conditions. There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our knowledge, require using the PICmicro microcontroller in a manner outside the operating specifications contained in the data sheet. The person doing so may be engaged in theft of...
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