This is one of my data sheet directories.

Selected Microchip Index Data Sheets

Here are some selected data sheets from Microchip, which holds all of the data sheet copyrights.

AN575

IEEE 754 Compliant Floating Point Routines

AN617

Fixed Point Math Routines

AN660

Floating Point Math Functions

AN670

Floating Point to ASCII Conversion

MPASM User's Guide with MPLINK and MPLIB

MPASM User Manual

Programming Notes

Notes on programming various chips.

PIC16xxx Manual

PICmicro^® Mid-Range MCU Family Reference Manual

PIC12C5xx (40139d.pdf)

8-Pin, 8-Bit CMOS Microprocessor ('508, '509)

PIC12CE5xx (40172b.pdf)

8-Pin, 8-Bit CMOS Microprocessor with EEPROM Data Memory ('518, '519)

PIC12C67x (30561a.pdf)

8-Pin, 8-Bit CMOS Microprocessor with A/D Converter ('671, '672)

PIC12CE67x (40181b.pdf)

8-Pin, 8-Bit CMOS Microprocessor with A/D Converter and EEPROM Data Memory ('673, '674)

PIC12F629/675 (41190a.pdf)

8-Pin FLASH-Based 8-Bit CMOS Microcontrollers ('629, '675)

PIC16C505 (40192b.pdf)

14-Pin, 8-Bit CMOS Microprocessor ('505)

PIC14000 (40122b.pdf)

28-pin Programmable Mixed Signal Microprocessor

PIC16C5x (30453b.pdf)

EPROM/ROM-Based 8-bit CMOS Microcontroller Series ('52, '54, '55, '56, '57, '58)

PIC16C55x (40143b.pdf)

EPROM-Based 8-bit CMOS Microcontroller ('554, '556, '558)

PIC16C6x (30234d.pdf)

8-Bit CMOS Microcontrollers ('61, '62, '63, '64, '65, '66, '67)

PIC16C62x (30235h.pdf)

EPROM-Based 8-bit CMOS Microcontroller ('620, '621, '622)

PIC16C{63A,65B,73B,74B} (30605a.pdf)

28/40-Pin 8-Bit CMOS Microcontrollers ('63A, '65B, '73B, '74B)

PIC16C64x & PIC16C66x (0559a.pdf)

8-Bit EPROM Microcontrollers with Analog Comparators ('641, '642, '661, '662)

PIC16C72 (39016a.pdf)

8-Bit CMOS Microcontrollers with A/D Converter ('72)

PIC16C7x (30390e.pdf)

8-Bit CMOS Microcontrollers with A/D Converter ('72, '73, '74, '76, '77)

PIC16C78x (41171a.pdf)

8-Bit CMOS Microcontrollers with 8-input A/D Converter and 1 D/A output. ('781, '782)

PIC16C84 (30445c.pdf)

8-bit CMOS EPROM Microcontroller ('84)

PIC16F62x (40300b.pdf)

FLASH-Based 8-Bit CMOS Microcontrollers ('628)

PIC16F630/676 (40039a.pdf)

14-Pin Flash-Based 8-Bit CMOS Microcontrollers ('630, '675)

PIC16F7x (30325a.pdf)

FLASH-Based 8-Bit CMOS Microcontrollers ('73, '74, '76, '77)

PIC16F{83,84} (30430c.pdf)

18-pin Flash/EEPROM 8-bit Microcontrollers ('83, '84)

PIC16F84A (35007a.pdf)

18-pin Enhanced Flash/EPROM 8-Bit Microcontroller ('84)

PIC16F{85,86} (30574b.pdf)

18/20 Pin, 8-Bit Microcontroller with Comparators and A/D Product Brief ('85, '86)

PIC16F{87,88,89} (30620a.pdf)

18/20 Pin, Enhanced FLASH Microcontroller ('87, '88, '89)

PIC16F630/676 (40039a.pdf)

14-Pin, 8-Bit CMOS Flash Microcontroller ('630, '676)

PIC16F? (39585b.pdf)

?-Pin, 8-Bit CMOS Flash Microcontroller (')

PIC16F87/88 (39568c.pdf)

18/20-Pin, 8-Bit CMOS Flash Microcontroller (')

PIC16F818/819 (39603a.pdf)

Programming Specification

PIC16F872 (30221a.pdf)

28-Pin, 8-Bit CMOS Flash Microcontroller ('872)

PIC16F87x (30292a.pdf)

28/40-Pin, 8-Bit CMOS Flash Microcontroller ('873, '874, '876, '877)

PIC17C4x (30412c.pdf)

High-Performance 8-Bit CMOS EPROM/ROM Microcontroller ('42, '43, '44)

PIC17C75x (30264a.pdf)

High-Performance 8-Bit CMOS EPROM Microcontrollers ('752, '756)

PIC17C7xx (30289a.pdf)

Hibh-Performance 8-Bit CMOS EPROM Microcontrollers with 10-bit A/D ('752, '756, '762, '766)