Part Number: PIC16F57-I/P

Manufacturer: Microchip Technology

Description: IC MCU 8BIT 3KB FLASH 28DIP

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Technical Specifications of PIC16F57-I/P

Datasheet  PIC16F57-I/P datasheet
Category Integrated Circuits (ICs)
Family Embedded – Microcontrollers
Manufacturer Microchip Technology
Series PIC? 16F
Packaging Tube
Part Status Active
Core Processor PIC
Core Size 8-Bit
Speed 20MHz
Peripherals POR, WDT
Number of I/O 20
Program Memory Size 3KB (2K x 12)
Program Memory Type FLASH
RAM Size 72 x 8
Voltage – Supply (Vcc/Vdd) 2 V ~ 5.5 V
Data Converters
Oscillator Type External
Operating Temperature -40°C ~ 85°C (TA)
Package / Case 28-DIP (0.600″, 15.24mm)
Supplier Device Package 28-PDIP

PIC16F57-I/P General Description

Microchip Technology’s PIC16F5X 8-bit, completely static, Flash-based CMOS microcontrollers are affordable and powerful. It uses a reduced instruction set computer (RISC) design with just 33 one-word, one-cycle instructions. Except for program branches requiring two cycles, all instructions only take one. The PIC16F5X provides performance that is a factor of ten better than other chips in its price range. There is a 2:1 code compression compared to competing 8-bit microcontrollers thanks to the symmetry of the 12-bit wide instructions.

The instructions are simple and straightforward, so less time is spent on development. The PIC16F5X family of products includes cutting-edge capabilities that lessen the system’s budget and energy consumption burden. Because of the Power-on Reset (POR) and Device Reset Timer (DRT), no additional Reset hardware is required. The LP (Low Power) oscillator and the RC (resonantly coupled) oscillator are two of the four possible oscillator configurations. System cost, power, and reliability are all enhanced by features like the Watchdog Timer, code prevention, and power-saving Sleep mode.

Full-featured macro assembler, a software simulator, an inexpensive development programmer, and a full-featured programmer all support PIC16F5X products. All the software is compatible with IBM® PCs and other PC-based computers.

PIC16F57-I/P Features

  • package for 8 pins.
  • 33 Instructions and 2 Stack Levels make up the fundamental core.
  • All instructions are single-cycle, with the exception of program branches, which are double-cycle.
  • Twelve-bit instructions.
  • 8-bit data route.
  • Low current sleep current (100nA).
  • The 8-bit timer only (TMR0).
  • monitor timer (WDT).
  • capability for in-circuit serial programming (ICSPTM).
  • Support for in-circuit debugging.
  • protection for program code.

PIC16F57-I/P Applications

Applications for the PIC16F5X series range from low-power remote transmitters and receivers, pointing devices, and telecom processors to high-speed automotive and appliance motor control. Transmitter codes, motor speeds, receiver frequencies, and other application program customizations may be done quickly and easily thanks to Flash technology.

This microcontroller series is ideal for applications with limited space due to the compact footprint packages, which can be mounted through holes or on a surface. The PIC16F5X series is incredibly adaptable, even in applications that have never considered using a microcontroller (like co-processor applications, replacing “glue” logic in larger systems, and timer functions). This is due to its low cost, low power, high performance, ease of use, and flexible I/O.

Architectural Overview

The PIC16F5X family’s high performance can be attributed to several design elements that are frequently present in RISC microprocessors. The Harvard design that the PIC16F5X employs at first separate buses for program and data access. This increases bandwidth compared to the classic von Neumann design, where data and programs are fetched from the same bus. Moreover, the ability to size instructions differently than the 8-bit wide data word is made possible by separating program and data memory. All single-word instructions are possible due to the 12-bit width of instruction opcodes. A 12-bit instruction can be fetched using a 12-bit wide program memory access bus in a single cycle. Instruction fetch and execution are combined in a two-stage pipeline. As a result, every instruction (33) runs in a single cycle with the exception of program branching.

The 2048 x 12 of program memory is addressed by the PIC16F57 and PIC16F59, whereas 512 x 12 of program memory is addressed by the PIC16F54. Program memory is entirely internal. The register files and data memory of the PIC16F5X can be accessed directly or indirectly. The program counter and all Special Function Registers (SFR) are mapped in the data memory. Any action on any register using any Addressing mode is available with the PIC16F5X’s highly orthogonal (symmetric) instruction set. Because of its symmetrical structure and lack of “unique ideal scenarios,” the PIC16F5X is a straightforward yet effective programming tool. The learning curve is also greatly flattened. The PIC16F5X chip includes a functioning register and an 8-bit ALU.

An all-purpose arithmetic unit is an ALU. It performs arithmetic and Boolean operations between data in the working register and any register file. The addition, shift, subtraction, and logical operations of the 8-bit wide ALU are all possible. Arithmetic operations are always two’s complement in nature unless otherwise specified. The W (working) register often serves as one operand in two-operand instructions. An instantaneous constant or a file register serves as the other operand. The W register or a file register serves as the operand in instructions with a single operand.

An 8-bit working register called the W register is employed in ALU operations. An addressable register is not what it is. Depending on the executed instruction, the Carry (C), Digit Carry (DC), and Zero bits in the STATUS Register can have different values. The C bit acts as the borrow bit in subtraction, while the DC bit acts as the digit borrow-out bit. For examples, refer to the ADDWF and SUBWF instructions.

● Memory Organization

Data memory and program memory are separated in a PIC16F5X. The PIC16F57 and PIC16F59 contain more than 512 words of programmable memory, so they employ a paging technique to handle the excess data. Only one or two bits in the STATUS register are required to access different pages of program memory. Since the PIC16F57 and PIC16F59 have more than 32 registers in their data memory register file, they use a banking system. The File Selection Register is used to access the various data memory banks (FSR).

● Program Memory Organization

The PIC16F54’s 9-bit PC can access 512 bytes of program memory. Using an 11-bit Program Counter, the PIC16F57 and PIC16F59 may access a 2K x 12-bit code memory area. A wraparound occurs if an address is accessed more than the one physically implemented.

● STATUS Register

For programs with memory bigger than 512 words, this register stores the ALU’s arithmetic status, the Reset status, and the page preselect bits. Like every other register, the STATUS register can be the target of any instruction. The ability to write to the Z, DC and C bits of the STATUS register is inhibited if the destination of an instruction that modifies those bits is the STATUS register. The logic of the gadget determines whether or not these bits should be set.

In addition, you cannot alter the values of the TO and PD bits. Therefore, the outcome of an instruction with the STATUS register as the destination may be unexpected. The CLRF STATUS command, for instance, will reset the top three bits and set the Z bit. With u = unaltered, the STATUS register will now read 000u u1uu. As the Z, DC, and C bits of the STATUS register are unaffected by the BCF, BSF, MOVWF, and SWAPF instructions, these are the only ones that should be used to modify the STATUS register.


In conclusion, the Microchip Technology PIC16F5X microcontroller family is a highly efficient and cost-effective solution for various applications. Its RISC design and 33 one-word, one-cycle instructions enable superior performance compared to other microcontrollers in its price range. Furthermore, its compact footprint packages, low power consumption, and flexible I/O make it an ideal choice for space-limited projects that demand high-performance microcontrollers at low cost. The PIC16F5X family also offers various features such as Power-on Reset (POR), Device Reset Timer (DRT), Watchdog Timer, code prevention, and power-saving Sleep mode to ensure optimal system cost, power, and reliability. The series is user-friendly and easy to program, with a highly orthogonal instruction set and a low learning curve. Overall, the PIC16F5X family is a reliable and versatile option that delivers efficient performance for various applications.

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