PIC16C55-HSI/SS - 8-Bit 20MHz 768B OTP MCU 28-SSOP
MPN: PIC16C55-HSI/SS ✓ فعالPIC16C55-HSI/SS جائزہ
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, ROM/EPROM, and peripherals into one package. The PIC16C5x family belongs to the broader PIC architecture hierarchy: 8-bit MCU -> RISC microcontroller -> Harvard architecture -> embedded controller -> semiconductor. These MCUs use a 12-bit wide instruction word with 8-bit data path, delivering 2:1 code compression over competitors in the same price tier.
Key features include 20 MHz maximum clock, 768 bytes OTP program memory, 24 bytes of general-purpose RAM, 20 digital I/O pins, an 8-bit real-time clock/counter (TMR0), a hardware watchdog timer, and a two-level deep hardware stack. The device supports direct, indirect, and relative addressing modes. It runs from a single 4.5 V to 5.5 V supply and offers 12 I/O lines with high-current sink capability for direct LED driving.
Architecturally, the PIC16C5x employs a fully static CMOS Harvard RISC core with 33 single-cycle instructions, deterministic interrupt response, and a dedicated hardware multiply-by-constant mechanism via RETLW/PCLATH. The 20 MHz oscillator option provides 200 ns instruction cycle and supports DC to 20 MHz operation across the full industrial temperature range of -40C to +85C.
Typical applications include industrial control logic, automotive body electronics, appliance controllers, simple sensor interfaces, and battery-powered embedded subsystems. The 20 MHz speed and 20 I/O pins support mid-complexity sequencing tasks, while the 768-byte program memory suits compact state-machine and protocol-bridge firmware.
When designing with the PIC16C55-HSI/SS, note that OTP memory is one-time programmable and cannot be field-upgraded; choose PIC16C55A flash-based variants for prototype iteration. Always use the MPLAB PM3 programmer or equivalent EPROM programmer with the correct adapter socket, and verify oscillator start-up time at minimum VDD with the crystal or ceramic resonator specified by Microchip.
This page synthesizes distributor pricing, verified drop-in alternatives within the same PIC16C5x family, comparison parameters, and practical design notes that extend beyond the datasheet's pin description and electrical characteristics tables.
کے لیے ڈراپ اِن متبادل PIC16C55-HSI/SS — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C55-HSI/SS (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Program Memory Size, Core Architecture, Program Memory Type, Instruction Set.
PIC16C55A-20I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C55A-04I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C55AT-04/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C55-10I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C55AT-04E/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C558-20/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C55-HSI/SS زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | 8-bit PIC RISC (Harvard) |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 768 bytes (512 x 12) |
| RAM Size | 24 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Cycle | 200 ns |
| Operating Voltage (Vdd) | 4.5 V to 5.5 V |
| I/O Pins | 20 |
| Timers | 1 x 8-bit (TMR0) |
| Watchdog Timer | Yes (hardware) |
| Stack Depth | 2 levels (hardware) |
| Instruction Set | 33 single-cycle instructions |
| Addressing Modes | Direct, Indirect, Relative |
| پیکیج | 28-pin SSOP |
| آپریٹنگ درجہ حرارت | -40C to +85C (industrial) |
| Oscillator Type | External RC/HS, internal options |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Lead-Free / RoHS | Compliant (per DigiKey listing) |
| Programming Method | MPLAB PM3 with 28-pin SSOP adapter |
PIC16C55-HSI/SS پن کنفیگریشن
| پن 1 | RA2 — Port A bit 2 (bidirectional I/O) |
| پن 2 | RA3 — Port A bit 3 (bidirectional I/O) |
| پن 3 | RTCC — Timer/counter clock input (TMR0) |
| پن 4 | MCLR — Master clear reset (active low) |
| پن 5 | Vss — Ground reference |
| پن 6 | RB0 — Port B bit 0 (bidirectional I/O) |
| پن 7 | RB1 — Port B bit 1 (bidirectional I/O) |
| پن 8 | RB2 — Port B bit 2 (bidirectional I/O) |
| پن 9 | RB3 — Port B bit 3 (bidirectional I/O) |
| پن 10 | RB4 — Port B bit 4 (bidirectional I/O) |
| پن 11 | RB5 — Port B bit 5 (bidirectional I/O) |
| پن 12 | RB6 — Port B bit 6 (bidirectional I/O) |
| پن 13 | RB7 — Port B bit 7 (bidirectional I/O) |
| پن 14 | Vss — Ground reference (secondary) |
| پن 15 | OSC1 — Oscillator input |
| پن 16 | OSC2 — Oscillator output |
| پن 17 | RC0 — Port C bit 0 (bidirectional I/O) |
| پن 18 | RC1 — Port C bit 1 (bidirectional I/O) |
| پن 19 | RC2 — Port C bit 2 (bidirectional I/O) |
| پن 20 | RC3 — Port C bit 3 (bidirectional I/O) |
| پن 21 | RC4 — Port C bit 4 (bidirectional I/O) |
| پن 22 | RC5 — Port C bit 5 (bidirectional I/O) |
| پن 23 | RC6 — Port C bit 6 (bidirectional I/O) |
| پن 24 | RC7 — Port C bit 7 (bidirectional I/O) |
| پن 25 | RA0 — Port A bit 0 (bidirectional I/O) |
| پن 26 | RA1 — Port A bit 1 (bidirectional I/O) |
| پن 27 | Vdd — Positive supply voltage (4.5 V to 5.5 V) |
| پن 28 | NC — Not connected (per datasheet package variant) |
عام استعمالات
PIC16C55-HSI/SS کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Control Logic Replacement, Appliance Control Boards, Automotive Body Electronics, Battery-Powered Sensor Nodes, LED Display and Lighting Controllers, Simple Protocol Bridge / Glue Logic.
Industrial Control Logic Replacement
The PIC16C55-HSI/SS suits industrial control logic replacement where a legacy 8-bit OTP MCU footprint must be honored. With 20 MHz CPU speed and 768 bytes of program memory, the device can manage state-machine-based conveyor sequencing, relay drivers, and sensor polling in 24V factory automation lines. The 4.5-5.5 V single supply matches 5 V regulated rails typical of PLC backplanes. Designers should pair the MCU with opto-isolated inputs and high-current sink drivers (ULN2803) since the PIC16C55-HSI/SS ports source/sink up to 25 mA per pin, sufficient for direct relay coil excitation at low duty cycles.
تجویز کردہ
Appliance Control Boards
The PIC16C55-HSI/SS fits white-goods appliance controllers such as washing-machine timers, microwave user interfaces, and dishwasher cycle managers. The 20 MHz execution rate handles debounced keypad scanning plus triac-fired heater control loops within a single instruction cycle budget. Its 20 I/O pins comfortably drive 7-segment LED displays, mode-selector switches, and triac optocouplers (MOC3041) without external I/O expanders. Industrial temperature grade (-40C to +85C) covers under-cabinet and garage-appliance thermal environments. Use watch-dog timer to recover from brown-out during motor inrush events.
تجویز کردہ
Automotive Body Electronics
The PIC16C55-HSI/SS addresses automotive body-electronics modules including seat controllers, mirror adjusters, and simple body-control nodes. With 768-byte OTP, the firmware fits compact tasks like BLDC wiper control, door-lock sequencing, or ambient lighting PWM. The 5V operation aligns with classic automotive 12V-bus regulated rails; for direct 12V-tolerant I/O add external TVS protection. The -HSI industrial temperature range meets cabin environments, though underhood modules require the AEC-Q100 qualified PIC16F equivalent. Always derate I/O current to 10 mA continuous for automotive reliability.
تجویز کردہ
Battery-Powered Sensor Nodes
The PIC16C55-HSI/SS with its low-power CMOS core and SLEEP instruction supports battery-powered sensor nodes for remote monitoring, HVAC thermostats, and simple IoT edge devices. The 20 MHz active mode is engaged only during measurement bursts; in SLEEP mode current drops to a few microamps, enabling multi-year battery life on 2x AA cells with a boost regulator. Its 20 I/O lines accommodate SPI sensor interfaces, 1-Wire temperature probes, and low-power RF module control lines. The 768-byte OTP suits firmware that performs periodic sampling, threshold detection, and infrequent RF transmission bursts.
تجویز کردہ
LED Display and Lighting Controllers
The PIC16C55-HSI/SS operates as an LED matrix display driver or decorative lighting controller, leveraging its 20 high-current I/O pins to multiplex 8x8 LED matrices or 7-segment numeric displays directly. At 20 MHz, software-driven PWM achieves visible-quality dimming at frequencies above 100 Hz, eliminating flicker in architectural and signage applications. The 768-byte program memory holds lookup tables for character fonts, animation patterns, or DMX-512 address decoding. Pair with TPIC6B595 high-current shift registers for expanded channel count beyond 20 outputs.
تجویز کردہ
Simple Protocol Bridge / Glue Logic
The PIC16C55-HSI/SS serves as a low-cost protocol-bridge MCU converting between UART, SPI, and I2C domains in legacy equipment upgrade scenarios. The PIC16C5x Harvard core with 33 single-cycle instructions executes bit-banged protocol translation in real time, replacing discrete glue logic that would otherwise require PAL/GAL devices. 768-byte OTP holds the translation state machine, and 24-byte RAM covers small receive buffers. Industrial temperature range suits factory-floor retrofit installations where protocol adapters must operate near motors and VFDs.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C55-HSI/SS — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16C55A-20I/SS | PIC16C55A-04I/SS | PIC16C55AT-04/SS | PIC16C55-10I/SS | PIC16C55AT-04E/SS | PIC16C558-20/SS |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 4 MHz | 4 MHz | 10 MHz | 4 MHz | 20 MHz |
| Program Memory Size | 768 bytes (512 x 12) OTP | 768 bytes OTP | 768 bytes OTP | 768 bytes OTP | 768 bytes OTP | 768 bytes OTP | 2048 bytes (1.5K x 12) OTP |
| RAM Size | 24 bytes | 24 bytes | 24 bytes | 24 bytes | 24 bytes | 24 bytes | 68 bytes |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 20 | 20 |
| Operating Voltage | 4.5 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 4.5 V to 5.5 V | 3.0 V to 5.5 V | 2.5 V to 5.5 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +125C (extended) | -40C to +85C |
اہم امتیازی خصوصیات
- Highest 20 MHz CPU speed within the PIC16C5x 28-SSOP family (بمقابلہPIC16C55A-04I/SS)
- Industrial temperature range standard for legacy OEM designs (بمقابلہPIC16C55AT-04E/SS)
- Compact 768-byte OTP for cost-sensitive production runs (بمقابلہPIC16C558-20/SS)
ڈیزائن نوٹس
The PIC16C55-HSI/SS operates from a single 4.5 V to 5.5 V supply. Place a 100 nF decoupling capacitor as close as possible between Vdd (pin 27) and Vss (pin 14), plus a bulk 10 uF tantalum or aluminum on the supply rail. For noisy industrial environments add a ferrite bead in series with Vdd and a TVS diode (5.1 V) for transient suppression. Estimated: at 20 MHz active current is approximately 10 mA and sleep current drops below 5 uA - verify with the PIC16C5x datasheet electrical characteristics table for your specific revision.
For -HSI 20 MHz operation use a parallel-resonant crystal with 33 pF load capacitors on OSC1/OSC2 (pins 15/16). Series resistors of 100 ohm in each oscillator line reduce drive level and EMI. For ceramic resonator applications use a three-terminal resonator with built-in capacitors. Avoid running the -HSI variant at supply voltages below 4.75 V as the oscillator start-up margin is reduced. Estimated: instruction cycle = 1/(Fosc/4) = 200 ns at 20 MHz.
Route the MCLR (pin 4) signal with a short trace and 10 kohm pull-up to Vdd, plus a 100 nF capacitor to ground for noise immunity - omit this capacitor only if in-circuit programming via high-voltage MCLR is required. Keep the oscillator traces short (under 10 mm), shield them with a ground pour, and avoid routing digital signals beneath the crystal/oscillator area. Place the ICSP programming connector (RB6/RB7/RA0/MCLR/Vss/Vdd) on the board edge for production programming access without disassembling the enclosure.
Do not assume PIC16C55A register-level compatibility with PIC16C55 - the OPTION register and TRIS port directions may differ between silicon revisions. Always consult the PIC16C55A errata and reference manual before substituting the A-suffix variant. PIC16C5x has a 2-level hardware stack only (no software stack pointer) - deep subroutine nesting will silently overflow. OTP EPROM cannot be erased - production units with firmware bugs must be physically replaced; for development use the JW windowed ceramic package or migrate to PIC16F flash-based pin-compatible parts (PIC16F57 or PIC16F72 with package change).
تعمیل کی معلومات
RoHS and lead-free compliant per DigiKey product listing (319794). Not AEC-Q100 qualified - the PIC16C55-HSI/SS is positioned for industrial and consumer use; for AEC-Q100 automotive designs migrate to PIC16F57 or PIC16F72 with qualification. REACH compliance status inferred from Microchip product declaration; halogen-free status not explicitly stated in available data.
