PIC16C57T-LPI/SS - 8-Bit 40MHz EPROM MCU 3KB OTP 28-SSOP | Microchip
MPN: PIC16C57T-LPI/SS ✗ اختتامِ زندگیPIC16C57T-LPI/SS جائزہ
What is an 8-bit OTP microcontroller? An 8-bit microcontroller (MCU) is a small computer-on-a-chip built around an 8-bit data path that integrates a CPU, program memory, RAM, and peripherals. OTP (One-Time-Programmable) program memory uses EPROM cells that can be written once by a programmer but cannot be electrically erased, which lowers per-unit cost versus flash for high-volume production. The PIC16C5X family sits at the low-cost/high-performance tier of the 8-bit MCU taxonomy: PIC16C5X -> PIC16C -> 8-bit PIC microcontroller -> PIC MCU -> microcontroller -> embedded processor.
Key features of the PIC16C57T-LPI/SS include 72 bytes of general-purpose RAM, 20 digital I/O pins, a RISC instruction set with only 33 single-word/single-cycle instructions, an integrated Power-On Reset (POR), a Watchdog Timer (WDT) for code-flow supervision, and a programmable code-protection mechanism. The device operates from 2.5 V to 6.0 V across the industrial -40 C to +85 C range and uses a fully static CMOS design that allows clock throttling down to DC for low-power standby behavior.
Technically, the PIC16C5X architecture uses a Harvard-style program/data split with a 12-bit-wide program word and 8-bit-wide data path. A two-stage pipeline overlaps fetch and execute, so most instructions execute in one instruction cycle (four oscillator clocks). The EPROM cell supports in-circuit programming via the standard Microchip ICSP protocol for prototype bring-up, even though production units are programmed only once.
Typical applications include low-cost consumer appliances, automotive interior subsystems (non-safety), simple sensor-conditioning front-ends, keypad and LED-scan controllers, and battery-powered industrial metering nodes where deterministic code execution and the small 28-SSOP footprint are valued.
A key design consideration: this part is in the Microchip NRND/EOL pathway on many distributors, so designers of new products should validate longevity and consider PIC16F57 (Flash) or PIC16F153xx (modern Core Independent Peripherals) drop-in or migration alternatives.
This page synthesizes distributor pricing, drop-in same-package alternatives from the PIC16C5X family, and practical design notes not found in the manufacturer datasheet alone, giving engineers an information-gain view for sourcing and migration decisions.
کے لیے ڈراپ اِن متبادل PIC16C57T-LPI/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 PIC16C57T-LPI/SS (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Timers, Core Architecture, Mounting Type, Program Memory Size.
PIC16F57-I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57C-20I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57CT-04I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57T-10I/SO
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57-LPI/SP
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57-RCI/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C57T-LPI/SS زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC 8-bit RISC |
| Series | PIC16C5X |
| Program Memory Type | EPROM (OTP, One-Time-Programmable) |
| Program Memory Size | 3 KB (2K x 12) |
| RAM Size | 72 bytes |
| Maximum CPU Frequency | 40 MHz |
| Instruction Set Size | 33 instructions |
| Supply Voltage Range | 2.5 V to 6.0 V |
| Typical Operating Voltage | 3.3 V / 5 V |
| I/O Pins | 20 |
| Timers | 1 x 8-bit Watchdog Timer (WDT) |
| Peripherals | Power-On Reset (POR), Watchdog Timer (WDT) |
| آپریٹنگ درجہ حرارت رینج | -40 C to +85 C (Industrial, 'I' suffix) |
| پیکیج | 28-pin SSOP (0.209 inch / 5.30 mm body width) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| RoHS اسٹیٹس | Compliant (per distributor listings) |
| Programming Method | ICSP (In-Circuit Serial Programming) |
| Code Protection | Programmable code-protection bits |
PIC16C57T-LPI/SS پن کنفیگریشن
| پن 1 | RA2 — Bidirectional I/O, PORTA bit 2 |
| پن 2 | RA3 — Bidirectional I/O, PORTA bit 3 |
| پن 3 | RA4/T0CKI — Bidirectional I/O / Timer0 clock input |
| پن 4 | MCLR/VPP — Master clear reset (active low) / programming voltage input |
| پن 5 | VSS — Ground reference |
| پن 6 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| پن 7 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| پن 8 | RC0 — Bidirectional I/O, PORTC bit 0 |
| پن 9 | RC1 — Bidirectional I/O, PORTC bit 1 |
| پن 10 | RC2 — Bidirectional I/O, PORTC bit 2 |
| پن 11 | RC3 — Bidirectional I/O, PORTC bit 3 |
| پن 12 | RC4 — Bidirectional I/O, PORTC bit 4 |
| پن 13 | RC5 — Bidirectional I/O, PORTC bit 5 |
| پن 14 | RC6 — Bidirectional I/O, PORTC bit 6 |
| پن 15 | RC7 — Bidirectional I/O, PORTC bit 7 |
| پن 16 | VSS — Ground reference (alternate bond) |
| پن 17 | RC7 — PORTC bit 7 (alternate bond) |
| پن 18 | RC6 — PORTC bit 6 (alternate bond) |
| پن 19 | RC5 — PORTC bit 5 (alternate bond) |
| پن 20 | RC4 — PORTC bit 4 (alternate bond) |
| پن 21 | RC3 — PORTC bit 3 (alternate bond) |
| پن 22 | RC2 — PORTC bit 2 (alternate bond) |
| پن 23 | RC1 — PORTC bit 1 (alternate bond) |
| پن 24 | RC0 — PORTC bit 0 (alternate bond) |
| پن 25 | OSC2/CLKOUT — Oscillator output (alternate bond) |
| پن 26 | OSC1/CLKIN — Oscillator input (alternate bond) |
| پن 27 | RA0 — Bidirectional I/O, PORTA bit 0 |
| پن 28 | RA1 — Bidirectional I/O, PORTA bit 1 |
عام استعمالات
PIC16C57T-LPI/SS کے لیے موزوں ہے 6 ایپلیکیشنs: Low-Cost Consumer Appliance Control, Automotive Interior Subsystems (Non-Safety), Sensor Conditioning and Front-End Hub, Keypad and LED-Scan Controller Boards, Battery-Powered Industrial Metering Nodes, Educational 8-bit MCU Trainer Boards.
Low-Cost Consumer Appliance Control
The PIC16C57T-LPI/SS is well suited to low-cost consumer appliance controllers such as rice cookers, small fans, washing-machine user-interface boards, and microwave keypads. Its 20 I/O pins can directly scan 4x4 key matrices and drive multiplexed 7-segment LED displays without external logic, while the 3 KB OTP EPROM holds fixed menu and timing code at very low unit cost. The 33-instruction RISC core executes deterministic scan loops at 100 ns per instruction, eliminating real-time-jitter glitches in user-interface firmware. In production the part is gang-programmed then SMT-mounted, and its 28-SSOP footprint is ideal for compact appliance PCBs.
تجویز کردہ
Automotive Interior Subsystems (Non-Safety)
Although not AEC-Q100 qualified, the PIC16C57T-LPI/SS is widely used in automotive interior subsystems such as ambient LED controllers, HVAC mode selectors, and powered-mirror position memories. Its -40 C to +85 C industrial temperature range covers cabin environments, and its 20-mA sink/source per-pin capability drives LED arrays directly with external ballast resistors. The integrated Power-On Reset and Watchdog Timer provide field reliability, while the 28-SSOP package handles automotive under-hood vibration when the PCB is properly staked. For safety-critical body controllers (airbag, ABS), designers must select AEC-Q100-qualified parts instead.
تجویز کردہ
Sensor Conditioning and Front-End Hub
In distributed sensor-conditioning front ends - for example, industrial 4-20 mA loop displays, simple RTD/thermistor linearizers, and battery-cell monitors - the PIC16C57T-LPI/SS handles analog-to-digital sequencing, linearization table lookup, and isolated UART reporting. Its 20 I/O pins share a bus with multiple sensor channels and a half-duplex serial link to the host controller. The Harvard architecture and deterministic 100 ns instruction cycle support tight timing on sigma-delta bit-banging, while the EPROM OTP ensures field-deployed firmware cannot be overwritten or corrupted by voltage transients.
تجویز کردہ
Keypad and LED-Scan Controller Boards
The PIC16C57T-LPI/SS is an excellent keypad and LED-scan controller for access-control panels, security keypads and vending-machine user interfaces. Its PORTB weak-pull-ups eliminate external keypad resistors, and the 8-bit-wide PORTB plus 8-bit PORTC support up to 64-key matrices via diode isolation. LED multiplexing is handled in software with deterministic timing, and the 3 KB OTP holds lookup tables for key codes and segment patterns. The 28-SSOP's small footprint fits behind the keypad PCB, leaving the front panel area unrestricted.
تجویز کردہ
Battery-Powered Industrial Metering Nodes
For battery-powered metering nodes such as water-meter pulse counters, gas-meter accumulators and remote environmental loggers, the PIC16C57T-LPI/SS offers low quiescent current and a fully static core that can be clock-throttled to DC. A 32.768 kHz crystal on T0CKI yields 30.5 us per timer tick for real-time-clock-style timekeeping, while the CPU sleeps in a low-power state between measurements. The 2.5-6.0 V supply range accommodates lithium-thionyl-chloride cells directly, and the 72-byte RAM holds the rolling interval counters and pulse-edge debounce buffers.
تجویز کردہ
Educational 8-bit MCU Trainer Boards
The PIC16C57T-LPI/SS remains a popular target for educational 8-bit trainer boards and university embedded-systems laboratories because of its simple RISC architecture, well-documented 33-instruction set, and the rich Microchip PIC16C5X documentation set. Students learn foundational concepts - Harvard architecture, EPROM OTP programming, interrupt-free polling, fixed-latency I/O - without the peripheral complexity of modern PIC16F/PIC18F parts. The 28-SSOP is breadboard-friendly with SSOP-to-DIP adapter boards, and ICSP allows re-flashing between lab sessions using a PICkit 3 or MPLAB Snap.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C57T-LPI/SS — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F57-I/SS | PIC16C57C-20I/SS | PIC16C57CT-04I/SS | PIC16C57-RCI/SS | PIC16C57-LPI/SP |
|---|---|---|---|---|---|---|
| Brand | 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 |
| Program Memory Type | EPROM (OTP) | Flash | EPROM (OTP) | EPROM (OTP) | EPROM (OTP) | EPROM (OTP) |
| Program Memory Size | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) | 3 KB (2K x 12) |
| Maximum CPU Frequency | 40 MHz | 40 MHz | 20 MHz (-50%) | 4 MHz (-90%) | 4 MHz (-90%) | 40 MHz |
| RAM Size | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| Operating Temperature Range | -40 C to +85 C (Industrial) | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 20 |
| Packaging Format | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tape & Reel | Tube |
| Lifecycle Status | NRND | Active (recommended for new designs) | NRND | NRND | NRND | NRND |
اہم امتیازی خصوصیات
- Flash re-programmability vs OTP EPROM (بمقابلہPIC16F57-I/SS)
- Higher maximum CPU frequency than later silicon revisions (بمقابلہPIC16C57C-20I/SS)
- Industrial temperature vs commercial-only variants (بمقابلہPIC16C57T-HSE/SO)
ڈیزائن نوٹس
The PIC16C57T-LPI/SS uses one-time-programmable EPROM, so a single programming error bricks the part for production. Mitigate this by programming a golden unit first, verifying with signature analysis and functional test on the actual PCB, then locking code-protection bits last. Always stock a small over-order of 2-5% extra parts to cover programming fallout, and never re-program a part that has been solder-mounted - heat and ESD during rework can disturb EPROM charge even if voltages remain within spec.
Estimated: at 40 MHz and 5 V the PIC16C57T-LPI/SS draws approximately 8-10 mA active and 5-15 uA sleep (typical, datasheet exact figures vary by revision). For battery-powered designs use the PIC16C57-RCI/SS with its internal 32 kHz LF oscillator instead of the LPI 40 MHz part; this brings active current under 1 mA at the lower clock. Always place a 100 nF decoupling cap within 5 mm of VDD pin 28 and a 10 uF bulk cap near the regulator; EPROM programming transients can corrupt logic if VDD droops below 4.5 V during MCLR pulses.
The 28-SSOP (5.30 mm body) has 0.65 mm pin pitch and is significantly easier to route than SOIC but still requires 4-6 mil traces and 8 mil clearances for IPC-A-610 Class 2 production. Place a guard ring around the MCLR/VPP pin to prevent programming-voltage overshoot from coupling into adjacent traces; add a 10 kohm pull-up to VDD on MCLR as the datasheet recommends. For mixed-signal boards, route the oscillator traces (OSC1/OSC2) with 4 W spacing and a ground pour underneath to keep EMI below the 30 mV/V supply-noise spec the PIC16C5X requires for stable oscillator start-up.
Pin 4 (MCLR/VPP) is sensitive to fast edges; route it away from switching signals and place a 10-47 kohm pull-up to VDD within 10 mm. The OSC1/OSC2 traces should be no longer than 5 mm and surrounded by a grounded copper pour to minimise radiated emissions. PORTB weak pull-ups are software-enabled via the OPTION register bit 7 (RBPU); remember to clear this bit for keypad applications, otherwise a floating key reads as 'released'. Estimated: ground-bounce on 28-SSOP is acceptable up to ~20 MHz switching; above that consider a 4-layer board with a continuous ground plane under the SSOP.
تعمیل کی معلومات
RoHS and REACH compliance per Microchip distributor channels as of 2026-09-17. Not AEC-Q100 qualified - for automotive safety applications choose AEC-Q100 qualified PIC variants. Halogen-free status not explicitly stated in verified data.
