PIC16C57-XTI/SS - 8-bit 4MHz 3KB OTP MCU 28-SSOP | Microchip
部品番号: PIC16C57-XTI/SS ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.82 | $5.82 |
| 10 | $5.24 | $52.40 |
| 100 | $4.66 | $466.00 |
| 500 | $4.19 | $2,095.00 |
| 1,000 | $3.72 | $3,720.00 |
PIC16C57-XTI/SS 概要
An 8-bit PIC microcontroller is a single-chip computer that combines a CPU, non-volatile program memory (here, One-Time Programmable EPROM), working RAM, and configurable I/O on one die. PIC microcontrollers sit within the broader hierarchy of microcontrollers -> microcontrollers and microprocessors -> integrated circuits -> semiconductors, and dominate cost-sensitive embedded control because the RISC architecture uses only 33 single-word/single-cycle instructions, yielding highly compact code and predictable deterministic timing.
Key features of the PIC16C57-XTI/SS include a 12-bit instruction word, two-level hardware stack, 20-pin equivalent I/O, an 8-bit real-time timer/counter (TMR0), direct/indirect/relative addressing, watchdog timer, power-on reset, and brown-out detection. The EPROM-based program memory allows rapid prototyping before committing to a ROM mask part, while the 4 MHz oscillator supports both RC and crystal/ceramic resonator modes.
Architecturally, the device uses a Harvard bus with separate program and data paths, enabling instruction fetch and data access in the same cycle. CMOS fabrication delivers low power consumption with standby currents typically below 4 uA at 5V, suitable for battery-backed or energy-harvesting designs. With seven or eight special function hardware registers and 33 instruction opcodes, the learning curve is among the shortest in the industry.
Typical applications include appliance controls, security and alarm panels, automotive body electronics (non-safety), low-end remote controls, sensor signal conditioning, lighting ballasts, and small industrial timer or counter modules. The wide 2.5V to 6.0V Vdd range allows direct operation from 3.3V or 5V rails.
When designing with the PIC16C57-XTI/SS, confirm EPROM programming infrastructure (windowless OTP requires a programmer such as MPLAB PM3) and verify the industrial -40C to +85C temperature range matches deployment conditions. For higher pin counts, more memory, or in-circuit programmability, migrate to PIC16F57 or PIC16F84A.
This page synthesizes distributor pricing, drop-in alternatives from the PIC16C5X family, and practical design notes not found in the bare manufacturer datasheet, optimized for procurement and engineering teams evaluating legacy 8-bit MCU replacements.
ドロップイン代替品: PIC16C57-XTI/SS — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: PIC16C57-XTI/SS （同一形状・フットプリント） — 相違点: Operating Temperature, Package, Program Memory Size, Timers.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16C57-XT/SS
✅ ドロップイン✓ 在庫あり
$1.28 / 個
データシートを見る →PIC16C57-10I/SS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16C57-HSI/SS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16C57-LPI/SS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16F57-I/SS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PIC16C57-XTI/SS 最大定格＆電気的特性
| Core Architecture | PIC16 8-bit RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3 KB (2K x 12 words) |
| RAM Size | 72 bytes |
| Maximum CPU Frequency | 4 MHz |
| Instruction Width | 12 bits |
| Number of Instructions | 33 single-word/single-cycle |
| Operating Voltage (Vdd) | 2.5 V to 6.0 V |
| I/O Pins | 20 |
| Timers | 8-bit TMR0 with prescaler (WDT) |
| Hardware Stack | 2 levels |
| Oscillator Modes | RC / XT / HS / LP |
| 動作温度 | -40C to +85C (industrial, -I suffix) |
| パッケージ | 28-SSOP (5.30 mm / 0.209 in body width) |
| 実装タイプ | Surface Mount |
| Tube Quantity | 47 per tube (per Microchip packing spec) |
| Lead-Free / RoHS | Compliant (Pb-free matte-tin finish) |
| Programming Method | External programmer (MPLAB PM3 / PICSTART Plus); OTP - not erasable |
PIC16C57-XTI/SS ピン構成
| ピン 1 | RA2 — Port A bit 2 (bidirectional digital I/O) |
| ピン 2 | RA3 — Port A bit 3 (bidirectional digital I/O) |
| ピン 3 | T0CKI — Timer 0 clock input / RTCC |
| ピン 4 | MCLR — Master Clear (reset, active low) |
| ピン 5 | Vss — Ground reference |
| ピン 6 | RB0 — Port B bit 0 (bidirectional digital I/O) |
| ピン 7 | RB1 — Port B bit 1 (bidirectional digital I/O) |
| ピン 8 | RB2 — Port B bit 2 (bidirectional digital I/O) |
| ピン 9 | RB3 — Port B bit 3 (bidirectional digital I/O) |
| ピン 10 | RB4 — Port B bit 4 (bidirectional digital I/O) |
| ピン 11 | RB5 — Port B bit 5 (bidirectional digital I/O) |
| ピン 12 | RB6 — Port B bit 6 (bidirectional digital I/O) |
| ピン 13 | RB7 — Port B bit 7 (bidirectional digital I/O) |
| ピン 14 | Vdd — Positive supply (2.5 V to 6.0 V) |
| ピン 15 | RC0 — Port C bit 0 (bidirectional digital I/O) |
| ピン 16 | RC1 — Port C bit 1 (bidirectional digital I/O) |
| ピン 17 | RC2 — Port C bit 2 (bidirectional digital I/O) |
| ピン 18 | RC3 — Port C bit 3 (bidirectional digital I/O) |
| ピン 19 | RC4 — Port C bit 4 (bidirectional digital I/O) |
| ピン 20 | RC5 — Port C bit 5 (bidirectional digital I/O) |
| ピン 21 | RC6 — Port C bit 6 (bidirectional digital I/O) |
| ピン 22 | RC7 — Port C bit 7 (bidirectional digital I/O) |
| ピン 23 | RA0 — Port A bit 0 (bidirectional digital I/O) |
| ピン 24 | RA1 — Port A bit 1 (bidirectional digital I/O) |
| ピン 25 | OSC1/CLKIN — Oscillator crystal input / external clock in |
| ピン 26 | OSC2/CLKOUT — Oscillator crystal output / clock out (Fosc/4) |
| ピン 27 | INT — External interrupt input (edge-selectable) |
| ピン 28 | NC — Not connected (per datasheet 28-SSOP pin map; some family variants tie to Vss internally - check datasheet revision) |
主な用途
PIC16C57-XTI/SS の用途: 6 件s: Appliance Control Boards, Security and Alarm Panels, Industrial Timer and Counter Modules, Lighting Ballast and LED Controllers, Remote Controls and IR Transmitters, Automotive Body Electronics (Non-Safety).
Appliance Control Boards
The PIC16C57-XTI/SS fits appliance control boards (washing machines, microwave ovens, dishwashers, refrigerators) because its 4 MHz RISC core delivers 1 MIPS of deterministic throughput needed to scan keypads, drive 7-segment displays, and sequence relay outputs in real time. The 3 KB OTP program memory holds complete state machines for motor control and timer logic, while 20 digital I/O pins directly drive LED indicators, triac opto-isolators, and buzzer PWM. Industrial -40C to +85C temperature rating supports under-cabinet and back-of-appliance thermal environments. The Harvard bus and 33-instruction set simplify MISRA-style code reviews; the OTP memory protects against field firmware tampering. Pair with a ULN2003 line driver for relay coils and an H11AA1 zero-cross opto for triac triggering.
おすすめ
Security and Alarm Panels
The PIC16C57-XTI/SS is widely deployed in PIR-motion security panels, door/window sensor hubs, and basic alarm sirens because its 2-level hardware stack and 33-instruction RISC core are sufficient for zone-state machine logic, TMR0-driven timing, and piezo-buzzer cadence generation. The 20 I/O pins directly scan 4-8 zone loops, drive status LEDs, and trigger relay outputs for sirens and autodialers. The 8-bit TMR0 with prescaler provides accurate 1-Hz tick generation for entry/exit delays. Wide 2.5-6.0V Vdd tolerates depleted backup-battery transients without brown-out, and the EPROM-based OTP prevents reverse engineering of proprietary alarm protocols. For more advanced panels requiring EEPROM logging, migrate to PIC16F628A-I/SS.
おすすめ
Industrial Timer and Counter Modules
The PIC16C57-XTI/SS is suited to industrial DIN-rail timer/counter modules (process timers, conveyor counters, batch controllers) because its deterministic single-cycle instruction execution and TMR0 prescaler (up to 1:256) deliver microsecond-accurate timing without RTOS overhead. The 20 I/O pins drive 7-segment LED displays via BCD latches, accept quadrature encoder inputs, and switch 24 V relay outputs through optos. Industrial -40C to +85C rating handles unheated cabinet environments, and the 2.5-6.0 V Vdd accommodates 24 V -> 5 V buck converter outputs with tolerance for line-voltage dips. EPROM memory protects calibration constants in the field. Pair with HCPL-3700 for AC-line voltage sensing.
おすすめ
Lighting Ballast and LED Controllers
The PIC16C57-XTI/SS controls low-end CFL/LED ballasts, dimmer modules, and decorative lighting controllers where its 4 MHz core and 20 I/O pins scan user inputs (touch pads, IR receivers, pushbuttons) and drive TRIAC or MOSFET dimming stages. TMR0 generates 50/60 Hz zero-cross timing for phase-angle or burst-fire dimming, while the 33-instruction RISC core computes logarithmic dimming curves for human-eye linear brightness. The -40C to +85C industrial temperature range covers enclosed fixture environments, and OTP memory prevents unauthorized modification of dimming presets. The compact SSOP-28 footprint fits inside GU10 bulb bases. For DALI or 0-10 V analog dimming, migrate to PIC16F1823-I/SL.
おすすめ
Remote Controls and IR Transmitters
The PIC16C57-XTI/SS powers single-purpose IR remote controls (TV, set-top box, fan, projector screen) where its 3 KB OTP stores button-to-IR-code lookup tables for NEC, RC5, or SIRC protocols, and its 4 MHz core generates accurate 36-40 kHz carrier frequencies via TMR0 toggle. The 20 I/O pins directly drive a 4x4 or 5x5 keypad matrix with no external decoder, and the wide 2.5-6.0 V Vdd supports both 3 V coin-cell and 4.5 V battery packs. EPROM memory prevents cloning of proprietary IR command sets. The CMOS standby current below 4 uA extends battery life to multi-year durations. Pair with a TSAL6100 IR emitter and BC847 NPN driver.
おすすめ
Automotive Body Electronics (Non-Safety)
The PIC16C57-XTI/SS serves automotive body controllers for seat heaters, mirror adjusters, wiper timers, and ambient lighting where the -40C to +125C automotive grade is unnecessary but the industrial -40C to +85C handles under-dash thermal envelopes. The 20 I/O pins interface directly to 12 V automotive loads via ULN2003 and read switch contacts through RC debounce filters. Brown-out reset and watchdog timer guard against load-dump transients on the 12 V bus. However, this part is NOT AEC-Q100 qualified, so for safety-critical or under-hood applications migrate to PIC16F1823-I/SL or dsPIC33 devices. The EPROM OTP memory locks in calibration for regulatory compliance.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: PIC16C57-XTI/SS — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | PIC16C57-XT/SS | PIC16C57-10I/SS | PIC16C57-HSI/SS | PIC16C57-LPI/SS | PIC16F57-I/SS |
|---|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory Type | OTP EPROM (3 KB) | OTP EPROM (3 KB) | OTP EPROM (3 KB) | OTP EPROM (3 KB) | OTP EPROM (3 KB) | Flash (2 KB) |
| Max CPU Frequency | 4 MHz (1 MIPS) | 4 MHz (1 MIPS) | 10 MHz (2.5 MIPS) | 20 MHz (5 MIPS) | 200 kHz - 4 MHz (LP oscillator) | 20 MHz (5 MIPS) |
| RAM Size | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| Operating Temperature | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 20 |
| Supply Voltage | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 2.0 V to 5.5 V |
| Programming Method | External (OTP, MPLAB PM3) | External (OTP, MPLAB PM3) | External (OTP, MPLAB PM3) | External (OTP, MPLAB PM3) | External (OTP, MPLAB PM3) | ICSP (in-circuit serial programming via RB6/RB7) |
主な差別化要因
- Industrial -40C to +85C temperature grade with SSOP-28 surface-mount footprint （vs PIC16C57-XT/SS)
- 4 MHz XT crystal speed grade optimized for low-power 4 MHz designs （vs PIC16C57-HSI/SS)
- Mature 8-bit RISC core with 33 single-cycle instructions - shortest learning curve in industry （vs PIC16F648A-I/SS)
設計ノート
Decouple Vdd (pin 14) with a 0.1 uF X7R ceramic capacitor placed within 6 mm of the package body and a bulk 1 uF to 10 uF tantalum or aluminum electrolytic at the board entry point. PIC16C5X devices draw brief current spikes on internal bus cycles; inadequate decoupling causes oscillator jitter and brown-out resets. For 5 V designs fed from a 7805 regulator, add a 100 uF electrolytic on the regulator output. Estimated: at 4 MHz and 5 V, active current is approximately 2 mA and standby current below 4 uA per the datasheet's DC characteristics table.
Route the crystal/ceramic resonator traces (OSC1/OSC2, pins 25-26) as short as possible with a ground guard ring or guarded plane beneath them to minimize capacitive loading and stray pickup. Keep oscillator traces away from RB-port switching signals. For RC oscillator mode, place the timing resistor and capacitor within 5 mm of OSC1. Estimated: stray capacitance above 10 pF on OSC1/OSC2 can shift a 4 MHz XT crystal out of its series-resonance specification.
Three critical pitfalls: (1) the PIC16C57-XTI/SS is OTP - it cannot be reprogrammed, so always program a windowless OTP part with verified production firmware or use the PIC16F57-I/SS Flash version during development; (2) the MCLR pin (pin 4) must be tied to Vdd through a 10 kohm pull-up - leaving it floating causes intermittent resets; (3) the PIC16C5X core has only a 2-level hardware stack, so do NOT use deeply nested CALL chains - refactor firmware into flat subroutine structures to avoid stack overflow. Confirm that your compiler's stack-depth warning is enabled during firmware validation.
コンプライアンス情報
RoHS compliant Pb-free matte-tin finish per Microchip product page. NOT AEC-Q100 qualified - for automotive safety applications use AEC-Q100 qualified PIC16F1823-I/SL or dsPIC33 devices. REACH compliance status not explicitly published in retrieved data - flagged as unknown.
