PIC16C56-HS/P - 8-bit 20MHz OTP MCU, 1.5KB, PDIP-18 | Microchip
部品番号: PIC16C56-HS/P ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.65 | $26.50 |
| 100 | $2.3 | $230.00 |
| 500 | $2.05 | $1,025.00 |
| 1,000 | $1.8 | $1,800.00 |
PIC16C56-HS/P 概要
What is an 8-bit OTP microcontroller? An OTP microcontroller is a single-chip computer that integrates a CPU, RAM, ROM/EPROM (program memory), and peripherals on one die. The 'OTP' suffix means the on-chip program memory can be written once by the user with a device programmer (typically using EPROM cells) and cannot be electrically erased afterward, making OTP MCUs the lowest-cost option for moderate-volume production. 8-bit OTP MCUs sit at the lowest tier of the microcontroller hierarchy: microcontroller -> embedded controller -> semiconductor -> integrated circuit. They are widely used in cost-sensitive, low-power, deterministic-control applications such as consumer appliances, sensors, and simple timing/logic-replacement roles.
Key features of the PIC16C56-HS/P include a 12-bit instruction word with 8-bit data path, two-level deep hardware stack, direct/indirect/relative addressing for data and code, an 8-bit real-time clock/counter (TMR0) with 8-bit prescaler, and a watchdog timer for unattended operation. The HS oscillator mode supports high-frequency crystal or resonator operation up to 20 MHz, while the wide 3.0V-5.5V supply range allows operation from a single Li-cell or regulated 5V rail. Compared with other PIC16C5x variants, the 'C56' is the OTP-programmable member and the 'HS' designator specifies the high-speed oscillator option rather than the low-power ('LP') or resistor/capacitor ('RC') modes.
Architecturally, the PIC16C56-HS/P uses a Harvard-style memory map with separate program and data buses, allowing instruction fetch and operand access in the same cycle. Its 12-bit-wide instruction set, fixed-format 33-instruction core, and deterministic 4-clock (200 ns at 20 MHz) instruction cycle make code execution timing fully predictable, which simplifies real-time control loops. Because the program memory is EPROM-based and the part is in PDIP, it is intended for development, prototyping, and low-to-moderate-volume production where windowed ceramic or reprogrammable Flash devices are not required.
Typical applications include appliance controllers, sensor signal conditioning front-ends, simple PWM/fan controllers, LED lighting drivers, security keypads, and any battery-powered device that needs deterministic 8-bit control with low active current. Because the package is through-hole PDIP-18 and the device is mature, the part is also frequently used for legacy board repair and educational/learning platforms. Microchip marks the broader PIC16C56 family as 'Not Recommended for new designs' (NRND), so new designs should normally target the Flash-based PIC16F or enhanced PIC16C5x successors.
When designing with this part, ensure the selected crystal or resonator matches the HS oscillator's load-capacitance specification, place decoupling capacitors (typically 0.1 uF) close to VDD/VSS pins, and reserve the MCLR pin for a proper reset circuit. Because the program memory is OTP, firmware must be fully validated in windowed or emulation parts before committing to PIC16C56-HS/P production programming.
This page synthesizes current distributor pricing, drop-in PDIP-18 alternatives, and practical design notes that go beyond the manufacturer datasheet summary.
ドロップイン代替品: PIC16C56-HS/P — 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: PIC16C56-HS/P （同一形状・フットプリント） — 相違点: Package, Core Architecture, Timers, Program Memory Size, Program Memory Type.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16C56A-HS/P
✅ ドロップイン📋 参考代替品（カタログ未掲載）
PIC16F54-I/P
✅ ドロップイン✓ 在庫あり
$0.68 / 個
データシートを見る →PIC16C56AT-20E/SS
✅ ドロップイン✓ 在庫あり
$2.21 / 個
データシートを見る →PIC16C56AT-20/SS
✅ ドロップイン✓ 在庫あり
$0.85 / 個
データシートを見る →PIC16C56A-20I/SS
✅ ドロップイン✓ 在庫あり
$0.67 / 個
データシートを見る →PIC16C56A-04E/P
✅ ドロップイン✓ 在庫あり
$1.21 / 個
データシートを見る →PIC16F54-E/P
✅ ドロップイン✓ 在庫あり
$0.84 / 個
データシートを見る →PIC16C56-HS/P 最大定格＆電気的特性
| Family | PIC16C5x |
| Core Architecture | 8-bit RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 25 bytes |
| 最大クロック周波数 | 20 MHz |
| Instruction Cycle Time | 200 ns @ 20 MHz (4 clock cycles per instruction) |
| Instruction Set Size | 33 single-word instructions |
| Instruction Width | 12 bits |
| データバス幅 | 8 bits |
| I/O Pins | 12 |
| Timers | TMR0 (8-bit with 8-bit prescaler) |
| Stack Depth | 2 levels (hardware) |
| Oscillator Mode | HS (high-speed crystal/resonator) |
| Supply Voltage Range | 3.0 V to 5.5 V |
| 動作温度範囲 | 0 C to +70 C (commercial) |
| パッケージ | 18-pin PDIP (through-hole) |
| 実装タイプ | Through-Hole |
| MSLレベル | Not applicable (through-hole package) |
| Watchdog Timer | Yes |
| MCLR Pin | Yes (master clear reset) |
PIC16C56-HS/P ピン構成
| ピン 1 | RA2 — Bidirectional I/O port A bit 2 |
| ピン 2 | RA3 — Bidirectional I/O port A bit 3 |
| ピン 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / TMR0 clock input |
| ピン 4 | MCLR — Master Clear (active-low reset input) |
| ピン 5 | VSS — Ground reference |
| ピン 6 | RB0/INT — Bidirectional I/O port B bit 0 / external interrupt input |
| ピン 7 | RB1 — Bidirectional I/O port B bit 1 |
| ピン 8 | RB2 — Bidirectional I/O port B bit 2 |
| ピン 9 | RB3 — Bidirectional I/O port B bit 3 |
| ピン 10 | RB4 — Bidirectional I/O port B bit 4 |
| ピン 11 | RB5 — Bidirectional I/O port B bit 5 |
| ピン 12 | RB6 — Bidirectional I/O port B bit 6 |
| ピン 13 | RB7 — Bidirectional I/O port B bit 7 |
| ピン 14 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| ピン 15 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| ピン 16 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| ピン 17 | RA0 — Bidirectional I/O port A bit 0 |
| ピン 18 | RA1 — Bidirectional I/O port A bit 1 |
主な用途
PIC16C56-HS/P の用途: 7 件s: Appliance Control Board, Sensor Signal Conditioning Front-End, LED Lighting Driver Controller, Security Keypad / Access Controller, Battery-Powered Timing / Logic Replacement, Educational / Learning Platform, Legacy Industrial Board Repair.
Appliance Control Board
The PIC16C56-HS/P is a strong fit for low-cost appliance controllers (washing machines, microwave ovens, rice cookers) where 1.5 KB of OTP program memory and 12 I/O pins are enough to drive relays, scan keypads, and sequence a 7-segment display. The 33-instruction PIC16C5x core executes deterministic 200 ns cycles at 20 MHz, so timing-critical loops (PWM, debounce, triac firing) run without jitter. Placed between a 5 V regulator and the user interface, with TMR0 driving the system tick and the watchdog timer catching lock-ups, it replaces 4-6 discrete logic ICs and lowers BOM cost.
おすすめ
Sensor Signal Conditioning Front-End
In sensor-conditioning modules (thermistor bridges, photodiodes, simple strain gauges) the PIC16C56-HS/P reads an analog front-end through a comparator or external ADC, applies linearization in firmware, and outputs a clean digital value via GPIO. The 25-byte RAM and 1.5 KB OTP are sufficient for lookup tables and modest digital filters, while the 12 I/O pins support multiple sensor channels and a UART-style bit-banged output. Its 3.0-5.5 V supply range lets it run from a single Li-cell or a regulated 5 V rail with no level shifting.
おすすめ
LED Lighting Driver Controller
The PIC16C56-HS/P can act as the timing and dimming controller in low-power LED fixtures, generating PWM via TMR0 + software and decoding a button input for on/off and brightness steps. At 20 MHz the firmware can produce >8-bit PWM resolution at audio-friendly update rates, eliminating flicker. The 12 I/O pins drive multiple LED channels, accept a tactile button, and interface to a low-cost external MOSFET gate driver. Through-hole PDIP-18 is also a plus for hand-repairable lighting modules.
おすすめ
Security Keypad / Access Controller
Keypad-based access controllers are a classic use case for the PIC16C56-HS/P: the 12 I/O pins directly scan a 3x4 or 4x4 matrix keypad, drive a buzzer via TMR0 PWM, and toggle a relay or electronic lock on PIN match. The 1.5 KB OTP comfortably stores a small PIN table and lockout logic, while the 25-byte RAM holds the entered-PIN buffer. The wide 3.0-5.5 V supply range supports both 5 V regulated and battery-backed operation.
おすすめ
Battery-Powered Timing / Logic Replacement
The PIC16C56-HS/P can replace a small network of 555 timers and discrete logic gates, sequencing pumps, valves, or indicator LEDs on a battery-powered schedule. Drawing low operating current from a 3 V coin cell, the MCU consolidates timing, interlocks, and fault detection into one OTP device. Its two-level hardware stack is shallow but adequate for the flat call-graph typical of timing-replacement firmware, and the watchdog timer handles unattended recovery from ESD or supply transients.
おすすめ
Educational / Learning Platform
The PIC16C56-HS/P is widely used in universities and self-study courses to teach 8-bit embedded programming without the complexity of modern peripherals. Its 33-instruction RISC core, 1.5 KB OTP, and 25-byte RAM force students to write tight, memory-aware code, while the PDIP-18 package is easy to breadboard and socket. Migration to PIC16F54-I/P (same pinout, Flash-based) lets students advance to in-circuit reprogramming without changing their hardware platform.
おすすめ
Legacy Industrial Board Repair
For factories still running industrial control boards designed in the late 1990s around the PIC16C5x family, the PIC16C56-HS/P is the exact-fit maintenance part. Its 18-pin PDIP, 33-instruction core, and OTP memory match the original design exactly, avoiding firmware-rewrite costs. According to Microchip's product page, the broader PIC16C56 family is NRND but still manufactured for legacy maintenance, and distributors like Mouser and DigiKey continue to stock it for repair channels.
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: PIC16C56-HS/P — 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 | PIC16C56A-HS/P | PIC16F54-I/P | PIC16C56A-20I/SS | PIC16F54-E/P |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP | 18-pin PDIP (same) | 18-pin PDIP (same) | 20-pin SSOP (different footprint) | 18-pin PDIP (same) |
| Program Memory | 1.5 KB OTP EPROM | 1.5 KB OTP EPROM (same die family) | 0.75 KB Flash | 1.5 KB OTP EPROM | 0.75 KB Flash |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM Size | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
| Program Memory Type | OTP EPROM (one-time programmable) | OTP EPROM | Flash (reprogrammable) | OTP EPROM | Flash (reprogrammable) |
| Temperature Grade | 0 C to +70 C (commercial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) |
主な差別化要因
- Industry-standard PIC16C5x OTP core with broad developer familiarity （vs PIC16F54-I/P)
- 20 MHz high-speed (HS) oscillator option for timing-critical loops （vs PIC16C56-LP/P)
- Through-hole PDIP-18 package - breadboard- and socket-friendly （vs PIC16C56A-20I/SS)
設計ノート
Estimated: at 20 MHz and 5.0 V supply, the PIC16C56-HS/P draws roughly 5-7 mA active and <1 uA in SLEEP mode (figures consistent with the PIC16C5x datasheet's electrical characteristics table). Place a 0.1 uF decoupling capacitor within 5 mm of the VDD pin (pin 14) and a bulk 1-10 uF tantalum or ceramic capacitor at the regulator output. For battery applications, switch to the LP oscillator variant (PIC16C56-LP/P) which cuts operating current roughly tenfold by replacing the HS amplifier with the LP low-power oscillator.
Keep the crystal or resonator within 5-10 mm of the OSC1/OSC2 pins (16 and 15) and route the oscillator traces over a continuous ground pour to minimize radiated EMI. MCLR (pin 4) should be pulled to VDD through a 10 kohm resistor with a 100 nF capacitor to ground for a proper power-on-reset; do not leave MCLR floating because the internal MCLR circuit can false-trigger on ESD events. For through-hole PDIP-18, leave a 0.1 inch (2.54 mm) pin pitch and consider an IC socket for in-circuit firmware-replacement with windowed EPROMs during development.
Because PIC16C56 program memory is OTP EPROM, code must be fully validated before committing to production programming - there is no in-circuit reprogramming path on the final device. Watch the two-level hardware stack: deep subroutine nesting or recursive code will overflow the stack silently. Watchdog timer must be enabled in code or disabled by configuration word; leaving it uninitialized can cause spurious resets. Avoid using the 33-instruction core for arithmetic-heavy code - multiply and divide must be implemented in software and consume cycles and stack space.
Route the HS oscillator traces (OSC1/OSC2) as short, symmetric, parallel traces over a continuous ground pour to reduce EMI susceptibility and crystal overdrive. Place decoupling capacitors close to the VDD/VSS pair and avoid routing noisy digital signals (relay drivers, triac controls) under the MCU or crystal. For noisy environments, add a ferrite bead on the VDD rail entering the MCU. If the design includes a programmer header (e.g. for ICSP via PICkit), bring VPP, PGD, PGC to test points or a 6-pin header - the PIC16C56-HS/P is OTP but the development board often uses a windowed PIC16C56 for debug.
コンプライアンス情報
RoHS, REACH, lead-free, and halogen-free compliance flags were not present in the provided web data for PIC16C56-HS/P; legacy PDIP PIC16C5x parts are often lead-bearing and require current statements from Microchip for EU shipments. AEC-Q100 is not applicable to this commercial-grade MCU; industrial-temperature PIC16C56A-04E/P exists for harsher environments.
