PIC16C770-E/SS - 8-bit OTP MCU, 3.5KB, 16 I/O, 20-SSOP | Microchip
部品番号: PIC16C770-E/SS ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $4.12 | $4.12 |
| 10 | $3.72 | $37.20 |
| 100 | $3.3 | $330.00 |
| 500 | $2.95 | $1,475.00 |
| 1,000 | $2.62 | $2,620.00 |
PIC16C770-E/SS 概要
What is a PIC16C OTP microcontroller? An OTP (One-Time-Programmable) MCU is a microcontroller whose program memory can be written only once by the user, after which the bit pattern is permanent. The PIC16C770 sits within the broader PIC16C mid-range 8-bit family (PIC16C7xx), itself part of Microchip's PIC16 architectural hierarchy (8-bit microcontroller -> embedded controller -> semiconductor). This hierarchy positions the PIC16C770 as a code-locked, low-cost solution ideal for mature, stable firmware in industrial and appliance control where field updates are unnecessary.
Key differentiating specifications include the 12-bit on-chip Analog-to-Digital Converter (ADC), an asynchronous USART for serial communications, two analog comparators with programmable reference, an 8-bit timer/counter and a 16-bit timer/counter, and a programmable watchdog timer. The 20 MHz oscillator yields a 200 ns instruction cycle, and the core supports 35 single-word instructions. Brown-out Reset (BOR) circuitry monitors Vdd to prevent code execution at unsafe voltage levels.
Architecturally, the PIC16C770 uses a Harvard-style bus with separate program and data paths, 14-bit wide instruction words, and a 2-stage pipeline. Its peripheral set is rich for its era: the 12-bit ADC delivers up to 8 analog input channels, the USART supports RS-232/RS-485-style asynchronous links, and the analog comparators can drive hardware interrupts. Brown-out Reset and Power-on Reset are standard.
Typical applications include appliance control (white goods, HVAC damper drives), industrial sensors with analog front ends, low-end motor control loops, and embedded control boards where cost-per-unit outweighs the need for in-field firmware upgrades. The -E temperature grade (extended, -40C to +125C) makes it suitable for non-automotive harsh environments.
When designing with the PIC16C770-E/SS, plan development on a windowed or flash sibling first (e.g., PIC16F77) because OTP parts cannot be re-programmed. Verify the 20 MHz maximum oscillator against the chosen resonator load capacitance, and respect the SSOP thermal pad recommendations for high-density PCBs.
This page synthesizes Microchip parametric data, distributor pricing and inventory as of 2026-09-19, and a drop-in alternatives comparison not found in the standalone datasheet, giving engineers an integrated procurement and substitution reference.
ドロップイン代替品: PIC16C770-E/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: PIC16C770-E/SS （同一形状・フットプリント） — 相違点: Package, Program Memory Size, Core Architecture, ADC, Operating Temperature.
クイック比較ツール — 並列比較する代替部品を選択:
PIC16C770-I/SS
✅ ドロップイン✓ 在庫あり
$2.98 / 個
データシートを見る →PIC16C770T-E/SS
✅ ドロップイン✓ 在庫あり
$2.85 / 個
データシートを見る →PIC16C73B-20/SS
✅ ドロップイン✓ 在庫あり
$4.56 / 個
データシートを見る →PIC16C711-04/SS
✅ ドロップイン✓ 在庫あり
$1.08 / 個
データシートを見る →PIC16C716T-20/SS
✅ ドロップイン✓ 在庫あり
$2.05 / 個
データシートを見る →PIC16C712T-04I/SS
✅ ドロップイン✓ 在庫あり
$3.9 / 個
データシートを見る →PIC16C770-E/SS 最大定格＆電気的特性
| Family | PIC16C7xx |
| Core | 8-bit PIC16C mid-range |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM | 256 bytes |
| Max CPU Frequency | 20 MHz |
| Instruction Cycle | 200 ns (at 20 MHz) |
| I/O Pins | 16 |
| ADC | 12-bit, 8 channels |
| USART | 1 (async) |
| Timers | 1 x 8-bit, 1 x 16-bit |
| Analog Comparators | 2 |
| Watchdog Timer | Yes (WDT) |
| Brown-out Reset | Yes |
| 電源電圧 | 4.0 V to 6.0 V (5 V nominal) |
| 動作温度 | -40C to +125C (-E extended grade) |
| パッケージ | 20-SSOP (0.209 in / 5.30 mm width) |
| 実装タイプ | Surface Mount |
PIC16C770-E/SS ピン構成
| ピン 1 | MCLR/Vpp — Master Clear (Reset) input / programming voltage |
| ピン 2 | RA0/AN0 — Digital I/O / analog input channel 0 |
| ピン 3 | RA1/AN1 — Digital I/O / analog input channel 1 |
| ピン 4 | RA2/AN2/VREF- — Digital I/O / analog input / ADC VREF- |
| ピン 5 | RA3/AN3/VREF+ — Digital I/O / analog input / ADC VREF+ |
| ピン 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| ピン 7 | RA5/AN4/SS — Digital I/O / analog input / SPI slave select |
| ピン 8 | Vss — Ground reference |
| ピン 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| ピン 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| ピン 11 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output / clock input |
| ピン 12 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| ピン 13 | RC2/CCP1 — Digital I/O / Capture/Compare/PWM 1 |
| ピン 14 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| ピン 15 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| ピン 16 | RC5/SDO — Digital I/O / SPI data out |
| ピン 17 | RC6/TX/CK — Digital I/O / USART TX / clock |
| ピン 18 | RC7/RX/DT — Digital I/O / USART RX / data |
| ピン 19 | Vss — Ground reference |
| ピン 20 | VDD — Positive supply voltage |
主な用途
PIC16C770-E/SS の用途: 6 件s: Appliance Control (White Goods), Industrial Sensor Signal Conditioning, Low-End Motor Control Loops, Embedded Control Boards with USART Link, Analog Front-End and Comparator-Based Designs, HVAC and Building Automation.
Appliance Control (White Goods)
The PIC16C770-E/SS is well-suited for appliance control boards in washing machines, dishwashers, and HVAC damper actuators. Its 3.5 KB OTP program memory holds fixed control algorithms for motor timing, sensor sampling, and user-interface handling, while the 12-bit ADC reads thermistor or pressure-sensor signals directly from the appliance harness. The 16 I/O pins drive relays, triac gates, and LED indicators without external multiplexing. Compared with a flash MCU, the OTP architecture lowers unit cost by approximately 15-25 percent at production volumes of 50K and above. The -E extended temperature grade supports under-hood and behind-panel thermal environments up to 125 C, while Brown-out Reset prevents firmware mis-execution during brown-out events common with inductive loads.
おすすめ
Industrial Sensor Signal Conditioning
In distributed industrial sensing nodes, the PIC16C770-E/SS acts as a local controller that samples analog signals, applies digital filtering, and transmits processed values via the on-chip USART. The 12-bit ADC provides 4096 discrete codes across its 0 to 5 V input range, yielding sub-millivolt resolution for bridge sensors, load cells, and 4-20 mA loop receivers. The 256-byte RAM holds a rolling sample buffer for moving-average filters. Brown-out Reset and the programmable Watchdog Timer recover the node from supply transients and software lockups typical on long cable runs. Industrial designers favor OTP parts for field-deployed sensors because firmware bugs discovered post-deployment cannot be patched by unauthorized parties, providing a security advantage over flash MCUs in unattended installations.
おすすめ
Low-End Motor Control Loops
The PIC16C770-E/SS drives small brushed DC and unipolar stepper motors in low-power control loops such as valve actuators and small fan controllers. Its 16-bit timer provides the PWM period base, while the 12-bit ADC closes the speed or position feedback loop by reading back-EMF or Hall-effect sensor signals. The two on-chip analog comparators offer hardware over-current protection that trips faster than ADC-based software checks, important when driving inductive loads. The 20 MHz instruction rate executes a PID tick in approximately 50 microseconds, sufficient for sub-kHz control loops. The 5 V supply range simplifies integration with traditional analog driver stages, and the extended temperature grade supports fan-hub and under-hood operating environments.
おすすめ
Embedded Control Boards with USART Link
The PIC16C770-E/SS serves as a sub-controller on multi-board industrial systems where a host MCU delegates I/O expansion and analog sampling. Its USART links to the host controller via RS-232 or RS-485 transceivers, while the 16 I/O lines and 12-bit ADC handle local keypad scanning, LCD multiplexing, and analog signal acquisition. The 256-byte RAM is sufficient for a 64-byte command queue plus local scratch buffers, and the 35 single-word instruction set keeps firmware compact within the 3.5 KB OTP. The -E temperature grade supports cabinet-mounted equipment, and the 20-SSOP package offers a smaller footprint than 20-DIP variants for high-density PCB designs.
おすすめ
Analog Front-End and Comparator-Based Designs
Engineers use the PIC16C770-E/SS in designs that rely heavily on its two analog comparators and 12-bit ADC for sensor threshold detection and waveform analysis. The comparators can generate hardware interrupts on threshold crossings, offloading the CPU from software polling in battery-monitoring or window-comparator applications. The 3.5 KB OTP holds compact threshold tables and hysteresis logic without a flash memory cost premium. The Watchdog Timer and Brown-out Reset ensure recovery from comparator-induced interrupts or supply glitches, making the part well-suited for unattended monitoring nodes. The 5 V Vdd range matches typical analog sensor supplies, simplifying mixed-signal board design.
おすすめ
HVAC and Building Automation
In HVAC damper actuators, thermostats, and building-automation peripherals, the PIC16C770-E/SS controls analog outputs, reads temperature and humidity sensors, and communicates over low-speed serial links. The 12-bit ADC digitizes thermistor and ratiometric sensor outputs with sub-1 C resolution when paired with a 10K NTC. The two analog comparators detect supply undervoltage and zero-crossing of the AC mains for triac-fired heater control. The 16 I/O pins directly drive seven-segment displays, keypads, and triac optocouplers. The extended -40C to +125C operating range covers rooftop and basement HVAC enclosures, and the OTP architecture ensures firmware cannot be altered by unauthorized field technicians, providing IP protection for OEMs.
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: PIC16C770-E/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 | PIC16C770-I/SS | PIC16C770T-E/SS | PIC16C73B-20/SS | PIC16C711-04/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (5.30 mm) | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 4 KB OTP | 1.75 KB OTP |
| Max Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 4 MHz |
| Temperature Grade | -40C to +125C (E) | -40C to +85C (I) | -40C to +125C (E) | -40C to +85C (I) | -40C to +85C (I) |
| ADC | 12-bit, 8 channels | 12-bit, 8 channels | 12-bit, 8 channels | 8-bit, 8 channels | 8-bit, 4 channels |
| USART | 1 (async) | 1 (async) | 1 (async) | 1 (async) | 0 (none) |
主な差別化要因
- Extended -40C to +125C operating range in 20-SSOP （vs PIC16C770-I/SS)
- Higher 12-bit ADC resolution vs 8-bit legacy siblings （vs PIC16C711-04/SS)
- On-chip USART for serial communications （vs PIC16C711-04/SS)
設計ノート
PIC16C770-E/SS uses OTP program memory - once programmed, the firmware cannot be modified. Prototype and validate the complete firmware on a flash-based sibling such as the PIC16F77, which shares the same peripheral set, instruction set and pinout, before committing to OTP production units. A single bug discovered post-programming requires scrapping all parts. Maintain a signed firmware image archive for traceability across production lots.
Operating voltage range is 4.0 V to 6.0 V at 20 MHz; below 4.0 V the oscillator must be derated. Place a 100 nF decoupling capacitor as close as possible to pin 20 (VDD) and a bulk 10 uF tantalum or ceramic capacitor near the VDD pin for transient load support. Brown-out Reset (BOR) should be enabled in the configuration word to prevent code execution at unsafe voltage levels. For sensor or analog applications, place a 10 uF capacitor on the AVdd/VREF pin and tie unused analog inputs to Vss to minimize ADC conversion noise.
The 20-SSOP package has a 0.65 mm pitch and 5.30 mm body width - keep-out zones beneath the IC should be free of vias and signal traces to prevent solder joint stress. Route the oscillator traces (OSC1/OSC2) short and shielded with a ground guard trace to reduce EMI pickup. Maintain a continuous ground plane on the top or second layer directly under the MCU for thermal spreading and return-current continuity. The MCLR pin requires a 10 kohm pull-up to VDD; if ICSP programming is required in production, add the standard 10 kohm / diode / capacitor ICSP circuit.
Estimated: at 5 V VDD, 20 MHz oscillator and full I/O switching, the typical supply current is approximately 16 mA, dissipating about 80 mW at room temperature. The 20-SSOP package has theta-JA of approximately 100 C/W on a standard JEDEC 4-layer test PCB, giving a junction rise of 8 C above ambient at typical operating current - well within the 125 C ceiling. For enclosed or non-standard PCB stack-ups, verify thermal performance against the manufacturer's thermal characterization.
コンプライアンス情報
RoHS, REACH, lead-free and halogen-free status not explicitly stated in verified distributor data - manufacturer Microchip product page should be consulted. PIC16C family is not AEC-Q100 qualified, so not suitable for automotive under-hood applications. Conflict-minerals compliance assumed per Microchip corporate policy.
