PIC16C56T-10I/SO - 8-Bit 10MHz OTP MCU 1.5KB | Microchip
MPN: PIC16C56T-10I/SO ✓ Hoạt độngPIC16C56T-10I/SO Tóm tắt
An 8-bit microcontroller (MCU) is a small, self-contained computer-on-a-chip that combines a CPU, program memory, RAM, and peripherals onto a single integrated circuit. The PIC16C5X family belongs to Microchip's foundational PIC architecture — a Harvard-type RISC design in which program and data memory are accessed on separate buses — that achieves roughly 2:1 code compression over competitive 8-bit CISC MCUs of its era thanks to its 12-bit wide, highly symmetrical instruction set. This positions the PIC16C56 as a low-cost, high-performance member of the linear regulator -> power management hierarchy of legacy embedded control.
Key specifications include a 10 MHz external oscillator input, an 8-bit ALU, two 8-bit I/O ports, a 12-bit instruction word, single-word instructions with single-cycle execution (except branches), a watchdog timer with on-chip RC oscillator, and an internal power-on reset circuit. The device supports industrial temperature operation (-40C to +85C) as indicated by the 'I' suffix and is supplied in tape and reel packaging as indicated by the 'T' suffix.
The PIC16C5X architecture uses a simple two-stage pipeline with a 12-bit program memory bus and an 8-bit data bus, allowing most instructions to execute in a single 200 ns instruction cycle at 20 MHz (400 ns at 10 MHz). The OTP program memory is programmed once via standard Microchip device programmers and cannot be erased — a deliberate cost trade-off that suits mature, fixed-function designs rather than prototyping.
Typical applications include simple logic replacement, low-end consumer appliances, automotive subsystems (climate control, lighting, instrument clusters), industrial timers and counters, battery chargers, and remote controls. Designers migrating from 8051-family MCUs value the PIC16C5X instruction set for its orthogonal, easy-to-learn assembly language and the broad ecosystem of MPLAB development tools.
A key design consideration is OTP program memory: once a device is programmed, the firmware is permanent and cannot be field-updated. For designs that require firmware revisions, the PIC16F5X flash-based family is a drop-in architectural alternative. Engineers should also budget for an external oscillator or resonator in XT mode, as the device does not include an internal high-frequency oscillator.
This page synthesizes distributor pricing, same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho PIC16C56T-10I/SO — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16C56T-10I/SO (cùng hình factor và footprint) — khác nhau ở Core Architecture, Operating Temperature, Package, Program Memory Type, Mounting Type.
PIC16C56T-10/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C56T-10E/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C55T-10I/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16C56T-10I/SS
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →PIC16C56-RCI/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C56T-10I/SO Tỷ lệ tối đa & tính chất điện
| Core | 8-bit PIC16C5X RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM Size | 25 x 8 bytes |
| Maximum CPU Speed | 10 MHz |
| Instruction Word Width | 12 bits |
| I/O Pins | 12 (Ports A and B) |
| Timers | 1 x 8-bit with prescaler (TMR0) |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Oscillator Modes | RC, XT, HS, LP (external) |
| Hộp | 18-SOIC (SO, 7.50 mm body) |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Kiểu lắp đặt | Surface Mount (Gull-Wing) |
| Trạng thái RoHS | Compliant (per Besenchips listing) |
| Programming Method | ICSP (In-Circuit Serial Programming) |
Cấu hình chân PIC16C56T-10I/SO
| Chân 1 | MCLR — Master Clear (reset) input, active low |
| Chân 2 | RA0 — PORTA bit 0 (digital I/O) |
| Chân 3 | RA1 — PORTA bit 1 (digital I/O) |
| Chân 4 | RA2 — PORTA bit 2 (digital I/O) |
| Chân 5 | RA3 — PORTA bit 3 (digital I/O) |
| Chân 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Chân 7 | GND — Ground reference |
| Chân 8 | OSC1 — Oscillator input (XT/HS/LP/RC mode) |
| Chân 9 | OSC2 — Oscillator output / CLKOUT |
| Chân 10 | RB0/INT — PORTB bit 0 / External interrupt |
| Chân 11 | RB1 — PORTB bit 1 (digital I/O) |
| Chân 12 | RB2 — PORTB bit 2 (digital I/O) |
| Chân 13 | RB3 — PORTB bit 3 (digital I/O) |
| Chân 14 | RB4 — PORTB bit 4 (digital I/O) |
| Chân 15 | RB5 — PORTB bit 5 (digital I/O) |
| Chân 16 | RB6 — PORTB bit 6 (digital I/O) |
| Chân 17 | RB7 — PORTB bit 7 (digital I/O) |
| Chân 18 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC16C56T-10I/SO phù hợp cho 6 Áp dụngs: Low-End Consumer Appliance Control, Automotive Interior Lighting and Switch Module, Industrial Timer and Counter Front-End, Remote Control Transmitter Encoder, Simple Logic-Replacement MCU Board, Battery Charger State-Machine Controller.
Low-End Consumer Appliance Control
The PIC16C56T-10I/SO fits low-end consumer appliance control because its 8-bit PIC16C5X core with 1.5 KB OTP and 25 bytes RAM is sized for fixed-function tasks like washing-machine cycle timing, microwave relay sequencing, and toaster-oven user-interface scanning. Its 10 MHz CPU executes single-cycle instructions in 400 ns, sufficient for keypad debouncing, LED multiplexing, and triac zero-crossing control in mains appliances. The industrial -40C to +85C temperature grade supports kitchen and laundry environments. Using PIC OTP rather than flash eliminates firmware tampering risk and reduces per-unit cost in high-volume SKUs.
Được đề xuất
Automotive Interior Lighting and Switch Module
The PIC16C56T-10I/SO is well matched to automotive interior lighting and switch modules where the controller reads push-button and rotary inputs and drives LED strings through low-side MOSFETs. Its 12 I/O pins cover a 5-button plus 4-LED matrix with one pin to spare for a CAN-ready wake signal, and the 10 MHz CPU supports 10 ms debounce and 100 Hz PWM dimming in software. The industrial -40C to +85C range covers cabin environments; for under-hood or exterior applications the PIC16C56T-10E/SO extended-temp variant should be substituted. OTP memory locks the firmware against warranty-fraud reflashing while the 1.5 KB code space comfortably fits the typical 600-800 instruction module.
Được đề xuất
Industrial Timer and Counter Front-End
The PIC16C56T-10I/SO serves as a programmable industrial timer and counter front-end, capturing pulses from a Hall-effect sensor or opto-isolated input and presenting the count on a multiplexed 7-segment display. The TMR0 8-bit timer with prescaler handles pulse widths down to 400 ns at 10 MHz CPU clock, while the watchdog timer with on-chip RC oscillator ensures the system recovers from EMI-induced lockups common in motor cabinets. Its 25 bytes RAM holds the current count, setpoint, and state machine flags for typical batch-counting firmware. Industrial -40C to +85C operation tolerates factory-floor temperatures.
Được đề xuất
Remote Control Transmitter Encoder
The PIC16C56T-10I/SO encodes infrared or sub-GHz remote-control commands in consumer A/V and IoT bridge applications, generating precise carrier bursts and Manchester-encoded data frames from its 10 MHz instruction cycle. The 12-bit instruction word produces compact state-machine code that fits the 1.5 KB OTP budget with room for multiple protocol profiles. PIC16C5X low-power LP oscillator mode with a 32.768 kHz watch crystal enables multi-year battery life when the transmitter is idle, while the 12 I/O pins handle matrix-scanned keypads up to 4x4. OTP prevents reverse-engineering of proprietary IR protocols.
Được đề xuất
Simple Logic-Replacement MCU Board
The PIC16C56T-10I/SO replaces legacy 7400-series glue logic in retrofit boards where conditional sequencing, timing delays, or input-to-output mapping exceeds what discrete gates can do economically. The 12 I/O pins plus 1.5 KB OTP let one PIC16C56 replace 4-6 logic ICs (counters, decoders, monostables) on a board, reducing BOM and assembly cost. Its 10 MHz CPU supports 100 ns-edge timing critical for legacy bus interfaces, and the industrial temperature grade suits factory-floor retrofit installations. The PIC16C5X instruction set is simple enough that the original 7400-logic schematic can be transcribed into 200-300 PIC instructions for direct behavioral equivalence.
Được đề xuất
Battery Charger State-Machine Controller
The PIC16C56T-10I/SO implements a NiCd/NiMH or small Li-ion charger state machine by sampling battery voltage and temperature via the 8-bit ADC-less comparator inputs and controlling a constant-current source through PWM on RB4-RB7. The TMR0 with watchdog provides safety timing for charge-cycle termination, and the 1.5 KB OTP holds the charge-profile curve for several cell chemistries selected via a jumper. With LP oscillator mode drawing under 1 mA active, the MCU itself contributes negligibly to the charger quiescent drain. Industrial temperature grade supports garage and workshop charging environments.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C56T-10I/SO — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16C56T-10/SO | PIC16C56T-10E/SO | PIC16C55T-10I/SO | PIC16C56-RCI/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) | 18-SOIC (same) |
| Core Architecture | PIC16C5X 12-bit | PIC16C5X 12-bit | PIC16C5X 12-bit | PIC16C5X 12-bit | PIC16C5X 12-bit |
| Program Memory | 1.5 KB (1K x 12) OTP | 1.5 KB (1K x 12) OTP | 1.5 KB (1K x 12) OTP | 0.75 KB (512 x 12) OTP | 1.5 KB (1K x 12) OTP |
| RAM Size | 25 x 8 bytes | 25 x 8 bytes | 25 x 8 bytes | 25 x 8 bytes | 25 x 8 bytes |
| Max CPU Speed | 10 MHz | 10 MHz | 10 MHz | 10 MHz | ~4 MHz RC |
| Operating Temperature | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Extended) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 |
Bảo phân biệt quan trọng
- Industrial -40C to +85C temperature grade with same 18-SOIC footprint as commercial-temp PIC16C56T-10/SO (vsPIC16C56T-10/SO)
- Same 18-SOIC footprint as PIC16C55T-10I/SO with double the program memory (vsPIC16C55T-10I/SO)
- Higher 10 MHz maximum CPU clock versus RC-mode ~4 MHz on PIC16C56-RCI/SO (vsPIC16C56-RCI/SO)
Ghi chú thiết kế
Estimated: at 10 MHz CPU clock and VDD=5V the PIC16C56T-10I/SO draws approximately 5-10 mA active. Add a 100 nF ceramic decoupling capacitor as close as practical to the VDD pin (pin 18) and a 10 uF bulk capacitor at the board's power-entry point. For battery applications, drop to LP oscillator mode with a 32.768 kHz crystal to reduce active current below 1 mA; ensure the MCLR pull-up resistor (typically 10 kohm) does not exceed the leakage budget.
Route the oscillator traces (OSC1/OSC2, pins 8-9) as short as possible and keep them away from high-current switching traces to reduce EMI injection. For XT or HS modes, place the load capacitors within 3-5 mm of the oscillator pins and ground both capacitor grounds to a single via to minimize stray inductance. The MCLR pin (pin 1) requires a 10 kohm pull-up to VDD; if in-circuit programming is needed, add the standard ICSP header (VDD, GND, RB6, RB7, MCLR) per Microchip development guidelines.
Three pitfalls recur in PIC16C56 designs: (1) confusing PIC16C5X (12-bit core, this part) with PIC16F5X or PIC16C6X/7X (14-bit core) - they share package footprints but NOT instruction sets; attempting to program a PIC16C56 with PIC16F54 hex code will fail. (2) Forgetting that OTP memory cannot be erased - any code-protection lock bit set will permanently prevent verification of the original firmware. (3) Assuming the internal RC oscillator is available - the PIC16C5X requires an external RC/XT/HS/LP oscillator; only the watchdog has an internal RC source.
Thông tin tuân thủ
RoHS compliance confirmed per Besenchips and Partstack distributor listings (accessed 2026-09-16). REACH, halogen-free, and conflict-minerals declarations should be obtained from Microchip's most recent material declaration; AEC-Q100 is not relevant for this non-automotive-grade part.
