PIC16C56T-10I/SS - 8-Bit 10MHz OTP MCU 1.5KB | Microchip
MPN： PIC16C56T-10I/SS ✗ 停產PIC16C56T-10I/SS 概覽
An 8-bit microcontroller (MCU) is a programmable digital logic device that integrates a CPU, non-volatile program memory, working RAM, and peripheral I/O onto a single silicon die. The PIC16C5X family uses a Harvard architecture with a 12-bit-wide instruction word, delivering 2:1 code compression versus competing 8-bit MCUs in its price class. The PIC16C56 specifically is the lowest-cost member of the family, omitting the on-chip EEPROM data memory and peripheral count of higher-end siblings, making it suited to cost-sensitive, high-volume embedded control applications.
Key features include 12 I/O lines capable of sourcing/sinking up to 25mA per pin for direct LED or transistor drive, an 8-bit timer/counter with a programmable prescaler, a watchdog timer with its own on-chip RC oscillator for maximum reliability, and a power-saving SLEEP mode. The fully static CMOS design allows clock frequencies from DC to 10MHz, enabling the MCU to idle at zero current consumption. Operating voltage is 3.0V to 5.5V (5V typical), and the architecture uses a two-stage pipeline that nearly all instructions execute in a single 200ns instruction cycle at 10MHz.
Typical applications include consumer appliance control, low-end remote-control transmitters, automotive body electronics (non-safety), LED lighting controllers, sensor signal conditioning, and battery-powered devices. The 12-bit instruction width and RISC instruction set simplify assembler programming for tight code-footprint designs.
When designing with this device, ensure the OTP memory is programmed only once - code bugs cannot be field-updated. Use the PICSTART or MPLAB ICD tools for development. Add a 100nF decoupling capacitor between VDD and VSS within 5mm of the pins, and reserve the MCLR pin for an external reset circuit unless internal WDT reset is acceptable.
直接替換替代品，適用於 PIC16C56T-10I/SS — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16C56T-10I/SS （相同外形與佔位） — 差異在於 Program Memory Type, Operating Temperature, Package, I/O Pins, Core Architecture.
PIC16C56T-10/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16C56-10I/SS
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16C56T-10E/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56AT-20I/SS
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16F57-I/SS
✅ 直接替換聯絡詢價
查看資料表 →PIC16C56T-10I/SS 最大額定值與電氣特性
| Core Architecture | PIC 8-bit RISC (Harvard) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 1.5 KB (1K x 12) |
| RAM | 25 bytes |
| Data EEPROM | Not present |
| Maximum CPU Frequency | 10 MHz |
| Instruction Cycle | 200 ns (at 10 MHz) |
| Instruction Width | 12 bits |
| I/O Pins | 12 |
| I/O Sink/Source Current | 25 mA per pin |
| Timers | 1 x 8-bit (with programmable prescaler) |
| Watchdog Timer | Yes (with dedicated on-chip RC oscillator) |
| Operating Voltage | 3.0 V to 5.5 V (5 V typical) |
| 工作溫度 | -40 C to +85 C (industrial, 'I' suffix) |
| 封裝 | 20-pin SSOP (5.30 mm body width) |
| 安裝類型 | Surface Mount |
PIC16C56T-10I/SS 腳位配置
| 腳位 1 | RA0 — Port A bit 0 (digital I/O) |
| 腳位 2 | RA1 — Port A bit 1 (digital I/O) |
| 腳位 3 | RA2 — Port A bit 2 (digital I/O) |
| 腳位 4 | RA3 — Port A bit 3 (digital I/O) |
| 腳位 5 | RC0 — Port C bit 0 (digital I/O) |
| 腳位 6 | RC1 — Port C bit 1 (digital I/O) |
| 腳位 7 | RC2 — Port C bit 2 (digital I/O) |
| 腳位 8 | RC3 — Port C bit 3 (digital I/O) |
| 腳位 9 | RC4 — Port C bit 4 (digital I/O) |
| 腳位 10 | RC5/MCLR — Port C bit 5 / Master Clear (external reset) |
| 腳位 11 | VSS — Ground reference |
| 腳位 12 | OSC1/CLKIN — Oscillator input / external clock in |
| 腳位 13 | OSC2/CLKOUT — Oscillator output / clock out |
| 腳位 14 | RB0 — Port B bit 0 (digital I/O) |
| 腳位 15 | RB1 — Port B bit 1 (digital I/O) |
| 腳位 16 | RB2 — Port B bit 2 (digital I/O) |
| 腳位 17 | RB3 — Port B bit 3 (digital I/O) |
| 腳位 18 | RB4 — Port B bit 4 (digital I/O) |
| 腳位 19 | RB5 — Port B bit 5 (digital I/O) |
| 腳位 20 | VDD — Positive supply voltage |
典型應用
PIC16C56T-10I/SS 適用於 6 應用s: Consumer Appliance Control, Remote Control Transmitter, LED Lighting Controller, Sensor Signal Conditioning, Automotive Body Electronics (Non-Safety), Battery-Powered Devices.
Consumer Appliance Control
The PIC16C56T-10I/SS fits low-end consumer appliance controllers (toaster ovens, coffee makers, basic washing machine timers) because its 1.5 KB OTP program memory is sufficient for fixed-sequence state machines, 12 GPIO pins drive relays and LED indicators directly, and the 10 MHz CPU executes 5 MIPS enabling responsive button-debounce and timing logic. The 25 mA per-pin sink capability eliminates driver transistors for indicator LEDs, BOM cost optimization.
推薦
Remote Control Transmitter
Battery-powered RF/IR remote controls benefit from the PIC16C56T-10I/SS ultra-low SLEEP current and 10 MHz throughput. The 12 GPIO pins handle keypad scanning (4x4 matrix needs 8 lines) and PWM-style modulation output for IR LEDs or RF transmitters. OTP memory locks firmware to prevent cloning, and the 200 ns instruction cycle allows precise timing of carrier bursts at 38 kHz without requiring dedicated hardware.
推薦
LED Lighting Controller
Addressable LED strip controllers, decorative lighting sequencers, and RGB color-mixing fixtures leverage the PIC16C56T-10I/SS 25 mA GPIO sink current and 10 MHz CPU. Software PWM at 10 MHz achieves 8-bit dimming resolution at refresh rates above 100 Hz with no flicker. The 12 GPIO pins control three LED channels plus a serial interface, while the OTP program memory locks the color sequence to prevent field tampering.
推薦
Sensor Signal Conditioning
Low-speed analog sensor conditioning boards use the PIC16C56T-10I/SS for thermistor/NTC temperature logging, simple threshold alarms, and 1-Wire or I2C-style bit-banging to upstream MCUs. The 10 MHz CPU executes sigma-delta or dual-slope ADC algorithms in software, and 12 GPIO pins handle keypad/display interfaces. The OTP memory locks the calibration coefficients to prevent field calibration drift.
推薦
Automotive Body Electronics (Non-Safety)
The PIC16C56T-10I/SS industrial -40C to +85C temperature range suits non-safety automotive body modules such as window switches, mirror adjusters, and lighting controllers. Its 25 mA GPIO drives relays directly, and the watchdog timer detects firmware runaway. For AEC-Q100 qualified applications, the PIC16C56T-10E/SS extended-temp variant is the correct alternative, not the industrial 'I' grade.
推薦
Battery-Powered Devices
Battery-operated devices (e.g., electronic door locks, simple toys, low-end metering) leverage the PIC16C56T-10I/SS fully static CMOS design and sub-microamp SLEEP current. The PIC16C5X supports clock frequencies down to DC, allowing the MCU to wake on an external interrupt, run the timing sequence, and return to sleep without an external RTC. OTP locks firmware to lock out field reprogramming - an anti-tamper feature for metering.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16C56T-10I/SS — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16C56T-10/SS | PIC16C56-10I/SS | PIC16C56T-10E/SS | PIC16C56AT-20I/SS | PIC16F57-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP (5.30 mm) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) | 20-SSOP (same) |
| Program Memory | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 1.5 KB OTP | 3 KB Flash (reprogrammable) |
| RAM | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 25 bytes | 72 bytes |
| Maximum CPU Frequency | 10 MHz | 10 MHz | 10 MHz | 10 MHz | 20 MHz | 10 MHz |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 20 |
| Operating Temperature | -40 C to +85 C (industrial) | 0 C to +70 C (commercial) | -40 C to +85 C (industrial) | -40 C to +125 C (extended) | -40 C to +85 C (industrial) | -40 C to +85 C (industrial) |
| Memory Reprogrammability | No (OTP) | No (OTP) | No (OTP) | No (OTP) | No (OTP) | Yes (Flash) |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
主要差異化特點
- Industrial -40C to +85C operating temperature range (對比PIC16C56T-10/SS (commercial 0-70C variant))
- Tape-and-reel packaging for high-volume assembly (對比PIC16C56-10I/SS (tube packaging))
- Drop-in compatibility with Flash-based PIC16F57-I/SS (對比Obsolete OTP PIC16C56 vs active PIC16F57)
設計說明
Decouple VDD (pin 20) and VSS (pin 11) with a 100 nF ceramic capacitor placed within 5 mm of the package pins. The PIC16C5X core draws brief current spikes on each instruction cycle; without local decoupling, these spikes couple into the supply rail and may cause brownouts or erratic behavior. For battery applications, add a 10 uF bulk capacitor near the IC to handle oscillator startup transients.
OTP memory can be programmed exactly once - there is no way to clear or re-program it. A bug in the firmware that is locked into OTP results in a non-functional product that cannot be recovered. Always qualify firmware on a PIC16F-series or windowed UV-erasable PIC16C-series equivalent first (e.g., PIC16F84 or PIC16C56JW), then port the validated firmware to the OTP PIC16C56 for production.
Keep the MCLR pin (pin 10) trace short, and add a 10 kohm pull-up to VDD plus a 100 nF capacitor to VSS for a slow-rise external reset circuit. The on-chip watchdog timer with its own RC oscillator will reset the MCU if firmware crashes, but a properly debounced external reset is required for power-on brown-out conditions. Place the crystal or resonator within 5 mm of OSC1/OSC2 (pins 12-13).
Estimated: at 10 MHz oscillator with a 20 pF load crystal, trace capacitance between OSC1/OSC2 and the crystal should be kept below 5 pF for reliable startup. If using an external clock source on OSC1, leave OSC2 floating - do not load it with anything but the standard test-circuit capacitance. The PIC16C5X is sensitive to long oscillator traces that pick up EMI in industrial environments.
合規資訊
The 'T' suffix denotes Tape-and-Reel packaging, not lead-free status. PIC16C5X family parts were originally launched in the 1990s, before RoHS was mandatory - exact RoHS/lead-free status must be confirmed with the specific distributor lot. The 'E' suffix variant (PIC16C56T-10E/SS) is also not AEC-Q100 qualified; for AEC-Q100, migrate to a different family such as PIC16F876A or dsPIC33.