PIC16C62BT-20/SO - 8-Bit OTP MCU 3.5KB 20MHz SOIC-28 | Microchip
MPN: PIC16C62BT-20/SO ✗ انتهى عمره الإنتاجيPIC16C62BT-20/SO نظرة عامة
What is an OTP microcontroller? An OTP MCU (One-Time-Programmable Microcontroller) is a microcontroller whose program memory is implemented as EPROM (Erasable PROM) that is programmable exactly once in production or in the field via a high-voltage programmer, after which the bit pattern is permanent. OTP MCUs occupy a middle ground between mask-ROM MCUs (cheapest, but require factory commitment) and flash MCUs (re-programmable in-circuit). They are widely used in cost-sensitive high-volume consumer products where the firmware is final, the bill of materials dominates the unit cost, and re-programmability is unnecessary.
Key features of the PIC16C62BT-20/SO include: 35 instructions, a 14-bit instruction word, 8-bit data path, 8-level deep hardware stack, 4 oscillator options (RC, LP, XT, HS), integrated power-on reset, watchdog timer with on-chip RC oscillator, brown-out reset, programmable code protection, and a wide operating voltage range of 2.5 V to 5.5 V (commercial grade). The PIC16C6x core implements a Harvard architecture with separate program and data buses, enabling single-cycle instruction execution except for program branches.
Typical applications include industrial control logic, appliance controllers, automotive body electronics (non-safety subsystems), HVAC controls, security alarm panels, smart card readers, remote-control transmitters, and battery chargers. The 22 I/O pins support direct interfacing to keypads, LED displays, character LCDs, and serial EEPROMs via I2C bit-banging or hardware USART.
When designing with this part, note that OTP memory cannot be re-programmed in-circuit; firmware must be verified in a flash-based equivalent (e.g., PIC16F62x) before committing to the C-variant. The 28-SOIC package requires a 1.27 mm pitch footprint and supports hand-soldering as well as reflow processes.
This page synthesizes distributor pricing, drop-in PIC16C6x family alternatives, and practical design notes not found in the manufacturer datasheet alone.
بدائل مباشرة لـ PIC16C62BT-20/SO — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PIC16C62BT-20/SO (نفس عامل الشكل والبصمة) — يختلف في Program Memory Type, Operating Temperature Range, Package, Timers, Program Memory Size.
PIC16C62B-20I/SO
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
PIC16C62B-20E/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C62B-20/SO
✅ بديل مباشر ⚠️ مواصفات غير مُتحقق منهاتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C62BT-20I/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C62BT-20E/SO
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PIC16C62BT-20/SO الحدود القصوى والخصائص الكهربائية
| Product Family | PIC16C6x |
| Core Architecture | 8-bit RISC Harvard |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 3.5 KB (2K x 14 words) |
| RAM | 128 bytes |
| EEPROM Data Memory | None |
| Maximum CPU Frequency | 20 MHz |
| Instruction Set | 35 instructions, 14-bit word |
| I/O Pins | 22 |
| Operating Voltage Range | 2.5 V to 5.5 V |
| نطاق درجة حرارة التشغيل | 0 C to +70 C (Commercial) |
| العلبة | 28-SOIC (7.50 mm body width) |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
| AEC-Q100 Automotive | Not qualified |
تكوين أطراف PIC16C62BT-20/SO
| دبوس 1 | MCLR/Vpp — Master Clear (active-low reset) / programming voltage input |
| دبوس 2 | RA0/AN0 — Port A bit 0 / analog input 0 |
| دبوس 3 | RA1/AN1 — Port A bit 1 / analog input 1 |
| دبوس 4 | RA2/AN2 — Port A bit 2 / analog input 2 |
| دبوس 5 | RA3/AN3/VREF — Port A bit 3 / analog input 3 / voltage reference |
| دبوس 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| دبوس 7 | RA5/SS/AN4 — Port A bit 5 / slave select / analog input 4 |
| دبوس 8 | OSC1/CLKIN — Oscillator input / external clock input |
| دبوس 9 | OSC2/CLKOUT — Oscillator output / clock out |
| دبوس 10 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| دبوس 11 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 |
| دبوس 12 | RC2/CCP1 — Port C bit 2 / CCP1 PWM output |
| دبوس 13 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| دبوس 14 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| دبوس 15 | RC5/SDO — Port C bit 5 / SPI data out |
| دبوس 16 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| دبوس 17 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| دبوس 18 | VSS — Ground reference |
| دبوس 19 | VDD — Positive supply (2.5 V to 5.5 V) |
| دبوس 20 | RB0/INT — Port B bit 0 / external interrupt |
| دبوس 21 | RB1 — Port B bit 1 |
| دبوس 22 | RB2 — Port B bit 2 |
| دبوس 23 | RB3/PGM — Port B bit 3 / low-voltage programming |
| دبوس 24 | RB4 — Port B bit 4 |
| دبوس 25 | RB5 — Port B bit 5 |
| دبوس 26 | RB6/PGC — Port B bit 6 / ICSP clock |
| دبوس 27 | RB7/PGD — Port B bit 7 / ICSP data |
| دبوس 28 | VSS — Ground reference (second VSS pin for noise immunity) |
التطبيقات النموذجية
PIC16C62BT-20/SO مناسب لـ 7 التطبيقs: Industrial Control Logic, Appliance Controllers (Washing Machine / Dishwasher / Microwave), Security Alarm Panels, Remote Control Transmitters (Garage Door / RF Key Fob), HVAC Thermostats and Zone Controllers, Battery Chargers and Power Tools, Smart Card and Access Control Readers.
Industrial Control Logic
The PIC16C62BT-20/SO fits industrial control logic because its 20 MHz CPU clock and 35-instruction Harvard core deliver 5 MIPS of deterministic throughput for relay sequencing, sensor polling, and PWM motor control. The 22 I/O pins directly drive optocouplers, 24 V level-shifters, and triac interfaces for solenoid valves, while the integrated watchdog timer and brown-out reset provide the fail-safe behavior required in unattended equipment. The 28-SOIC footprint reflow-solders onto standard 1.27 mm-pitch control boards.
موصى به
Appliance Controllers (Washing Machine / Dishwasher / Microwave)
The PIC16C62BT-20/SO is well-suited for major appliance controllers where its 3.5 KB OTP program memory holds the fixed state machine for motor, pump, and heater sequencing, and its 2.5 V to 5.5 V supply tolerance accommodates rectified 5 V rails common in white goods. The 22 I/O lines drive keypad matrices, 7-segment or character LCD displays, and rotary encoder inputs. OTP memory is preferred in this market because production firmware rarely changes after qualification, and the cost advantage of EPROM over flash materially impacts BOM at million-unit volumes.
موصى به
Security Alarm Panels
The PIC16C62BT-20/SO works in security alarm panels because its hardware USART (TX/RX on RC6/RC7) communicates with GSM modems and central-station dialers, while its 8-bit Timer1 module captures precise interval timing for entry/exit delay logic. The integrated watchdog timer detects firmware lockup conditions that could otherwise disable the alarm, and the brown-out reset prevents false triggering during AC mains brown-outs. The OTP memory prevents end-user code modification, satisfying tamper-resistance requirements common in alarm-system certifications.
موصى به
Remote Control Transmitters (Garage Door / RF Key Fob)
The PIC16C62BT-20/SO is appropriate for RF remote-control transmitters because its low-power CMOS design, 22 I/O capacity for multi-button keypads, and integrated Timer0 capture module enable precise rolling-code or fixed-code transmission protocols (KeeLoq, etc.). The 20 MHz instruction rate produces tight timing for Manchester or PWM modulation of 315/433/868 MHz SAW-transmitter outputs. The OTP cell secures the encryption key against bit-stream probing attacks, a security property valued in access-control applications.
موصى به
HVAC Thermostats and Zone Controllers
The PIC16C62BT-20/SO fits HVAC thermostats because its 22 I/O lines handle thermistor bridges, setpoint rotary encoders, 7-day programming keypads, relay drivers for fan/heat/cool stages, and serial EEPROMs storing schedule data. The internal 8 MHz RC oscillator option (LP/XT/HS selectable) lets the designer trade accuracy for current consumption, important in battery-backed thermostats. The wide 2.5 V to 5.5 V range supports both 3.3 V lithium and 5 V mains-derived rails common in HVAC electronics.
موصى به
Battery Chargers and Power Tools
The PIC16C62BT-20/SO suits smart battery chargers and cordless power-tool controllers because its CCP (Capture/Compare/PWM) module generates the high-resolution PWM signals required for current-mode battery charging profiles (CC-CV for Li-ion, pulsed for NiMH). The 20 MHz CPU executes the charge algorithm with deterministic timing, while 22 I/O pins monitor cell voltage dividers, thermistor sensors, and LED status indicators. OTP memory locks in the chemistry-specific firmware (Li-ion vs NiMH vs lead-acid) without risk of accidental firmware corruption in the field.
موصى به
Smart Card and Access Control Readers
The PIC16C62BT-20/SO is widely deployed in smart card readers and door-access controllers because its USART and I/O pins support both legacy Wiegand and modern OSDP reader protocols. The 3.5 KB OTP memory holds the credential database and authentication handshake logic, and the on-chip hardware AES-friendly instruction set enables acceptable symmetric-cipher throughput. The integrated watchdog timer prevents the reader from hanging in mid-authentication, a critical security property for unattended access-control installations.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16C62BT-20/SO — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16C62B-20I/SO | PIC16C62B-20E/SO | PIC16C62B-20/SO | PIC16C62BT-20I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same | 28-SOIC - same |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP |
| Maximum CPU Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| RAM | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| I/O Pins | 22 | 22 | 22 | 22 | 22 |
| Operating Temperature | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) |
| Supply Voltage | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V | 2.5 V to 5.5 V |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete |
أبرز الفروقات
- Commercial temperature grade optimized for indoor appliance/consumer use (مقابلPIC16C62B-20I/SO)
- Tape-and-reel packaging for high-volume SMT assembly lines (مقابلPIC16C62B-20/SO)
- Same B-revision silicon and pinout as the entire PIC16C62B-20x family (مقابلPIC16C62A-04/SO)
ملاحظات التصميم
The 28-SOIC (7.50 mm body) package uses a 1.27 mm pin pitch and reflow-solders on standard FR-4 with no thermal pad; thermal dissipation is limited to PCB copper pour. Place a 100 nF decoupling capacitor within 5 mm of the VDD pin (pin 19), plus a 10 uF bulk capacitor on the same rail. The second VSS pin (pin 28) should be tied directly to the ground plane with a short trace or via to reduce digital switching noise on analog measurements via AN0-AN4. Estimated: at 20 MHz CPU and 5 V supply, typical core current is 10 mA, so 0.05 W of dissipation does not require an explicit thermal relief pattern.
OTP EPROM cells cannot be erased by software or UV light - any firmware bug becomes a permanently defective MCU. Always prototype with the flash-based PIC16F62x equivalent in the same 28-SOIC pinout (PIC16F628, PIC16F627A) before committing to the OTP PIC16C62B for production. The programming voltage Vpp on the MCLR/Vpp pin must reach 13 V nominal during device programming; ensure your programmer supports the 13 V Vpp specification, not just the 5 V low-voltage programming used by flash parts. Brown-out-reset trip voltage should be configured for the actual minimum VDD expected in the application (typically 3.0 V for 3.3 V systems).
Estimated: at 20 MHz CPU and 5 V supply, the PIC16C62B draws approximately 10 mA active current; at 32 kHz LP oscillator mode the same part drops below 100 uA. For battery-backed applications (e.g., thermostats, security keypads) use the SLEEP instruction with the watchdog timer disabled to enter a sub-100 nA sleep state, and wake on the RB0/INT external interrupt or the watchdog timeout. The brown-out reset circuitry must be configured to a trip voltage above the minimum VDD at which the oscillator remains stable - otherwise the part will wake into an undefined state with corrupt RAM.
The 28-SOIC package has no integrated ground or power plane below the die; high-speed digital outputs on port C (RC3-RC7) can couple noise into adjacent analog inputs on port A (RA0-RA3). Route the analog traces on the opposite side of the PCB from the digital switching traces, with a ground pour between them. The OSC1/OSC2 pins should be kept short and surrounded by ground pour, particularly when using the high-frequency HS oscillator mode (>4 MHz). The MCLR pin requires a 10 kohm pull-up to VDD plus a 100 nF capacitor to ground to suppress ESD-induced reset events.
معلومات الامتثال
RoHS compliance per Microchip product declaration. AEC-Q100 not qualified - choose PIC16C62B-20E/SO for automotive-grade applications. REACH and halogen-free status not explicitly published; consult Microchip for current declarations.
