PIC16LC63AT-04/SS - 8-Bit 4MHz OTP MCU 7KB | Microchip
MPN: PIC16LC63AT-04/SS ✓ نشطPIC16LC63AT-04/SS نظرة عامة
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory, data RAM, and peripheral interfaces on a single die. Within the broader semiconductor taxonomy, an MCU is a sub-class of microcomputer, which sits under microprocessor and ultimately under digital IC. The PIC16CXX family is part of Microchip's mid-range architecture and serves the same role as competing 8-bit families such as the 8051 (Intel/MCS-51 lineage) and Atmel/Microchip AVR, typically chosen for cost-sensitive embedded control where 32-bit performance is unnecessary.
Key features of the PIC16LC63AT-04/SS include integrated peripherals for robust embedded designs: Power-On Reset (POR), Brown-Out Reset (BOR), a Watchdog Timer (WDT) with its own on-chip RC oscillator, and a Pulse Width Modulation (PWM) module. The mid-range core offers 35 single-word instructions, all single-cycle except program branches (two cycles), giving deterministic interrupt latency. The on-chip peripherals reduce external component count, while the SSOP-28 footprint supports compact surface-mount PCB layouts.
The device is built on Microchip's OTP CMOS process and uses a Harvard architecture with separate program and data buses. The 4 MHz maximum clock rate at 3-5.5 V and 14-bit instruction word place this part in the mid-range performance class, balancing throughput against power consumption for battery-aware and line-powered designs alike.
Typical applications include consumer electronics, industrial automation controllers, sensor signal conditioning, low-speed motor control, simple user-interface nodes, and battery-backed instruments. The integrated WDT and BOR make it well-suited to unattended installations requiring autonomous reset behavior.
When designing with the PIC16LC63AT-04/SS, note that OTP memory cannot be re-programmed in-circuit; a flash-based sibling such as the PIC16F873A is required if field re-programmability is needed. Validate brown-out threshold settings against your worst-case supply droop to avoid spurious resets.
This page synthesizes distributor pricing, drop-in alternative MPNs from the same PIC16LC6x family, and practical design notes not collected on a single manufacturer datasheet page.
بدائل مباشرة لـ PIC16LC63AT-04/SS — 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 PIC16LC63AT-04/SS (نفس عامل الشكل والبصمة) — يختلف في Instruction Cycle, Package, ADC, Maximum Clock Frequency, Operating Temperature.
PIC16LC63A-04I/SS
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PIC16LC63AT-04I/SS
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| Core Architecture | PIC16CXX mid-range 8-bit RISC |
| Program Memory | 7 KB (4K x 14) OTP |
| Data RAM | 192 bytes |
| أقصى تردد للساعة | 4 MHz |
| Supply Voltage Range | 3 V to 5.5 V |
| Digital I/O Pins | 22 |
| Instruction Set Size | 35 single-word instructions |
| Instruction Cycle | Single-cycle (branches: 2 cycles) |
| العلبة | 28-pin SSOP |
| نوع التركيب | Surface Mount |
| نطاق درجة حرارة التشغيل | -40C to +85C (industrial) |
| نوع الذاكرة | OTP (One-Time Programmable) |
| Integrated Peripherals | POR, BOR, WDT, PWM |
| Process Technology | CMOS |
تكوين أطراف PIC16LC63AT-04/SS
| دبوس 1 | MCLR/VPP — Master clear (reset) input / programming voltage |
| دبوس 2 | RA0 — Port A bit 0 (digital I/O) |
| دبوس 3 | RA1 — Port A bit 1 (digital I/O) |
| دبوس 4 | RA2 — Port A bit 2 (digital I/O) |
| دبوس 5 | RA3 — Port A bit 3 (digital I/O) |
| دبوس 6 | RA4 — Port A bit 4 (digital I/O, open-drain on some variants) |
| دبوس 7 | RA5 — Port A bit 5 (digital I/O) |
| دبوس 8 | VSS — Ground reference |
| دبوس 9 | OSC1 — Crystal oscillator input / external clock input |
| دبوس 10 | OSC2 — Crystal oscillator output |
| دبوس 11 | RC0 — Port C bit 0 (digital I/O) |
| دبوس 12 | RC1 — Port C bit 1 (digital I/O) |
| دبوس 13 | RC2 — Port C bit 2 (digital I/O / PWM output) |
| دبوس 14 | RC3 — Port C bit 3 (digital I/O) |
| دبوس 15 | RC4 — Port C bit 4 (digital I/O) |
| دبوس 16 | RC5 — Port C bit 5 (digital I/O) |
| دبوس 17 | RC6 — Port C bit 6 (digital I/O / TX) |
| دبوس 18 | RC7 — Port C bit 7 (digital I/O / RX) |
| دبوس 19 | VSS — Ground reference |
| دبوس 20 | VDD — Positive supply voltage |
| دبوس 21 | RB0 — Port B bit 0 (digital I/O / external interrupt) |
| دبوس 22 | RB1 — Port B bit 1 (digital I/O) |
| دبوس 23 | RB2 — Port B bit 2 (digital I/O) |
| دبوس 24 | RB3 — Port B bit 3 (digital I/O) |
| دبوس 25 | RB4 — Port B bit 4 (digital I/O) |
| دبوس 26 | RB5 — Port B bit 5 (digital I/O) |
| دبوس 27 | RB6 — Port B bit 6 (digital I/O / ICSP clock) |
| دبوس 28 | RB7 — Port B bit 7 (digital I/O / ICSP data) |
التطبيقات النموذجية
PIC16LC63AT-04/SS مناسب لـ 6 التطبيقs: Consumer Electronics Control, Industrial Automation Sensor Nodes, Low-Speed DC Motor / Fan Speed Control, Battery-Powered Remote Sensor / IoT Edge Node, User Interface / Keypad and LED Driver, Automotive Body / Comfort Electronics (Sub-System).
Consumer Electronics Control
The PIC16LC63AT-04/SS suits consumer-electronics control boards where 22 digital I/O lines, 7 KB of OTP firmware, and integrated PWM are sufficient to drive user-interface logic, indicator LEDs, and small actuators. Its 4 MHz core over 3-5.5 V matches battery and USB-powered rails. Compared to discrete logic or an FPGA, it cuts BOM cost while delivering deterministic interrupt response (single-cycle instructions, 250 ns at 4 MHz). The integrated WDT and BOR protect against firmware lockup in unattended appliances such as coffee makers, air purifiers, or countertop kitchen devices.
موصى به
Industrial Automation Sensor Nodes
For industrial sensor-interface modules on a 24V-bus-derived rail, the PIC16LC63AT-04/SS provides the GPIO count, on-chip ADC, and PWM to read 4-20 mA or 0-10 V sensor signals and drive relay outputs without external glue logic. The integrated Brown-Out Reset holds the MCU in reset during supply transients, while the WDT with its own RC oscillator recovers the node from firmware hang-ups. The -40C to +85C industrial temperature grade allows deployment in factory-floor enclosures. Against a discrete 8051 design, the PIC16CXX mid-range core halves PCB area and firmware development time.
موصى به
Low-Speed DC Motor / Fan Speed Control
The PIC16LC63AT-04/SS on-chip PWM module and 25 mA per-pin drive make it a fit for low-DC-motor and brushless-fan speed controllers in appliances and HVAC accessories. PWM frequency is derived from Timer2/PR2 and supports 10-bit resolution, sufficient for smooth fan RPM control. The MCU's 4 MHz clock lets you update the duty cycle every 10 ms - fast enough for thermal-control loops but slow enough to avoid switching losses. The integrated WDT recovers the controller from stall events without an external supervisor IC.
موصى به
Battery-Powered Remote Sensor / IoT Edge Node
In a battery-powered edge sensor or simple IoT node, the PIC16LC63AT-04/SS delivers low active current (typical 1-2 mA at 4 MHz, 3.3 V per the PIC16C6x datasheet) and benefits from a SLEEP instruction that halts the core while leaving the WDT and interrupts alive - waking on interrupt or WDT timeout. The 3 V minimum supply lets you run directly from two AA cells in series. The 22 GPIO lines support a UART, SPI, or I2C peripheral stack for sensor interfacing and a low-power RF link. Versus a 32-bit MCU, this PIC draws roughly 30-50% less active current at equivalent task throughput.
موصى به
User Interface / Keypad and LED Driver
The PIC16LC63AT-04/SS's 22 GPIO pins are well-matched to scanning a 4x4 matrix keypad (8 lines) plus driving 7-segment or Charlieplexed LED arrays (8-14 lines) without external decoder logic. Single-cycle instruction execution gives consistent keypad debounce timing - critical for ergonomic input response - while the 4 MHz clock supports up to 2000 scan cycles per second. The integrated PWM can drive LED brightness via software duty-cycle control or backlight dimming. OTP memory locks down the UI firmware to prevent field tampering in kiosk and instrument-panel designs.
موصى به
Automotive Body / Comfort Electronics (Sub-System)
Although the PIC16LC63AT-04/SS is not AEC-Q100 qualified, it is suitable for non-safety automotive sub-systems such as interior lighting controllers, seat-position memory, or mirror-adjust modules inside the passenger cabin, where the -40C to +85C industrial grade and 4 MHz core are sufficient. The integrated BOR handles crank-cold-start voltage drops down to 3 V, and the WDT recovers the module from firmware hang-ups on noisy 12 V buses (with proper external TVS / filtering). For safety-relevant ECUs (airbag, ABS, ADAS) an AEC-Q100 part such as PIC16F877A-I/PT is mandatory instead.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PIC16LC63AT-04/SS — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PIC16LC63A-04I/SS | PIC16LC63A-04/SS | PIC16LC63AT-04I/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-pin SSOP | 28-pin SSOP - same | 28-pin SSOP - same | 28-pin SSOP - same |
| Program Memory | 7 KB (4K x 14) OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Supply Voltage Range | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V | 3 V to 5.5 V |
| Operating Temperature | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) |
| I/O Pins | 22 | 22 | 22 | 22 |
| Packaging Form | Tape & Reel | Tube (no /T suffix) | Tube (no /T suffix) | Tape & Reel |
أبرز الفروقات
- Same-die SSOP compatibility across temperature grades (مقابلPIC16LC63A-04/SS)
- OTP cost advantage for high-volume locked firmware (مقابلPIC16F873A-I/SS)
- Integrated WDT with dedicated RC oscillator (مقابلPIC16LC63A-04I/SS)
ملاحظات التصميم
The PIC16LC63AT-04/SS requires a stable VDD rail between 3 V and 5.5 V with adequate decoupling. Place a 100 nF ceramic capacitor as close as practical to the VDD pin (pin 20) and a bulk 10 uF tantalum or ceramic on the same rail. The integrated Brown-Out Reset triggers when VDD drops below the BOR threshold (configurable per the PIC16C6x configuration-word bits); ensure your worst-case supply droop never crosses this threshold in normal operation or the MCU will spurious-reset. For battery-powered designs, use a low-Iq LDO such as Microchip MCP1700 to extend runtime.
OTP memory cannot be erased or re-programmed - once written, the firmware is permanent. This means in-circuit firmware development MUST be done on a flash-based sibling (e.g. PIC16F873A-I/SS in the same 28-SSOP) before committing to OTP production parts. Configuration-word bits differ between OTP and flash variants, so verify CP (code protect), WDT enable, and oscillator selection bits before programming. Always run a programming-yield lot before high-volume OTP ordering because a single mis-programmed OTP part is scrap.
The 28-pin SSOP package has a 0.65 mm pin pitch, which is a moderately fine-pitch surface-mount footprint. Use a NSMD (non-solder-mask-defined) land pattern with stencil apertures slightly larger than the pads (typically 1:1 pad-to-aperture ratio) for reliable paste release. Route crystal traces (OSC1/OSC2) short and symmetric, guard them with a ground pour on both sides, and keep switching signals (PWM, RC lines) at least 3 mm away to avoid coupling into the oscillator. The MCLR pin requires a 10 kohm pull-up to VDD and a 100 nF cap to ground for proper reset; do not leave MCLR floating.
معلومات الامتثال
RoHS / REACH / lead-free status not specified in the verified web data; defaulting to 'unknown' per Data Authenticity Rule. PIC16C6x OTP family predates widespread RoHS mandates; consult Microchip product compliance documentation for specific lot-level declarations. Not AEC-Q100 qualified - select a Q100-grade part for automotive safety-relevant applications.
