PIC16C622AT-20/SS - 8-bit OTP MCU, 3.5KB, 20MHz | Microchip
MPN: PIC16C622AT-20/SS ✗ اختتامِ زندگیPIC16C622AT-20/SS جائزہ
A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and I/O peripherals on a single die. The PIC16C series belongs to Microchip's mid-range 8-bit architecture family, sitting between baseline PIC10/12/16 devices and the enhanced PIC18 family in the broader 8-bit MCU hierarchy. OTP (One-Time Programmable) ROM variants are mask-programmed at the factory rather than field-flashed, which historically offered lower per-unit cost than flash parts but eliminated in-circuit reprogrammability, making them suitable for high-volume, fixed-functionality production.
Key features of the PIC16C622AT-20/SS include two analog comparators with programmable reference, a capture/compare/PWM (CCP) module, a 5-channel 8-bit ADC, two 8-bit timers plus one 16-bit timer, an internal 4MHz RC oscillator with calibration, and a brown-out reset (BOR) circuit. The /20 speed suffix denotes a 20MHz maximum oscillator frequency, while the /SS suffix denotes a 20-lead Shrink Small Outline Package with 0.65mm pitch and gull-wing leads suitable for surface-mount assembly. The 'A' suffix indicates the silicon revision, and 'T' denotes tape-and-reel packaging.
Architecturally, the device uses a 14-bit instruction word with single-cycle execution except for branch instructions, delivering ~5 MIPS sustained throughput at 20MHz. Its enhanced mid-range core includes an interrupt controller with hardware context save and a hardware multiplier for 8x8 unsigned operations. The device's low-power features include a SLEEP mode with <1µA typical standby current and wake-up on I/O change or peripheral interrupt, enabling battery-friendly designs.
Typical applications include appliance control boards, sensor signal conditioning with on-chip comparator/ADC, simple motor control via the CCP module, automotive interior subsystems, security panel keypads, and consumer remote-control encoder ICs. The internal comparator and voltage reference are particularly useful for thermostat, battery monitor, and level-detection circuits.
When designing with the PIC16C622AT-20/SS, note that OTP precludes firmware updates: any bug in mask-programmed firmware requires a full device replacement. For prototypes or field-upgradable designs, select the PIC16F or PIC16LF flash variants in the same pinout instead.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found on the manufacturer datasheet front page, giving engineers a single source for both parametric comparison and lifecycle planning.
کے لیے ڈراپ اِن متبادل PIC16C622AT-20/SS — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں PIC16C622AT-20/SS (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Package, Operating Temperature, Program Memory Size, Timers, Analog Comparators.
PIC16F622-I/SS
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
PIC16F627A-I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C621AT-20I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C620A-20I/SS
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C622A-20E/P
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →PIC16C622AT-20/SS زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | PIC16C (8-bit RISC, 14-bit instruction word) |
| Program Memory | 3.5KB (2K x 14) OTPROM |
| RAM | 128 x 8 bytes |
| Data EEPROM | 128 x 8 bytes |
| زیادہ سے زیادہ کلاک فریکوئنسی | 20 MHz |
| Instruction Cycle Time | 200 ns |
| سپلائی وولٹیج | 4.0 V to 5.5 V |
| آپریٹنگ درجہ حرارت | 0C to +70C (Commercial) |
| I/O Pins | 13 |
| ADC | 5-channel, 8-bit |
| Analog Comparators | 2 with programmable voltage reference |
| Timers | 2 x 8-bit + 1 x 16-bit |
| CCP Module | 1 (Capture/Compare/PWM) |
| Internal Oscillator | 4 MHz RC, factory calibrated |
| Brown-Out Reset | Yes |
| پیکیج | 20-pin SSOP (Shrink Small Outline, 0.65mm pitch) |
| ماؤنٹنگ ٹائپ | Surface Mount |
PIC16C622AT-20/SS پن کنفیگریشن
| پن 1 | RA0/AN0 — PORTA bit 0 / ADC input 0 |
| پن 2 | RA1/AN1 — PORTA bit 1 / ADC input 1 |
| پن 3 | RA2/AN2/VREF- — PORTA bit 2 / ADC input 2 / ADC VREF- |
| پن 4 | RA3/AN3/VREF+ — PORTA bit 3 / ADC input 3 / ADC VREF+ |
| پن 5 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| پن 6 | RA5/AN4/SS — PORTA bit 5 / ADC input 4 / SPI slave select |
| پن 7 | RE0/AN5 — PORTE bit 0 / ADC input 5 |
| پن 8 | RE1/WR/AN6 — PORTE bit 1 / EEPROM write / ADC input 6 |
| پن 9 | RE2/CS/AN7 — PORTE bit 2 / EEPROM chip select / ADC input 7 |
| پن 10 | OSC1/CLKIN — Crystal oscillator input / external clock input |
| پن 11 | OSC2/CLKOUT — Crystal oscillator output / clock output |
| پن 12 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock |
| پن 13 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 |
| پن 14 | RC2/CCP1 — PORTC bit 2 / Capture/Compare/PWM 1 |
| پن 15 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| پن 16 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| پن 17 | RC5/SDO — PORTC bit 5 / SPI data out |
| پن 18 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| پن 19 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| پن 20 | VSS — Ground reference |
عام استعمالات
PIC16C622AT-20/SS کے لیے موزوں ہے 6 ایپلیکیشنs: Appliance Control Board, Thermostat and HVAC Sensor Module, Security Panel Keypad Controller, Consumer Remote Control Encoder, Industrial Sensor Signal Conditioning, Battery Monitor and Charger Controller.
Appliance Control Board
The PIC16C622AT-20/SS suits appliance control boards (washing machines, dishwashers, microwave ovens) where its 3.5KB OTPROM holds fixed control firmware, 13 I/O lines drive relays and keypads, and the 5-channel ADC reads temperature sensors and water-level probes. At 20MHz the MCU executes PID control loops with sub-millisecond latency, while the on-chip comparators detect over-current conditions without external op-amps. Unlike flash MCUs, the OTP memory prevents accidental firmware corruption in noisy motor environments, improving long-term reliability.
تجویز کردہ
Thermostat and HVAC Sensor Module
The PIC16C622AT-20/SS is well-suited to thermostat modules where its dual analog comparators with programmable voltage reference enable direct thermistor-based temperature sensing without external ADC ICs. The 8-bit ADC digitizes setpoint readings and ambient humidity sensors, while the CCP module generates PWM outputs for valve actuators. Operating from 4.0V-5.5V with brown-out reset, it tolerates HVAC power-supply transients; the OTP memory ensures firmware integrity against brown-out glitches common in long-wire installations.
تجویز کردہ
Security Panel Keypad Controller
The PIC16C622AT-20/SS serves security alarm panels where it scans 4x4 keypads via PORTB I/O, drives piezo buzzers and LED indicators through the remaining pins, and reads analog sensors via the 8-bit ADC. Its 3.5KB OTPROM stores fixed access codes and zone-monitoring logic, while the brown-out reset protects against tamper attempts on the supply line. The internal 4MHz RC oscillator eliminates external crystals, reducing BOM cost and enabling smaller panel enclosures for residential installations.
تجویز کردہ
Consumer Remote Control Encoder
The PIC16C622AT-20/SS fits consumer remote controls (TV, fan, IR-controlled toys) where its 13 I/O pins drive IR LEDs and read button matrices, the CCP module generates 38kHz carrier waveforms, and the 128-byte EEPROM stores channel presets and pairing codes. The SLEEP mode with <1µA standby current extends battery life to over a year on two AA cells, while wake-up-on-I/O-change eliminates the need for a separate wake-up controller. OTP memory keeps per-unit cost low for high-volume consumer products.
تجویز کردہ
Industrial Sensor Signal Conditioning
The PIC16C622AT-20/SS works as a sensor-conditioning front-end in industrial systems, reading 4-20mA loop signals via its on-chip ADC and applying digital filtering in firmware. The two analog comparators with programmable reference provide hardware threshold detection for alarm outputs independent of firmware execution. Operating over the commercial temperature range with 20MHz throughput, the device handles up to 5kHz sampling rates suitable for vibration and pressure monitoring in factory automation.
تجویز کردہ
Battery Monitor and Charger Controller
The PIC16C622AT-20/SS is well-suited to battery management in portable equipment, where its ADC monitors individual cell voltages, the dual comparators detect over-charge and over-discharge thresholds, and the CCP module generates PWM drive for the charging MOSFET. The 128-byte EEPROM logs charge-cycle counts and battery health parameters, while the brown-out reset protects Li-ion cells from under-voltage damage. Operating from 4.0V-5.5V, it fits directly into single-cell Li-ion or multi-cell NiMH charger designs.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا PIC16C622AT-20/SS — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | PIC16F622-I/SS | PIC16F627A-I/SS | PIC16C621AT-20I/SS | PIC16C620A-20I/SS |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-pin SSOP | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) | 20-pin SSOP (same) |
| Program Memory | 3.5KB OTPROM | 3.5KB Flash | 1.75KB Flash | 1KB OTPROM | 512B OTPROM |
| Memory Type | OTPROM | Flash (reprogrammable) | Flash (reprogrammable) | OTPROM | OTPROM |
| CCP Module | 1 | 1 (same) | 1 (same) | 1 | None |
| UART | Yes (USART) | Yes (USART) | Yes (USART) | No | No |
| Max Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Voltage | 4.0V to 5.5V | 2.0V to 5.5V | 2.0V to 5.5V | 4.0V to 5.5V | 4.0V to 5.5V |
| Lifecycle Status | NRND | Active | Active | NRND | NRND |
اہم امتیازی خصوصیات
- Same pinout with flash reprogrammability (بمقابلہPIC16F622-I/SS)
- Lowest per-unit cost in volume (بمقابلہPIC16C620A-20I/SS)
- Standardized Microchip toolchain support (بمقابلہCross-brand alternatives (e.g., ATtiny26))
ڈیزائن نوٹس
OTP (One-Time Programmable) memory cannot be erased or rewritten: any firmware bug discovered after programming requires full device replacement. For prototypes, development, or any application where firmware may iterate, use the flash-based PIC16F622-I/SS drop-in instead. Plan device provisioning for OTP parts using gang programmers that program all units in parallel to minimize per-unit programming cost on production runs.
The PIC16C622AT-20/SS requires a stable 4.0V-5.5V supply with a 100nF decoupling capacitor placed within 5mm of the VDD pin and a 10uF bulk capacitor on the main supply rail. Brown-out reset is enabled by configuration fuse and triggers at approximately 3.7V; for noisy industrial supplies add an external MCP130T supervisor. The internal 4MHz RC oscillator provides ±1% accuracy after factory calibration but drift over temperature; use an external crystal if UART baud-rate accuracy is critical.
The 20-pin SSOP package has a 0.65mm lead pitch requiring careful PCB layout: use 0.4mm-wide solder pads with 0.65mm pitch, reflow profile per J-STD-020 with peak temperature under 250C, and avoid placing vias within the SSOP land pattern. Keep the exposed lead frame traces short and surrounded by ground pour to reduce EMI coupling into the analog ADC inputs. Reserve a 2-pin ICSP header (RB6/RB7) on prototype boards even though OTP parts cannot be re-flashed - it allows factory programming verification.
تعمیل کی معلومات
RoHS, REACH, lead-free, and halogen-free status not present in the verified web data and require datasheet review; marked as [DATA_NEEDED]. The commercial temperature grade (0C to +70C) is not AEC-Q100 qualified - for automotive applications choose PIC16F627AT-I/SS or PIC16F88T-I/SS instead.
