PIC16C72A-20I/SS - 8-Bit 20MHz 3.5KB OTP MCU 28-SSOP | Microchip
Teilenummer: PIC16C72A-20I/SS ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $4.6 | $4,60 |
| 10 | $4.14 | $41,40 |
| 100 | $3.59 | $359,00 |
| 500 | $3.14 | $1.570,00 |
| 1.000 | $2.79 | $2.790,00 |
PIC16C72A-20I/SS Übersicht
A microcontroller (MCU) is a single-chip computer containing a CPU core, non-volatile program memory, working RAM, and a set of programmable peripheral interfaces. The 8-bit class of microcontrollers dominates cost-sensitive embedded control tasks, where deterministic instruction timing and low power are valued more than raw throughput. PIC microcontrollers, originally pioneered by General Instrument and popularized by Microchip Technology, use a Harvard architecture with separate program and data buses and a reduced instruction set, allowing most instructions to execute in a single instruction cycle.
The PIC16C72A executes instructions in 200 ns at 20 MHz, and its core features an 8-level deep hardware stack, direct/indirect/relative addressing modes, and a programmable code protection bit. The five 8-bit ADC channels with input multiplexing support sensor acquisition without external analog components, while the 8-bit/16-bit Timer0/Timer1/Timer2 blocks and CCP module support PWM-driven motor, lighting and switching applications.
Operating from 2.5 V to 5.5 V (industry-standard 5 V), the PIC16C72A includes brown-out reset, power-on reset, watchdog timer with its own on-chip RC oscillator, and an in-circuit serial programming interface. The 28-SSOP package (209 mil body) provides 22 digital I/O lines with high-current sink/source capability. The OTP memory is one-time programmable, requiring factory or field programming before deployment.
Typical applications include appliance control, automotive body and chassis subsystems, HVAC fan and damper control, smart-card readers, battery chargers, and small-form-factor sensor interface boards. The wide operating temperature range of -40 °C to +85 °C (industrial grade, denoted by the I suffix) supports harsh environments.
When designing with this device, ensure adequate decoupling (100 nF ceramic at VDD) and reserve an MCLR pull-up since the master-clear pin is used for in-circuit programming. The OTP memory restricts firmware iteration in production; consider the PIC16F72 flash variant for development.
This page synthesizes distributor pricing, drop-in alternative MPNs, and practical design guidance not consolidated on the manufacturer datasheet.
Drop-in-Alternativen für PIC16C72A-20I/SS – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16C72A-20I/SS (gleiche Bauform und Footprint) – abweichend in Timers, Package, ADC, Core Architecture, Data EEPROM.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16C72A-20I/SS
✅ Drop-In✓ Auf Lager
$2.79 / Stück
Datenblatt ansehen →PIC16C72A-20I/ML
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$3.1 / Stück
Datenblatt ansehen →PIC16C72-20I/SS
✅ Drop-In✓ Auf Lager
$5.1 / Stück
Datenblatt ansehen →PIC16C72-20/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$3.1 / Stück
Datenblatt ansehen →PIC16C72-20E/SS
✅ Drop-In ⚠️ Spezifikationen ungeprüft✓ Auf Lager
$4.04 / Stück
Datenblatt ansehen →PIC16F72-I/SS
✅ Drop-In✓ Auf Lager
$2.19 / Stück
Datenblatt ansehen →PIC16C72A-20I/SS Grenzwerte & elektrische Eigenschaften
| Core Architecture | PIC16C (8-bit RISC, Harvard) |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| Data RAM Size | 128 bytes |
| Maximum CPU Speed | 20 MHz (200 ns instruction cycle) |
| Instruction Set Size | 35 single-word instructions |
| Digital I/O Pins | 22 |
| ADC | 5 channels, 8-bit resolution |
| Timers | 3 (Timer0 8-bit, Timer1 16-bit, Timer2 8-bit) |
| CCP Modules | 1 (Capture/Compare/PWM) |
| Serial Interface | USART (SCI) |
| Versorgungsspannung | 2.5 V to 5.5 V |
| Betriebstemperatur | -40 °C to +85 °C (Industrial) |
| Gehäuse | 28-SSOP (209 mil) |
| Montageart | Surface Mount |
| MSL-Level | 1 |
| RoHS-Status | Compliant |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| Brown-out Reset | Yes |
| In-Circuit Programming | Yes (ICSP via MCLR/RB6/RB7) |
PIC16C72A-20I/SS Pin-Konfiguration
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage input |
| Pin 2 | RA0/AN0 — Port A bit 0 / Analog input channel 0 |
| Pin 3 | RA1/AN1 — Port A bit 1 / Analog input channel 1 |
| Pin 4 | RA2/AN2 — Port A bit 2 / Analog input channel 2 |
| Pin 5 | RA3/AN3/VREF — Port A bit 3 / Analog input channel 3 / ADC voltage reference |
| Pin 6 | RA4/T0CKI — Port A bit 4 / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — Port A bit 5 / Analog input channel 4 / SPI slave select |
| Pin 8 | VSS — Ground reference |
| Pin 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 10 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 11 | RC0/T1OSO/T1CKI — Port C bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 12 | RC1/T1OSI/CCP2 — Port C bit 1 / Timer1 oscillator input / CCP2 output |
| Pin 13 | RC2/CCP1 — Port C bit 2 / CCP1 (PWM) output |
| Pin 14 | RC3/SCK/SCL — Port C bit 3 / SPI clock / I2C clock |
| Pin 15 | RC4/SDI/SDA — Port C bit 4 / SPI data in / I2C data |
| Pin 16 | RC5/SDO — Port C bit 5 / SPI data out |
| Pin 17 | RC6/TX/CK — Port C bit 6 / USART TX / USART clock |
| Pin 18 | RC7/RX/DT — Port C bit 7 / USART RX / USART data |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage |
| Pin 21 | RB0/INT — Port B bit 0 / External interrupt input |
| Pin 22 | RB1 — Port B bit 1 |
| Pin 23 | RB2 — Port B bit 2 |
| Pin 24 | RB3/PGM — Port B bit 3 / LVP programming input |
| Pin 25 | RB4 — Port B bit 4 |
| Pin 26 | RB5 — Port B bit 5 |
| Pin 27 | RB6/PGC — Port B bit 6 / ICSP clock |
| Pin 28 | RB7/PGD — Port B bit 7 / ICSP data |
Typische Anwendungen
PIC16C72A-20I/SS ist geeignet für 6 Anwendungs: White-Goods Appliance Control, Automotive Body Electronics, HVAC Fan and Damper Control, Battery Chargers and Power Management, Smart Sensor Interface Boards, Industrial Timer and Counter Modules.
White-Goods Appliance Control
The PIC16C72A-20I/SS is well suited to washing-machine, dishwasher, and microwave-oven control boards. Its 20 MHz PIC16 RISC core and 200 ns instruction cycle handle user-interface scanning, motor PWM drive via the CCP module, and relay sequencing with deterministic timing. The 5-channel 8-bit ADC reads water level, temperature, and humidity sensors directly, eliminating external analog components. OTP memory locks the firmware at production cost, while the 28-SSOP package withstands the thermal environment of an enclosed appliance chassis. Compared with newer Cortex-M0 parts, the PIC16C72A trades software flexibility for sub-$3 unit cost at volume.
Empfohlen
Automotive Body Electronics
Inside cabin and body-control modules, the PIC16C72A-20I/SS drives seat-position motors, mirror adjusters, and interior lighting via its CCP/PWM block and 22 digital I/O lines. The USART links to a body-control network, while the 5-channel 8-bit ADC reads switch positions and thermistor inputs. Operating from -40 °C to +85 °C industrial range, the part tolerates the cabin thermal envelope. For under-hood deployment, designers should select an AEC-Q100 qualified sibling such as PIC16F72-E/SS. The 28-SSOP footprint supports standard SMT lines already qualified for automotive Tier-1 contract manufacturers.
Empfohlen
HVAC Fan and Damper Control
Fan-speed regulators, zone dampers, and thermostat actuators use the PIC16C72A-20I/SS because of its three timers and dedicated CCP/PWM module, which together generate the variable-duty drive signals for triac-gated AC motors. The 5-channel 8-bit ADC reads NTC room sensors and humidity transducers simultaneously, while the USART provides a Modbus or simple UART link to a central HVAC controller. Brown-out reset and watchdog timer with a dedicated on-chip RC oscillator protect the design against supply droop common to long motor wiring.
Empfohlen
Battery Chargers and Power Management
Lead-acid and lithium-ion charger designs use the PIC16C72A-20I/SS to implement CC/CV charge profiles. The 8-bit ADC monitors battery voltage and charge current with 5 mV resolution (5 V reference / 1024), while the PWM output drives a buck converter at up to 20 MHz instruction rate. The watchdog timer resets the charger if firmware hangs, and brown-out reset protects against partial brown-out during solar or generator input. Operating from 2.5 V to 5.5 V, the MCU runs directly from a 3.3 V regulator for single-cell Li-ion packs.
Empfohlen
Smart Sensor Interface Boards
Sensor hubs aggregating temperature, pressure, and flow transmitters leverage the PIC16C72A-20I/SS's 5-channel 8-bit ADC, three timers, and USART to build compact multi-transmitter boards. The 20 MHz core executes linearization and basic compensation algorithms within 200 ns per instruction, supporting 10 kHz sample rates across all channels. The 28-SSOP package mounts on standard industrial sensor PCBs and survives -40 °C to +85 °C industrial environments. The OTP memory locks calibration coefficients, reducing field-tampering risk.
Empfohlen
Industrial Timer and Counter Modules
Programmable logic controllers, conveyor sequencers, and industrial counter modules use the PIC16C72A-20I/SS to combine the 16-bit Timer1, the 8-bit Timer0 and Timer2, and the CCP module into precise event counters and PWM outputs. The USART supports RS-232 or RS-485 comms to a master PLC, while the 22 digital I/O lines interface to optocouplers and 24 V industrial signals via external drivers. The hardware stack of 8 levels handles nested interrupt-driven routines without software stack overflow.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16C72A-20I/SS – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16C72-20I/SS | PIC16C72-20/SS | PIC16C72-20E/SS | PIC16F72-I/SS |
|---|---|---|---|---|---|
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same |
| Brand | Microchip Technology | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same | Microchip Technology - same |
| Program Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (reprogrammable) |
| Program Memory Size | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) | 3.5 KB (2K x 14) |
| Maximum CPU Speed | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Data RAM Size | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| ADC Channels | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit | 5 x 8-bit |
| Operating Temperature | -40 °C to +85 °C (Industrial) | -40 °C to +85 °C (Industrial) | 0 °C to +70 °C (Commercial) | -40 °C to +125 °C (Extended) | -40 °C to +85 °C (Industrial) |
Wichtigste Unterscheidungsmerkmale
- Industrial temperature range in 28-SSOP for cost-sensitive production (vs. PIC16C72-20/SS)
- Flash-programmable drop-in alternative available (vs. PIC16F72-I/SS)
- Compact QFN option for height-constrained designs (vs. PIC16C72A-20I/ML)
Designhinweise
Place a 100 nF ceramic decoupling capacitor within 5 mm of each VDD pin (pins 9 and 20) and a bulk 10 µF tantalum or aluminium-polymer capacitor at the board supply input. The PIC16C72A-20I/SS contains an internal power-on reset and brown-out reset; the brown-out trip voltage is programmable but the firmware-default 4.0 V threshold suits most 5 V systems. Estimated: with VDD = 5 V and I_DD = 2 mA at 20 MHz, each decoupling cap dissipates negligible power, but traces should be short to limit switching transients on adjacent ADC channels.
Route the OSC1/OSC2 traces short and symmetric, guarding them with a ground ring on both sides when using a high-speed crystal (>16 MHz). Place the crystal within 5 mm of the MCU and avoid running digital signal traces parallel to the oscillator traces. The MCLR pin must have a 10 kΩ pull-up to VDD and a 100 nF cap to ground for in-circuit serial programming (ICSP) and reliable reset. Use the SSOP-28 land pattern with thermal relief spokes to ease hand-rework without cold joints.
Avoid powering the PIC16C72A-20I/SS below 2.5 V - the ADC and brown-out reset lose accuracy. Do not leave the MCLR pin floating; a floating MCLR causes intermittent resets. The OTP memory is one-time programmable, so commit firmware only after full validation on a PIC16F72-I/SS Flash prototype - migrating back from C72A to F72 requires no PCB changes. Estimated: programming the OTP on a factory line requires 13 V VPP on MCLR for 100 ms via the Microchip MPLAB PM3, so provision an ICSP header for factory programming even if no field updates are planned.
Compliance-Informationen
Per Microchip product page and DigiKey listing. Industrial -40 to +85 °C temperature grade only; the I suffix denotes industrial range. Not AEC-Q100 qualified - select PIC16F72-E/SS for automotive.
