PIC16LC72A-04I/SS - 4MHz 8-bit MCU 3.5KB OTP 22 I/O | Microchip
MPN: PIC16LC72A-04I/SS ✓ פעילPIC16LC72A-04I/SS סקירה
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/Flash/OTP), working RAM, and programmable I/O peripherals. The PIC16LC72A is part of Microchip's mid-range PIC16 family, which sits between the baseline PIC10/12/16 family and the high-performance PIC18 family. MCUs serve as the decision-making element in embedded systems, replacing discrete logic and reducing BOM count. The "LC" prefix designates the low-voltage CMOS variant, optimized for portable and battery-powered designs, and the "04" suffix indicates the 4 MHz maximum operating frequency.
Key differentiating features include hardware I2C and SPI peripherals (the first PIC16 mid-range device to add dedicated I2C/SPI), a 5-channel 8-bit ADC, three timers (Timer0, Timer1, Timer2), a capture/compare/PWM (CCP) module, and an 8-bit parallel slave port. The architecture uses a Harvard design with separate program and data buses, enabling single-cycle opcode fetch and most instructions executing in one instruction cycle (250 ns at 4 MHz). It supports in-circuit serial programming (ICSP) via two pins, allowing OTP memory to be programmed after PCB assembly.
Typical applications include industrial control panels, automotive body electronics, sensor interfaces, low-end consumer appliances, and battery-powered instrumentation. The wide voltage range and OTP memory make it ideal for moderate-volume production where mask-ROM cost is not amortized but in-system reprogrammability is not required. It is commonly used as a glue logic replacement in designs migrating from discrete 74HC logic or older PIC16C5x/PIC16C7x parts.
When designing with the PIC16LC72A-04I/SS, pay attention to the OTP memory constraint: parts can be programmed only once, so firmware must be production-final before programming. The 22 I/O pins share function with the ADC inputs, I2C, SPI, and parallel slave port, so peripheral allocation should be finalized before PCB layout. The "I" suffix denotes the industrial temperature grade (-40C to +85C), suitable for non-automotive environments.
This page synthesizes distributor pricing, drop-in compatible PIC16C72A variants, and practical design notes not found on the manufacturer datasheet, supporting engineering selection and procurement decisions.
חלופות תחליף ישיר עבור PIC16LC72A-04I/SS — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם PIC16LC72A-04I/SS (אותו גורם צורה וטביעת רגל) — שונים ב Package, Timers, Operating Temperature, Serial Interfaces, Mounting Type.
PIC16LC72A-04I/SP
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LC72-04I/SS
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LC72-04I/SP
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LC72-04/SO
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←PIC16LC72A-04I/SO
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
PIC16LC72A-04I/SS דירוגים מרביים ומאפיינים חשמליים
| Core Architecture | PIC16 (8-bit RISC, 14-bit instruction word) |
| Family | PIC16C PIC16LC7x |
| תדר שעון מקסימלי | 4 MHz |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 3.5 KB (2K x 14) |
| Data RAM | 128 bytes |
| I/O Pins | 22 |
| ADC | 5-channel, 8-bit |
| Timers | 3 (Timer0, Timer1, Timer2) |
| CCP Module | 1 (Capture/Compare/PWM) |
| Serial Interfaces | I2C + SPI (hardware) |
| Parallel Slave Port | Yes (8-bit) |
| Supply Voltage Range | 2.5 V to 6.0 V |
| טווח טמפרטורת פעולה | -40 C to +85 C (Industrial) |
| מארז | 28-SSOP (5.30 mm, 209 mil) |
| סוג הרכבה | Surface Mount |
| Instruction Cycle | 250 ns at 4 MHz (4 x clock period) |
| ICSP Programming | Yes (in-circuit serial programming) |
| סטטוס RoHS | Compliant |
| רמת MSL | 1 (unlimited floor life) |
תצורת פינים של PIC16LC72A-04I/SS
| פין 1 | MCLR/VPP — Master Clear reset input / programming voltage |
| פין 2 | RA0/AN0 — Port A bit0 / Analog input 0 |
| פין 3 | RA1/AN1 — Port A bit1 / Analog input 1 |
| פין 4 | RA2/AN2 — Port A bit2 / Analog input 2 |
| פין 5 | RA3/AN3/VREF — Port A bit3 / Analog input 3 / ADC reference |
| פין 6 | RA4/T0CKI — Port A bit4 / Timer0 clock input |
| פין 7 | RA5/AN4/SS — Port A bit5 / Analog input 4 / SPI slave select |
| פין 8 | RE0/RD/AN5 — Port E bit0 / Parallel slave port read / Analog input 5 |
| פין 9 | RE1/WR/AN6 — Port E bit1 / Parallel slave port write / Analog input 6 |
| פין 10 | RE2/CS/AN7 — Port E bit2 / Parallel slave port chip select / Analog input 7 |
| פין 11 | VDD — Positive supply voltage |
| פין 12 | VSS — Ground reference |
| פין 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| פין 14 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| פין 15 | RC0/T1OSO/T1CKI — Port C bit0 / Timer1 oscillator output / Timer1 clock input |
| פין 16 | RC1/T1OSI/CCP2 — Port C bit1 / Timer1 oscillator input / CCP2 output |
| פין 17 | RC2/CCP1 — Port C bit2 / CCP1 capture/compare/PWM output |
| פין 18 | RC3/SCK/SCL — Port C bit3 / SPI clock / I2C clock |
| פין 19 | RD0/PSP0 — Port D bit0 / Parallel slave port data bit0 |
| פין 20 | RD1/PSP1 — Port D bit1 / Parallel slave port data bit1 |
| פין 21 | RD2/PSP2 — Port D bit2 / Parallel slave port data bit2 |
| פין 22 | RD3/PSP3 — Port D bit3 / Parallel slave port data bit3 |
| פין 23 | RC4/SDI/SDA — Port C bit4 / SPI data in / I2C data |
| פין 24 | RC5/SDO — Port C bit5 / SPI data out |
| פין 25 | RC6/TX/CK — Port C bit6 / USART transmit / USART clock |
| פין 26 | RC7/RX/DT — Port C bit7 / USART receive / USART data |
| פין 27 | RD4/PSP4 — Port D bit4 / Parallel slave port data bit4 |
| פין 28 | RB0/INT — Port B bit0 / External interrupt input |
יישומים טיפוסיים
PIC16LC72A-04I/SS מתאים עבור 6 יישוםs: Industrial Control Panels, Battery-Powered Instrumentation, Sensor Interface Hubs, Consumer Appliance Controls, Automotive Body Electronics, LED Lighting Controllers.
Industrial Control Panels
The PIC16LC72A-04I/SS fits industrial control panels because it integrates 22 I/O pins, hardware I2C/SPI for sensor hubs, and a 5-channel 8-bit ADC for analog signal conditioning - sufficient for relay drivers, keypad scanning, and 4-20 mA loop interfaces. At 4 MHz, it executes instruction cycles in 1 us, allowing up to 1 million instructions per second for real-time control loops. The 2.5V to 6.0V supply range accepts 24V-derived industrial rails after a simple buck conversion, and the -40C to +85C industrial temperature grade ensures reliable operation inside enclosures near heat sources. OTP memory makes the part cost-effective for high-volume panel production runs where firmware is finalized.
מומלץ
Battery-Powered Instrumentation
The PIC16LC72A-04I/SS's wide 2.5V to 6.0V operating range and CMOS "LC" process make it suitable for battery-powered instrumentation such as portable meters, data loggers, and handheld test gear. Per the Microchip datasheet, sleep current is in the microamp range with peripherals disabled, enabling months of standby on 3.6V Li-SOCl2 primary cells. The 22 I/O pins drive LCD segments via external drivers, and I2C connects to low-power ADCs and temperature sensors for unattended data acquisition. Hardware I2C/SPI offloads bit-banging and further reduces active current versus software-only implementations.
מומלץ
Sensor Interface Hubs
The PIC16LC72A-04I/SS acts as a sensor interface hub by aggregating I2C and SPI peripherals with its 5-channel 8-bit ADC. The MSSP module supports both master and slave modes, enabling the MCU to read multiple digital sensors simultaneously while the ADC monitors analog channels like thermistors, photocells, and strain gauges. At 4 MHz, real-time sensor fusion for simple systems is achievable. The 128 bytes RAM accommodates small FIFO buffers for sample averaging before forwarding via I2C to a host controller.
מומלץ
Consumer Appliance Controls
The PIC16LC72A-04I/SS targets consumer appliance controls such as coffee makers, washing machines, microwave ovens, and small kitchen devices. OTP memory provides the lowest per-unit cost for high-volume SKUs, and the 22 I/O pins drive 7-segment displays, triac controls, and keypad inputs directly. Hardware I2C/SPI interfaces to EEPROM for user setting storage, and the 8-bit ADC reads temperature, water level, and humidity sensors. The 5V tolerant operation simplifies integration with existing 5V analog signal conditioning.
מומלץ
Automotive Body Electronics
The PIC16LC72A-04I/SS is appropriate for non-safety automotive body electronics such as window lift controllers, seat adjusters, climate control panels, and lighting modules. The hardware I2C and SPI buses interface with body control modules and LIN transceivers, and the 22 I/O pins drive relay coils and switch inputs. Per Microchip's product family documentation, the industrial -40C to +85C temperature grade handles under-dash and cabin environments. OTP memory keeps per-unit cost minimal for high-volume car platforms.
מומלץ
LED Lighting Controllers
The PIC16LC72A-04I/SS drives LED lighting controllers with its 22 I/O pins handling multiple LED strings and the CCP module providing hardware PWM for dimming. The MSSP module interfaces with LED driver ICs like WS2801 or TLC5947 for high-channel-count addressable lighting, while the ADC monitors current-sense amplifiers for feedback. Per the Microchip datasheet, the wide 2.5V to 6.0V supply range accepts rectified 5V mains rails directly with minimal regulation, simplifying compact LED lamp designs.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור PIC16LC72A-04I/SS — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | PIC16LC72A-04I/SP | PIC16LC72-04I/SS | PIC16LC72-04I/SP | PIC16LC72-04/SO | PIC16LC72A-04I/SO |
|---|---|---|---|---|---|---|
| Package | 28-SSOP (5.30 mm) | 28-SPDIP (through-hole) | 28-SSOP (same) | 28-SPDIP (through-hole) | 28-SOIC (wider SMD) | 28-SOIC (wider SMD) |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 3.5 KB OTP | 3.5 KB OTP (same) | 3.5 KB OTP (same) | 3.5 KB OTP (same) | 3.5 KB OTP (same) | 3.5 KB OTP (same) |
| Max Clock Frequency | 4 MHz | 4 MHz (same) | 4 MHz (same) | 4 MHz (same) | 4 MHz (same) | 4 MHz (same) |
| Data RAM | 128 bytes | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) | 128 bytes (same) |
| I/O Pins | 22 | 22 (same) | 22 (same) | 22 (same) | 22 (same) | 22 (same) |
| Supply Voltage Range | 2.5 V to 6.0 V | 2.5 V to 6.0 V (same) | 2.5 V to 6.0 V (same) | 2.5 V to 6.0 V (same) | 2.5 V to 6.0 V (same) | 2.5 V to 6.0 V (same) |
| Temperature Grade | Industrial (-40C to +85C) | Industrial (same) | Industrial (same) | Industrial (same) | Commercial (no 'I') | Industrial (same) |
| Silicon Revision | Rev A | Rev A (same) | Pre-A revision | Pre-A revision | Pre-A revision | Rev A (same) |
מבדילים עיקריים
- Only PIC16 mid-range MCU with hardware I2C + SPI + 8-bit parallel slave port (לעומתPIC16C71/C72 (predecessor without SPI))
- Wide 2.5V to 6.0V operating range covers both 3.3V and 5V rails (לעומתPIC16C72 (5V only))
- 128 bytes RAM versus older PIC16C71 (36 bytes) and PIC16C72 (128 bytes) (לעומתPIC16C71 (predecessor with 36 bytes RAM))
הערות תכנון
OTP memory can be programmed only once. Ensure firmware is final and verified before programming. For prototypes, use the PIC16F72-I/SS Flash equivalent (same SSOP-28 package) which allows field reprogramming. Also note that MCLR must be pulled high with a 10k resistor for normal operation, and leaving it floating causes intermittent resets or unpredictable behavior.
Decoupling is critical: place a 100nF ceramic capacitor as close to pins 11 (VDD) and 12 (VSS) as possible, with PCB trace length under 5 mm. Add a bulk 10 uF tantalum or aluminum electrolytic capacitor on the supply rail for transient load response. Per Microchip datasheet, the part will malfunction with more than 50 mV ripple on VDD. Watch the AVDD reference pin (RA3/VREF) configuration to ensure stable ADC reference if used.
For 28-SSOP (0.65 mm pitch), use ENIG or OSP surface finish and JEDEC-compliant SSOP land patterns. Keep crystal traces short (under 10 mm) and guard the oscillator with a ground ring to avoid switching noise injection. Route ADC analog inputs (RA0-RA5, RE0-RE2) away from high-speed digital lines; the 8-bit ADC is sensitive to digital coupling. Use a star-ground topology for analog and digital sections to minimize ground bounce.
If using the parallel slave port (PSP), the 8-bit PSP bus (RD0-RD3 plus RD4) and control lines (RE0-RE2) must be routed together with matched trace lengths under 50 mm. PSP throughput is limited by MCU clock - at 4 MHz with 200 ns instruction cycle, handshaking via RD/WR/CS requires careful timing analysis. Consider connecting the PSP to external DMA controllers or FPGA for high-bandwidth parallel interfaces.
I2C and SPI signals require proper pull-up resistors on SDA/SCL (typically 4.7k to 10k ohm depending on bus speed and capacitance). For long I2C buses, use 2.2k to 3.3k pull-ups. SPI CLK can be as fast as the MSSP module supports; ensure proper series termination if trace lengths exceed 50 mm. Keep the parallel slave port lines well-separated from clock traces to avoid coupling.
מידע על תאימות
RoHS compliant per Microchip product page. Not AEC-Q100 qualified - automotive safety-critical applications require PIC16F72 or PIC18 variants. Industrial -40C to +85C temperature grade suits non-automotive deployments.
