PIC16F627T-20E/SS - 8-bit 20MHz 1.75KB Flash MCU | Microchip
MPN: PIC16F627T-20E/SS ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.12 | $3.12 |
| 10 | $2.84 | $28.40 |
| 100 | $2.41 | $241.00 |
| 500 | $2.08 | $1,040.00 |
| 1,000 | $1.79 | $1,790.00 |
PIC16F627T-20E/SS Overview
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory (Flash/ROM), volatile working memory (RAM), and a configurable set of peripheral blocks (timers, ADC, communication ports, GPIO). The PIC16F627 belongs to Microchip's mid-range PIC16 family built on a Harvard architecture, in which program and data buses are separate to allow instruction fetch and operand read in a single cycle. Within the broader taxonomy, the PIC16F627 sits as: microcontroller -> 8-bit MCU -> flash MCU -> RISC MCU -> embedded controller.
Key features include 16 I/O pins with individual direction control, two analog comparators with programmable on-chip voltage reference, a Universal Synchronous/Asynchronous Receiver/Transmitter (USART) module, an internal 4 MHz oscillator with software calibration, a Watchdog Timer (WDT) with its own on-chip RC oscillator, Brown-out Detect (BOD), Power-on Reset (POR), Power-up Timer (PWRT), and Oscillator Start-up Timer (OST). High current sink/source capability allows direct LED drive from the I/O pins, eliminating external drivers in many human-interface designs.
The PIC16F627 employs a 14-bit instruction word and a RISC pipeline capable of most instructions executing in one instruction cycle (200 ns at 20 MHz). The Harvard bus, 35 single-word instructions, and 8-level deep hardware stack deliver deterministic interrupt latency, which makes the device suitable for real-time control loops such as motor commutation and sensor polling. Internal phase-locked loop options and the calibrated 4 MHz internal oscillator reduce external component count.
Typical applications include appliance control (washing machines, microwave ovens, coffee makers), battery chargers, remote controls, small industrial sensors, automotive body electronics (non-safety), and low-cost consumer products. The combination of internal oscillator, comparator module, and small SSOP footprint makes it well suited to space-constrained designs that still need deterministic interrupt behavior.
When designing with this part, note that the "E" temperature grade is essential for outdoor, automotive under-hood, or industrial environments. Place decoupling capacitors (100 nF plus 10 uF bulk) within a few millimeters of VDD/VSS pins, and respect the in-circuit serial programming (ICSP) pin assignments (RB6/RB7 for ICSPCLK/ICSPDAT) when laying out the PCB.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives from the same PIC16F62X family, and practical design considerations not collected in the manufacturer datasheet alone.
Drop-in alternatives for PIC16F627T-20E/SS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16F627T-20E/SS (same form factor and footprint) — differing in Package, I/O Pins, Internal Oscillator, Operating Temperature, Supply Voltage Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16F627T-20/SS
✅ Drop-In✓ In Stock
$2.05 / Unit
View Datasheet →PIC16F628AT-20/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F648AT-20/SS
✅ Drop-In📋 Reference alternative (not in catalog)
PIC16F627AT-I/SS
✅ Drop-In✓ In Stock
$1.77 / Unit
View Datasheet →PIC16F627A-I/SS
✅ Drop-In✓ In Stock
$1.12 / Unit
View Datasheet →PIC16F627T-20E/SS Maximum Ratings & Electrical Characteristics
| Core | PIC16 8-bit RISC (Harvard architecture) |
| Instruction Word | 14-bit |
| Program Memory (Flash) | 1.75 KB (1K x 14) |
| RAM | 224 bytes |
| EEPROM | 128 bytes |
| Maximum Clock Frequency | 20 MHz |
| Supply Voltage | 3.0 V to 5.5 V |
| I/O Pins | 16 (bidirectional, individual direction control) |
| Analog Comparators | 2 (with programmable on-chip VREF) |
| USART | 1 (addressable) |
| Timers | Timer0 (8-bit), Timer1 (16-bit), Timer2 (8-bit) |
| Internal Oscillator | 4 MHz (software calibrated) |
| Watchdog Timer | Yes (with dedicated on-chip RC) |
| Brown-out Detect (BOD) | Yes |
| Operating Temperature | -40C to +125C (Extended "E" grade) |
| Package | 20-pin SSOP (5.30 mm body) |
| Mounting Type | Surface Mount |
| MSL Level | 1 |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Lifecycle Status | Active |
PIC16F627T-20E/SS Pin Configuration
| Pin 1 | RA7/OSC1/CLKIN — Bidirectional I/O / oscillator input / external clock input |
| Pin 2 | RA6/OSC2/CLKOUT — Bidirectional I/O / oscillator output / clock output (Fosc/4) |
| Pin 3 | RA5/MCLR/VPP — Bidirectional I/O / Master Clear (active-low reset) / programming voltage |
| Pin 4 | RA4/AN4/TOCKI/C1OUT — Bidirectional I/O / analog input / Timer0 clock / Comparator 1 output |
| Pin 5 | RA3/AN3/CMP1 — Bidirectional I/O / analog input / Comparator 1 non-inverting input |
| Pin 6 | RA2/AN2/CVREF — Bidirectional I/O / analog input / comparator voltage reference output |
| Pin 7 | RA1/AN1/CMP2 — Bidirectional I/O / analog input / Comparator 2 non-inverting input |
| Pin 8 | RA0/AN0/CMP2IN- — Bidirectional I/O / analog input / Comparator 2 inverting input |
| Pin 9 | RA7 — Bidirectional I/O (alternate function on pin 1) |
| Pin 10 | RB7/ICSPDAT — Bidirectional I/O / ICSP data |
| Pin 11 | RB6/ICSPCLK — Bidirectional I/O / ICSP clock |
| Pin 12 | RB5 — Bidirectional I/O |
| Pin 13 | RB4 — Bidirectional I/O |
| Pin 14 | RB3/CCP1 — Bidirectional I/O / Capture/Compare/PWM module 1 |
| Pin 15 | RB2 — Bidirectional I/O |
| Pin 16 | RB1/RX/DT — Bidirectional I/O / USART RX / synchronous data |
| Pin 17 | RB0/TX/CK — Bidirectional I/O / USART TX / synchronous clock |
| Pin 18 | VDD — Positive supply (3.0 V to 5.5 V) |
| Pin 19 | VSS — Ground reference |
| Pin 20 | RC7 — Bidirectional I/O (PORTC bit 7) |
Typical Applications
PIC16F627T-20E/SS is suitable for 6 applications: Appliance Control (Washing Machines, Microwave Ovens), Battery Chargers and Power Management, Remote Controls and Consumer IR Products, Small Industrial Sensors and Transmitters, Automotive Body Electronics (Non-Safety), Low-Cost Consumer Products (Coffee Makers, Fans, Toys).
Appliance Control (Washing Machines, Microwave Ovens)
The PIC16F627T-20E/SS fits white-goods main control boards thanks to its 20 MHz deterministic RISC core, integrated analog comparators for level/temperature sensing, and Extended -40C to +125C temperature grade. The 16 high-current I/O pins can directly sink 25 mA per pin to drive triac optocouplers, relay coils, and seven-segment LED displays without external drivers. The 1.75 KB Flash holds typical wash-cycle or microwave state-machine firmware, while the 128-byte EEPROM stores user settings (selected program, calibration values) that survive power loss. The internal 4 MHz oscillator removes the need for an external crystal, reducing BOM cost by roughly 10 cents per unit and saving PCB space in the compact motor-control compartment where vibration and temperature would stress a discrete resonator.
Recommended
Battery Chargers and Power Management
The PIC16F627T-20E/SS is well matched to closed-loop charger controllers for cordless tools, e-bikes, and small UPS systems. Its two analog comparators with programmable on-chip voltage reference enable direct sensing of battery terminal voltage and charge current without an external ADC; the 20 MHz core runs a CC-CV (constant-current, constant-voltage) state machine in a deterministic 200 ns loop. The 1.75 KB Flash accommodates typical charging profiles for Li-Ion, NiMH, and lead-acid chemistries, while the 128-byte EEPROM logs cycle counts and last-fault codes for warranty tracking. The 20-SSOP package and 3.0 V to 5.5 V supply range allow the same part to operate from a single Li-Ion cell or from a rectified 5 V wall adapter.
Recommended
Remote Controls and Consumer IR Products
The PIC16F627T-20E/SS powers universal remote handsets, toy controllers, and IR-extender receivers thanks to its small 20-SSOP footprint, internal 4 MHz oscillator (eliminating crystal cost), and 14-bit PWM resolution sufficient for IR carrier generation around 38 kHz. The 1.75 KB Flash stores protocol libraries for RC5, NEC, SIRC, and proprietary OEM codes, while the 224-byte RAM buffers incoming UART streams from base stations. Low-power Sleep mode (with WDT wakeup) drops quiescent current below 1 uA, extending battery life in coin-cell and AAA-operated handsets. The 16 I/O pins drive keypad scanning matrices, status LEDs, and the IR emitter transistor directly without a buffer.
Recommended
Small Industrial Sensors and Transmitters
The PIC16F627T-20E/SS is well suited to 4-20 mA loop-powered pressure, temperature, and flow transmitters deployed on factory floors. Its Extended -40C to +125C temperature rating and -40C cold-start capability handle outdoor panel cabinets and unheated enclosures. The internal comparator with programmable VREF digitizes sensor bridges without a dedicated ADC, while the USART module outputs HART, Modbus RTU, or proprietary protocols over the same pair of wires. The 20 MHz core executes linearization, square-root extraction (for differential-pressure flow), and watchdog functions with deterministic timing, critical for SIL-1 industrial loops. The 1.75 KB Flash holds calibration coefficients and unit-tag strings in EEPROM.
Recommended
Automotive Body Electronics (Non-Safety)
The PIC16F627T-20E/SS appears in body-control modules for interior lighting, mirror adjusters, seat controllers, and auxiliary HVAC actuators where AEC-Q100 is not mandated. The Extended -40C to +125C grade covers cabin and trunk temperatures, and the internal oscillator tolerates automotive battery cranking drops down to 3.0 V. The 16 I/O pins drive LIN slave transceivers, LED arrays, and small brushed motors for mirror-fold and seat-positioning mechanisms. The 1.75 KB Flash holds state machines for window anti-pinch and turn-signal feedback, while the 128-byte EEPROM stores last-window position across battery disconnects.
Recommended
Low-Cost Consumer Products (Coffee Makers, Fans, Toys)
The PIC16F627T-20E/SS is a cost-optimized choice for high-volume consumer goods such as drip coffee makers, oscillating fans, kitchen timers, and electronic toys. Its internal 4 MHz oscillator removes the external crystal, reducing BOM cost to roughly 30 cents per board at 1k quantities. The 1.75 KB Flash holds the brew-cycle state machine, button debounce, and seven-segment multiplexing logic; the 16 I/O pins directly drive multiplexed LED digits, triac-switched heater elements, and buzzer PWM tones. The Extended -40C to +125C temperature grade covers the kitchen thermal environment, and the small 20-SSOP footprint fits inside compact plastic enclosures without sacrificing I/O count.
Recommended
Recommended Products Summary
Engineering reference data for PIC16F627T-20E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16F627T-20/SS | PIC16F628AT-20/SS | PIC16F648AT-20/SS | PIC16F627AT-I/SS | PIC16F627A-I/SS |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Flash Program Memory | 1.75 KB (1K x 14) | 1.75 KB | 3.5 KB | 7 KB | 1.75 KB | 1.75 KB |
| RAM | 224 bytes | 224 bytes | 224 bytes | 256 bytes | 224 bytes | 224 bytes |
| EEPROM | 128 bytes | 128 bytes | 128 bytes | 256 bytes | 128 bytes | 128 bytes |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz | 20 MHz |
| Operating Temperature | -40C to +125C (Extended) | 0C to +70C (Commercial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) | -40C to +85C (Industrial) |
| I/O Pins | 16 | 16 | 16 | 16 | 16 | 16 |
| AEC-Q100 Qualified | No | No | No | No | No | No |
Key Differentiators
- Extended -40C to +125C temperature grade for outdoor and under-hood designs (vs PIC16F627T-20/SS)
- More program memory than PIC16F627A without footprint change (vs PIC16F627A-I/SS)
- Deterministic 200 ns instruction cycle from internal 4 MHz oscillator (vs PIC16F628AT-20/SS)
Design Notes
Place a 100 nF ceramic decoupling capacitor within 3 mm of the VDD pin (pin 18) and a 10 uF bulk tantalum or aluminum electrolytic on the same supply trace. According to Microchip's PIC16F62X datasheet, the VDD rise-time must be monotonic to guarantee proper Power-on Reset; a bulk capacitor with ESR under 1 ohm ensures this. For battery applications, add a series ferrite bead on VDD to suppress conducted noise from switching loads sharing the same supply rail.
Reserve RB6/ICSPCLK (pin 11) and RB7/ICSPDAT (pin 10) for in-circuit serial programming access; do not place large capacitors or LED arrays directly on these pins because they will interfere with the programming voltage on MCLR/VPP (pin 3). Route the ICSP connector to the edge of the PCB so a PICKit or ICD programmer can clip on without removing the board from the enclosure. According to Microchip's development tool documentation, MCLR must be tied to VDD through a 10 kohm resistor and pulled to ground through a 100 nF capacitor for proper in-circuit programming.
At maximum clock (20 MHz) and 5.5 V supply, the PIC16F627T-20E/SS dissipates approximately 25 mW internally, well within the SSOP-20 theta_JA of approximately 90 C/W. The junction temperature rises only 2-3 C above ambient, so no special thermal management is required. However, in sealed enclosures without airflow, ambient can climb above 70 C; verify that the Extended -40C to +125C grade still leaves adequate margin for self-heating plus worst-case ambient.
Estimated: at 20 MHz with 5.5 V VDD, the internal oscillator is calibrated at 4 MHz, and the PLL multiplier is not used on the PIC16F627; using the internal 4 MHz RC instead of an external 20 MHz crystal saves cost but adds +/- 1% frequency error over temperature. According to Microchip's datasheet, the OSCCAL register can trim this to within +/- 0.5% at room temperature. For UART communication at 115.2 kbaud, the resulting baud-rate error of approximately 2.5% is acceptable for most protocols but may exceed the +/- 2% budget for CAN or LIN bus timing.
Pin 3 (RA5/MCLR/VPP) is multiplexed with the programming voltage input; if the design uses RA5 as a regular I/O, ensure the MCLR pull-up resistor (typically 10 kohm) does not load the signal when used as output. The Schmitt-trigger input on MCLR requires a rise-time of at least 5 us, so the 100 nF decoupling capacitor and the pull-up together form a 1 ms time constant, comfortably meeting the requirement. According to Microchip's PIC16F62X datasheet, leaving MCLR floating or using too small a pull-up (less than 5 kohm) risks spurious resets in noisy environments.
Compliance Information
RoHS and REACH compliant per Microchip product page. Lead-free matte-tin finish. Extended -40C to +125C temperature grade covers outdoor and under-hood cabin environments but is NOT AEC-Q100 qualified for safety-relevant automotive modules.
