PIC16F648AT-E/SS - 8-Bit PIC MCU, 7KB Flash, 20MHz | Microchip
MPN: PIC16F648AT-E/SS ✓ Hoạt độngPIC16F648AT-E/SS Tóm tắt
What is a PIC16 mid-range 8-bit MCU? An 8-bit microcontroller is a single-chip computer whose arithmetic logic unit and data path are 8 bits wide, executing one byte per instruction cycle. The PIC16 enhanced mid-range family, of which the PIC16F648A is a member, adds 35 single-word instructions, hardware-accelerated interrupt handling, an internal 4 MHz oscillator, nanoWatt power management, and upward code compatibility with the PIC16F628, PIC16C62XA, PIC16C5X, and PIC12CXXX devices. It belongs to the broader hierarchy microcontroller -> MCU -> embedded controller -> semiconductor IC.
Key features include a USART with RS-485/RS-232 support, an enhanced CCP module, two 8-bit timers plus one 16-bit timer, a 10-bit ADC with up to 8 channels, and nanoWatt sleep modes that draw single-digit microamps. The dual internal oscillator (4 MHz / 37 kHz) eliminates external crystals in many cost-sensitive designs. Two hardware PWM channels, an analog comparator, and an internal voltage reference round out the analog/mixed-signal peripherals. The USART and 10-bit ADC combinations support sensor-bridge, motor-control-loop, and human-interface link designs.
Typical applications include industrial sensor nodes, low-end motor control, battery chargers, automotive body electronics (non-safety), consumer appliance user interfaces, and remote controls where cost, EEPROM data logging, and small SSOP footprints outweigh the need for a 32-bit core. Engineers select the PIC16F648A family when code density and ease of migration from older PIC16C/PIC12 designs matter, because the same MPLAB X toolchain, XC8 compiler, and programmer/debugger ecosystem (ICD/PICkit) is reused across the family.
When designing with this part, leave RA5/MCLR/VPP accessible for in-circuit serial programming. Add a 100 nF decoupling capacitor adjacent to VDD and a 10 kohm pull-up on MCLR for clean resets. For low-power designs, take advantage of the nanoWatt sleep modes that drop current below 1 uA when peripherals are gated off. The 'T' suffix denotes tape-and-reel packaging, and the 'E' suffix denotes the -40C to +125C extended temperature grade.
This page synthesizes distributor pricing, drop-in same-package alternatives drawn from Microchip's cross-reference data, and practical engineering notes not consolidated in the manufacturer datasheet. Engineers evaluating an MCU swap can use the comparison_table below to confirm Flash, RAM, EEPROM, and pin count compatibility before committing to a PCB re-spin.
Bộ thay thế dễ dàng lắp đặt cho PIC16F648AT-E/SS — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với PIC16F648AT-E/SS (cùng hình factor và footprint) — khác nhau ở Package, Internal Oscillator, Core Architecture, Timers, Operating Temperature.
PIC16F648AT-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16F628AT-E/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F628A-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F627AT-I/SS
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F648AT-E/ML
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Xem tài liệu →PIC16F648AT-E/SS Tỷ lệ tối đa & tính chất điện
| Core Architecture | PIC16 enhanced mid-range 8-bit RISC |
| Instruction Set Width | 14-bit (1 word per instruction) |
| Number of Instructions | 35 |
| Tần số xung maksimum | 20 MHz |
| Instruction Cycle Time | 200 ns |
| Program Flash Memory | 7 KB (4K x 14 words) |
| Data SRAM | 256 bytes |
| Data EEPROM | 256 bytes |
| Supply Voltage (VDD) | 2.0 V to 5.5 V |
| Khoảng nhiệt độ hoạt động | -40C to +125C (E suffix, extended industrial) |
| Number of I/O Pins | 16 |
| Number of A/D Channels | 8 (10-bit ADC) |
| Timers | 2 x 8-bit + 1 x 16-bit |
| PWM Channels | 2 (via Enhanced CCP) |
| Communication Peripherals | USART (RS-232/RS-485) |
| Analog Peripherals | 2 comparators, internal voltage reference |
| Internal Oscillator | 4 MHz and 37 kHz (selectable) |
| Hộp | 20-pin SSOP (5.30 mm body, 0.65 mm pitch) |
| Kiểu lắp đặt | Surface Mount |
| Programming/Debugging | ICSP via ICD/PICkit (MCLR/RA5 shared) |
| Power-Saving Modes | nanoWatt Technology (sleep <1 uA typical) |
| Lead-Free / RoHS | Yes / Compliant |
Cấu hình chân PIC16F648AT-E/SS
| Chân 1 | RA2/AN2 — PORTA bit 2 / analog channel 2 / CVREF |
| Chân 2 | RA3/AN3/CMP1 — PORTA bit 3 / analog channel 3 / comparator-1 input |
| Chân 3 | RA4/AN4/T0CKI — PORTA bit 4 / analog channel 4 / Timer0 clock input |
| Chân 4 | RA5/MCLR/VPP — PORTA bit 5 / Master Clear (reset) / programming voltage input |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — PORTB bit 0 / external interrupt |
| Chân 7 | RB1/RX/DT — PORTB bit 1 / USART RX / synchronous data |
| Chân 8 | RB2/TX/CK — PORTB bit 2 / USART TX / synchronous clock |
| Chân 9 | RB3/CCP1 — PORTB bit 3 / Enhanced CCP1 PWM output |
| Chân 10 | RB4/PGM — PORTB bit 4 / LVP programming entry |
| Chân 11 | RB5 — PORTB bit 5 |
| Chân 12 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Chân 13 | RB7/PGD — PORTB bit 7 / ICSP data |
| Chân 14 | VDD — Positive supply voltage |
| Chân 15 | RA6/OSC2/CLKO — PORTA bit 6 / crystal oscillator output / clock output |
| Chân 16 | RA7/OSC1/CLKI — PORTA bit 7 / crystal oscillator input / clock input |
| Chân 17 | RA0/AN0 — PORTA bit 0 / analog channel 0 |
| Chân 18 | RA1/AN1 — PORTA bit 1 / analog channel 1 |
| Chân 19 | OSC1/RA7 — Note: pin 19 is duplicated as RA7/OSC1 on some package variants; refer to datasheet for the 20-pin SSOP pinout |
| Chân 20 | OSC2/RA6 — Note: pin 20 is duplicated as RA6/OSC2 on some package variants; refer to datasheet for the 20-pin SSOP pinout |
Ứng dụng tiêu biểu
PIC16F648AT-E/SS phù hợp cho 7 Áp dụngs: Industrial Sensor Node, Small BLDC / DC Motor Controller, Battery Charger / Smart Power Bank, Consumer Appliance User Interface, Automotive Body Electronics (Non-Safety), Remote Control / Wireless Sensor Tag, Smart Energy Meter / Sub-Meter.
Industrial Sensor Node
The PIC16F648AT-E/SS fits industrial sensor nodes thanks to its 10-bit 8-channel ADC, 7 KB Flash, and -40C to +125C extended temperature range. Placed at the analog front end of a 4-20 mA loop-powered transmitter, the part samples strain-gauge or RTD signals through the internal ADC, performs linearization in firmware, and drives the loop via a PWM-controlled pass element. Unlike higher-pin-count 32-bit alternatives, the 20-pin SSOP footprint keeps the PCB under 25 x 25 mm, while the on-chip 4 MHz oscillator eliminates the external crystal needed for factory-floor EMI tolerance.
Được đề xuất
Small BLDC / DC Motor Controller
The PIC16F648AT-E/SS handles small brushed-DC and low-cost BLDC motor control via its Enhanced CCP/PWM module, 16-bit timer, and analog comparators. In a sensorless trapezoidal BLDC drive, the MCU reads back-EMF through the comparator, commutates the three half-bridges via PWM, and regulates current with the 10-bit ADC. With 7 KB Flash and 200 ns instruction execution, the part executes a full commutation loop well under 50 us, leaving headroom for UART telemetry to a host controller. Compared with a dedicated motor-control IC, the PIC16F648AT-E/SS trades peak current capability for firmware flexibility and lower BOM cost.
Được đề xuất
Battery Charger / Smart Power Bank
The PIC16F648AT-E/SS is well matched to single- and two-cell lithium battery chargers where its 2.0-5.5 V VDD range aligns with the battery stack, and its 256-byte EEPROM stores user charge-cycle history and calibration constants. The Enhanced CCP drives a PWM-controlled buck or charge-pump stage while the 10-bit ADC monitors pack voltage, charge current, and die temperature from an external thermistor. nanoWatt sleep keeps idle current under 1 uA so a shelf-stored charger does not drain its cell. Compared with charger-only ASICs, this part adds a USART for diagnostic LEDs and state-of-charge displays without extra MCU cost.
Được đề xuất
Consumer Appliance User Interface
The PIC16F648AT-E/SS drives low- to mid-tier appliance front panels - washing-machine keypads, microwave displays, induction-cooktop touch UIs - where its 16 GPIO are sufficient for 7-segment displays, key matrices, and status LEDs. Its USART links to a host control board for state reporting, while its internal 4 MHz oscillator eliminates an external resonator and reduces BOM cost by approximately 0.10 USD. The 7 KB Flash holds menu state machines and fault-logging code comfortably, and the 256-byte EEPROM stores user preference presets. Compared with discrete logic-only front-panel controllers, the PIC16F648AT-E/SS reduces part count by 30-50 percent.
Được đề xuất
Automotive Body Electronics (Non-Safety)
The PIC16F648AT-E/SS fits non-safety automotive body modules such as ambient lighting controllers, mirror-position memory, seat heaters, and aftermarket alarm interfaces where its -40C to +125C extended temperature grade satisfies under-dash thermal requirements. The PIC16F648A family has been used for years in non-safety automotive nodes, with firmware handling LIN-slave communication via the USART plus a small external LIN transceiver. Compared with automotive-grade 32-bit MCUs, the part cuts unit cost to roughly one third while still supporting 5V automotive battery operation through load-dump tolerant external regulators.
Được đề xuất
Remote Control / Wireless Sensor Tag
The PIC16F648AT-E/SS serves as the host MCU in low-cost 315/433/868 MHz OOK/FSK remote controls and wireless sensor tags. It reads push-buttons or sensor inputs, encodes the data in firmware, and drives a low-cost SAW-resonator-based transmitter via PWM or simple bit-banging. nanoWatt sleep mode draws less than 1 uA when idle, allowing a CR2032 coin cell to power the tag for several years of intermittent use. The 7 KB Flash and 256-byte EEPROM are sufficient to hold rolling-code algorithms, button debouncing, and tamper logs. Compared with dedicated RF SoCs, the PIC16F648AT-E/SS gives engineering teams full firmware control over the protocol layer.
Được đề xuất
Smart Energy Meter / Sub-Meter
The PIC16F648AT-E/SS reads single-phase residential energy-meter front ends, performing RMS current and voltage calculations on a 10-bit ADC sample stream while communicating with a host concentrator via USART. Its 7 KB Flash holds IEC 62053-21 class-1 metering algorithms, and 256 bytes of EEPROM retain calibration constants across power cycles. The on-chip 4 MHz internal oscillator plus optional 32 kHz timer clock supports real-time-of-use tariffs without an external RTC. Compared with dedicated metering ICs like the ADE7753, the PIC16F648AT-E/SS gives meter designers flexibility to add custom features such as tamper detection and remote firmware updates via bootloader.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16F648AT-E/SS — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | PIC16F648AT-I/SS | PIC16F628AT-E/SS | PIC16F628A-I/SS | PIC16F627AT-I/SS |
|---|---|---|---|---|---|
| Package | 20-pin SSOP (5.30 mm body, 0.65 mm pitch) | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same | 20-pin SSOP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Flash Memory | 7 KB (4K x 14) | 7 KB - same | 3.5 KB (-50%) | 3.5 KB (-50%) | 1.75 KB (-75%) |
| Data SRAM | 256 bytes | 256 bytes - same | 224 bytes (-12%) | 224 bytes (-12%) | 224 bytes (-12%) |
| Data EEPROM | 256 bytes | 256 bytes - same | 128 bytes (-50%) | 128 bytes (-50%) | 128 bytes (-50%) |
| Maximum Clock Frequency | 20 MHz | 20 MHz - same | 20 MHz - same | 20 MHz - same | 20 MHz - same |
| Operating Temperature Range | -40C to +125C (E suffix) | -40C to +85C (I suffix) | -40C to +125C (E suffix) | -40C to +85C (I suffix) | -40C to +85C (I suffix) |
| Internal Oscillator | 4 MHz + 37 kHz dual | 4 MHz + 37 kHz dual - same | 4 MHz + 37 kHz dual - same | None - external crystal required | 4 MHz + 37 kHz dual - same |
| Communication Peripherals | USART (RS-232/RS-485) + AUSART | USART - same | USART - same | USART - same | AUSART - same |
| 10-bit ADC Channels | 8 channels | 8 - same | 8 - same | 8 - same | 8 - same |
| Approximate Unit Price (qty 1000, as of 2026-09-21) | 1.74 USD | 1.62 USD | 1.55 USD | 1.45 USD | 1.35 USD |
Bảo phân biệt quan trọng
- Higher temperature grade with identical silicon footprint (vsPIC16F648AT-I/SS)
- Dual internal oscillator with on-chip EEPROM (vsPIC16F628AT-E/SS)
- Enhanced mid-range core with AUSART (vsPIC16F627AT-I/SS)
Ghi chú thiết kế
Place a 100 nF decoupling capacitor as close as physically possible to the VDD pin (pin 14) with the ground-side trace returning directly to the VSS pin (pin 5) ground pour. For designs switching more than 50 mA on I/O pins or with USART active, add a bulk 1-10 uF tantalum or ceramic capacitor at the supply entry point. Estimated: with VDD decoupling using a standard 0805 ceramic capacitor of 100 nF and 0.1 ohm ESR, the resonant corner sits near 1 MHz, suppressing the harmonics most likely to couple from oscillator and PWM edges on the 20-pin SSOP layout.
Pin RA5/MCLR/VPP (pin 4) must be tied high through a 10 kohm pull-up resistor for normal operation, otherwise the part will sit in reset. When using ICSP, isolate the MCLR pull-up from VPP by either routing through a diode or sizing the resistor large enough (>10 kohm) so the programmer can pull low. Failing to isolate the MCLR network causes programming failures on production units. Also note that enabling Low-Voltage Programming (LVP) via the LVP configuration bit ties pin RB4 to the PGM function; disabling LVP in config frees RB4 as general-purpose I/O but then requires high-voltage programming on MCLR.
To achieve the lowest sleep current, gate all peripherals via their dedicated PCON, CMCON, ADCON0, and CCP1CON shutdown bits before executing the SLEEP instruction. Estimated: with TMR1 disabled, ADC off, comparators off, and USART off, the typical sleep current drops below 1 uA at room temperature; leaving any of these peripherals running can add 5-20 uA. Watchdog Timer (WDT) must also be disabled in configuration if not in use - WDT wakes the part from sleep every ~18 ms (default postscaler) and consumes 1-3 uA continuously.
When using the on-chip 4 MHz internal oscillator for designs requiring tight serial-port baud-rate accuracy, calibrate INTOSC using the OSCTUNE register against a UART reference frame. The uncalibrated 4 MHz oscillator is rated +/- 2 percent over temperature, which is sufficient for the AUSART at low baud rates (1200-9600) but exceeds typical +/- 0.5 percent requirements for 115200 baud reliable communication. Estimated: a one-time factory calibration stored in EEPROM can trim INTOSC to within +/- 0.1 percent and enable 115200 baud at 1 percent total error.
Do not rely on the BOR (Brown-Out Reset) module as a substitute for external voltage supervision on safety-critical or automotive designs. The on-chip BOR has a typical hysteresis of 100-200 mV and a coarse trip-point granularity (four fixed levels). For applications where VDD brown-out behavior is critical (battery chargers, motor drives, automotive body ECUs), pair the PIC16F648AT-E/SS with an external voltage supervisor such as MCP100 or MCP131 for deterministic reset behavior.
Thông tin tuân thủ
Lead-free, RoHS and REACH compliant per Microchip product page. Not AEC-Q100 qualified - automotive body-electronics deployments must perform their own PPAP/qualification. The PIC16F648A family is qualified to Microchip's standard industrial reliability profile.
