PIC16LC57C-04/SO - 8-Bit 4MHz OTP MCU 3KB | 28-SOIC
MPN: PIC16LC57C-04/SO ✓ Hoạt độngPIC16LC57C-04/SO Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, non-volatile program memory, working RAM, and peripheral I/O on one die, enabling compact embedded designs. The PIC16C5X family is part of the broader 8-bit microcontroller taxonomy: microcontroller -> embedded controller -> CMOS microcomputer -> semiconductor IC. Within Microchip's portfolio it sits at the entry-level / cost-optimized branch beneath the PIC16F and PIC18 families, favored for high-volume cost-sensitive applications.
Key features of the PIC16LC57C-04/SO include a 12-bit instruction word with 33 single-cycle instructions, an 8-bit data path, a hardware watchdog timer, a power-on reset (POR) circuit, and an internal RC oscillator option that lets the device operate without an external crystal. The OTP program memory allows one-time programming in production, lowering unit cost compared to flash parts for mature, fixed-code designs. The wide 2.5V-6.0V VDD range suits both 3.3V and 5V systems.
Architecturally, the PIC16LC57C uses a Harvard-style RISC core with separate program and data buses, two 8-bit I/O ports (RA, RB) and two additional I/O lines on PORTC, plus a 5-channel 8-bit ADC on selected siblings. The "C" suffix denotes the CMOS-process revision that delivers low quiescent current versus the older NMOS "B" die, and the "LC" prefix indicates the low-voltage (2.5V min) variant suitable for battery operation. The "-04" speed grade indicates a 4 MHz maximum oscillator frequency.
Typical applications include appliance controls, remote keyless entry, smart sensors, low-end user-interface boards, battery-powered instruments, and simple motor-control front ends. Industrial designers often select this part for its wide supply range, robust I/O count (20 pins), and low unit cost.
When designing with the PIC16LC57C-04/SO, ensure that your code fits within the 2K x 12 program memory and that the 20 I/O pins cover your signal requirements; the OTP memory means firmware changes require device replacement, so design final-code images only.
This page synthesizes distributor pricing from DigiKey, LCSC, and Heisener, pin-compatible drop-in alternatives, and engineering design notes not found on any single distributor listing.
Bộ thay thế dễ dàng lắp đặt cho PIC16LC57C-04/SO — 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 PIC16LC57C-04/SO (cùng hình factor và footprint) — khác nhau ở Core Architecture, Program Memory Size, Instruction Set, Operating Temperature Range, Package.
PIC16LC57C-04/SP
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C57C-04/SO
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
PIC16LC57C-04I/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F57-I/SO
✅ Drop-In✗ Hết hàng
$1.21 / Đơn vị
Xem tài liệu →PIC16LC56A-04/SO
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16LC57C-04/SO Tỷ lệ tối đa & tính chất điện
| Product Type | 8-bit RISC Microcontroller (MCU) |
| Core Architecture | PIC16C5X Harvard RISC |
| Instruction Set | 33 single-cycle instructions, 12-bit wide |
| Tần số xung maksimum | 4 MHz |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 3 KB (2K x 12) |
| Data RAM | 72 bytes |
| I/O Pins | 20 |
| Supply Voltage (VDD) | 2.5 V to 6.0 V |
| Nhiệt độ hoạt động | 0C to +70C (commercial) |
| Hộp | 28-SOIC (0.295", 7.50 mm width) |
| Kiểu lắp đặt | Surface Mount |
| Watchdog Timer | Yes (hardware WDT) |
| Power-On Reset (POR) | Yes |
| Internal Oscillator | Yes (RC option, external crystal also supported) |
| Speed Grade | -04 (4 MHz) |
Cấu hình chân PIC16LC57C-04/SO
| Chân 1 | RA2 — Bidirectional I/O port A bit 2 |
| Chân 2 | RA3 — Bidirectional I/O port A bit 3 |
| Chân 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / Timer0 clock input |
| Chân 4 | MCLR — Master Clear (active-low reset input) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0/INT — Bidirectional I/O port B bit 0 / External interrupt |
| Chân 7 | RB1 — Bidirectional I/O port B bit 1 |
| Chân 8 | RB2 — Bidirectional I/O port B bit 2 |
| Chân 9 | RB3 — Bidirectional I/O port B bit 3 |
| Chân 10 | RB4 — Bidirectional I/O port B bit 4 |
| Chân 11 | RB5 — Bidirectional I/O port B bit 5 |
| Chân 12 | RB6 — Bidirectional I/O port B bit 6 |
| Chân 13 | RB7 — Bidirectional I/O port B bit 7 |
| Chân 14 | VSS — Ground reference |
| Chân 15 | OSC1/CLKIN — Oscillator input / external clock input |
| Chân 16 | OSC2/CLKOUT — Oscillator output / clock output |
| Chân 17 | RC0 — Bidirectional I/O port C bit 0 |
| Chân 18 | RC1 — Bidirectional I/O port C bit 1 |
| Chân 19 | RC2 — Bidirectional I/O port C bit 2 |
| Chân 20 | RC3 — Bidirectional I/O port C bit 3 |
| Chân 21 | RC4 — Bidirectional I/O port C bit 4 |
| Chân 22 | RC5 — Bidirectional I/O port C bit 5 |
| Chân 23 | RC6 — Bidirectional I/O port C bit 6 |
| Chân 24 | RC7 — Bidirectional I/O port C bit 7 |
| Chân 25 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 26 | RA1 — Bidirectional I/O port A bit 1 |
| Chân 27 | VDD — Positive supply voltage |
| Chân 28 | VDD — Positive supply voltage |
Ứng dụng tiêu biểu
PIC16LC57C-04/SO phù hợp cho 6 Áp dụngs: Appliance Control Boards, Remote Keyless Entry (RKE), Smart Sensor Interfaces, Battery-Powered Instruments, User Interface Boards (Keypads / Displays), Simple Motor Control Front Ends.
Appliance Control Boards
The PIC16LC57C-04/SO fits appliance control boards such as washing-machine front panels, microwave keypads, and dishwasher timers where cost dominates and firmware is finalized. With 3 KB of OTP program memory, 20 I/O pins, and a 4 MHz instruction cycle, the part scans key matrices, drives LED or 7-segment displays, and reads temperature sensors with millisecond response. The 2.5V-6.0V LC supply range lets the same board run from a 3.3V regulator or a 5V rectified-rail supply. Real-world washing-machine designs cite PIC16C5X for sub-$1 MCU cost in high-volume SKUs.
Được đề xuất
Remote Keyless Entry (RKE)
The PIC16LC57C-04/SO is well-suited for remote keyless entry fobs and small battery-powered transmitters where standby current and unit cost dominate. The CMOS "C" process revision and 2.5 V minimum VDD let the part idle in the microamp range on a CR2032 cell for years. Its 4 MIPS instruction throughput is more than adequate to encode a 40-bit rolling-code transmission via ASK or FSK at 315/433 MHz using a small SAW-resonator transmitter companion. 20 I/O can drive 4-5 buttons plus an LED indicator.
Được đề xuất
Smart Sensor Interfaces
The PIC16LC57C-04/SO acts as a smart-sensor interface MCU for HVAC, building automation, and environmental monitors. Its 20 I/O pins read thermistor bridges, photo-diodes, and 4-20 mA loops while its on-chip watchdog timer (WDT) recovers the part from sensor-line glitches. With 72 bytes of RAM the firmware can buffer a few calibration samples before UART or PWM retransmission to a host controller. The industrial-temp -I variant survives outdoor enclosures.
Được đề xuất
Battery-Powered Instruments
The PIC16LC57C-04/SO is a natural fit for handheld multimeters, portable thermometers, and consumer battery-powered test gear where low-voltage operation and low BOM cost matter most. The 2.5 V minimum VDD lets a 2x AA or 2x AAA battery stack power the entire board down to the brown-out threshold, and the SLEEP-plus-WDT wake mode can extend battery life to years of standby. 20 I/O drive LCD segments directly via the 4-bit port pattern common in PIC16C5X firmware libraries.
Được đề xuất
User Interface Boards (Keypads / Displays)
The PIC16LC57C-04/SO serves as the controller for low-end user-interface boards such as security keypads, microwave ovens, and thermostat displays. Its 20 I/O pins scan a 4x4 matrix keypad while simultaneously driving a 4-digit 7-segment LED or a character LCD via software. The RISC instruction set completes a full key-debounce cycle in well under 1 ms at 4 MHz, and the wide 2.5V-6.0V VDD range lets the same firmware run on 3.3 V LCD or 5 V VFD displays.
Được đề xuất
Simple Motor Control Front Ends
The PIC16LC57C-04/SO works as a low-cost front-end controller for small brushed-DC and unipolar stepper motor drives in fans, blinds, and small pumps. Its 20 I/O can source/sink the gate-drive signals for low-side MOSFET switches, while its hardware watchdog recovers from motor-stall-induced brownouts. At 4 MIPS, the firmware can implement a basic PID loop on a Hall-effect sensor input and update PWM duty every 5 ms - sufficient for low-bandwidth thermal or position control.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16LC57C-04/SO — 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 | PIC16LC57C-04/SP | PIC16C57C-04/SO | PIC16LC57C-04I/SO | PIC16F57-I/SO | PIC16LC56A-04/SO |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (SO) | 28-PDIP (SP) - different PCB footprint, not 28-SOIC | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same | 28-SOIC (SO) - same |
| Program Memory | 3 KB OTP (2K x 12) | 3 KB OTP (2K x 12) | 3 KB OTP (2K x 12) | 3 KB OTP (2K x 12) | 3 KB Flash (2K x 12) | 1 KB OTP (1K x 12) |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz |
| Data RAM | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes | 72 bytes |
| I/O Pins | 20 | 20 | 20 | 20 | 20 | 16 |
| Supply Voltage (VDD) | 2.5 V to 6.0 V | 2.5 V to 6.0 V | 3.0 V to 6.0 V (C variant, no LC low-voltage) | 2.5 V to 6.0 V | 2.0 V to 5.5 V | 2.5 V to 6.0 V |
| Operating Temperature | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C (commercial) |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | Flash (re-programmable) | OTP EPROM |
Bảo phân biệt quan trọng
- Low-voltage 2.5 V VDD support in the same 28-SOIC footprint (vsPIC16C57C-04/SO)
- Industrial -40C to +85C temperature option in the same 28-SOIC (vsPIC16LC57C-04/SO (commercial 0C to +70C))
- Flash memory upgrade path with 5x clock headroom (vsPIC16F57-I/SO)
Ghi chú thiết kế
Estimated: At VDD=5.0 V and active mode at 4 MHz, the PIC16LC57C-04/SO draws roughly 2 mA active and under 1 uA in SLEEP. Always place a 100 nF decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor on the main supply rail. If the design also powers a transmitter or relay, add a TVS diode across VDD to clamp inductive transients below the 6.0 V absolute-maximum rating.
Per Microchip PIC16C5X layout guidelines, place the 28-SOIC footprint with the standard 1.27 mm pitch and 0.65 mm lead span. Route the oscillator traces (OSC1, OSC2) as short as possible and surround them with a ground pour to minimize EMI coupling into the ADC or comparator pins. MCLR should have a 10 kohm pull-up to VDD and a 100 nF cap to ground for clean reset - omit the cap only if you never rely on internal Power-On Reset timing.
OTP memory means you cannot reprogram the PIC16LC57C-04/SO in-circuit: every firmware revision requires a new part. For prototype development choose the PIC16F57-I/SO (Flash) instead. Also note that the WDT is enabled by configuration bit and may need to be cleared in the configuration word if not used - a stale WDT reset is one of the most common field-return causes. Verify the configuration word in your programmer software before locking the device.
Thông tin tuân thủ
RoHS, REACH, lead-free, and halogen-free status were not stated in the verified web data. The part is a commercial-grade MCU not qualified to AEC-Q100 (automotive); use PIC16LC57C-04I/SO for industrial temperature grade.
