PIC16LC620T-04/SO - 4MHz 8-Bit OTP MCU 18-SOIC | Microchip
料号： PIC16LC620T-04/SO ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $2.85 | $2.85 |
| 10 | $2.56 | $25.60 |
| 100 | $2.28 | $228.00 |
| 500 | $2.04 | $1,020.00 |
| 1,000 | $1.82 | $1,820.00 |
PIC16LC620T-04/SO 概述
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU, program memory (ROM/OTP/Flash), data RAM, and peripheral interfaces on one silicon die. Within the semiconductor hierarchy, MCUs sit inside the broader category of microprocessors and embedded controllers, and the PIC16LC620 belongs specifically to Microchip's PIC16 mid-range family - one of the industry's most widely deployed 8-bit architectures. The 'LC' suffix indicates the low-voltage CMOS process variant optimized for 2.5V-6.25V operation, drawing less current than the standard 'C' parts while supporting battery-powered and portable designs.
Key features include a 4 MHz oscillator, 13 general-purpose I/O pins, a two-level deep hardware stack, and seven or eight special function registers. The PIC16C core uses a RISC instruction set with only 35 single-word instructions, most executing in a single instruction cycle (4 oscillator clocks), giving an effective 1 MIPS throughput at 4 MHz. Addressing modes include direct, indirect, and relative, with on-chip peripherals including a comparator, 8-bit timer/counter, and watchdog timer.
Typical applications include low-cost consumer appliances, automotive body electronics, industrial control subsystems, sensor signal conditioning, and legacy embedded products that require a stable, mature 8-bit MCU with mask-ROM-style code protection. The wide 2.5V-6.25V supply range allows direct operation from a 3.3V regulated rail or a multi-cell battery pack.
When designing with this device, note that OTP memory can be programmed only once - for prototyping use PIC16LC620-04/SO (windowed EPROM) or the flash-based PIC16F628 successor. The 'T' suffix indicates tape-and-reel packaging for high-volume SMT assembly, and the '04' speed grade specifies the 4 MHz maximum clock.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the standalone manufacturer datasheet, helping engineers and procurement teams evaluate sourcing options for legacy PIC16 designs.
直接替换替代料： PIC16LC620T-04/SO ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16LC620T-04/SO （相同外形与封装尺寸） ——差异在于 Operating Temperature Range, Package, Program Memory Size, Program Memory Type, Core Architecture.
快速对比工具——选择替代料号进行并排对比：
PIC16LC620AT-04I/SO
✅ 直接替换✓ 有现货
$1.62 / 个
查看数据手册 →PIC16LC620AT-04E/SO
✅ 直接替换✓ 有现货
$2.25 / 个
查看数据手册 →PIC16LC620A-04I/SO
✅ 直接替换✓ 有现货
$3.96 / 个
查看数据手册 →PIC16LC620A-04E/SO
✅ 直接替换✓ 有现货
$2.07 / 个
查看数据手册 →PIC16LC620A-04/SO
✅ 直接替换✓ 有现货
$2.15 / 个
查看数据手册 →PIC16LC620-04/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC16LC620T-04/SO 最大额定值与电气特性
| Core Architecture | PIC16C 8-bit RISC |
| Program Memory Type | OTP (One-Time Programmable) |
| Program Memory Size | 896 B (512 x 14 words) |
| Maximum Clock Speed | 4 MHz |
| Supply Voltage Range | 2.5 V to 6.25 V |
| Instruction Word Width | 12-bit |
| Data Path Width | 8-bit |
| Number of I/O Pins | 12 to 13 |
| Hardware Stack Depth | 2 levels |
| Special Function Registers | 7 to 8 |
| Package Type | 18-SOIC (0.300 inch body, plastic) |
| 安装类型 | Surface Mount |
| Terminal Form | Gull Wing |
| Temperature Grade | Commercial |
| 工作温度范围 | 0C to +70C (commercial grade) |
| Process Technology | CMOS |
PIC16LC620T-04/SO 引脚配置
| 引脚 1 | MCLR — Master clear (reset) input, active low |
| 引脚 2 | RA0 — PORTA bit 0, digital I/O |
| 引脚 3 | RA1 — PORTA bit 1, digital I/O |
| 引脚 4 | RA2 — PORTA bit 2, digital I/O |
| 引脚 5 | RA3 — PORTA bit 3, digital I/O |
| 引脚 6 | RA4 — PORTA bit 4, digital I/O / T0CKI |
| 引脚 7 | VSS — Ground reference |
| 引脚 8 | RB0 — PORTB bit 0, digital I/O / INT |
| 引脚 9 | RB1 — PORTB bit 1, digital I/O |
| 引脚 10 | RB2 — PORTB bit 2, digital I/O |
| 引脚 11 | RB3 — PORTB bit 3, digital I/O |
| 引脚 12 | RB4 — PORTB bit 4, digital I/O |
| 引脚 13 | RB5 — PORTB bit 5, digital I/O |
| 引脚 14 | RB6 — PORTB bit 6, digital I/O |
| 引脚 15 | RB7 — PORTB bit 7, digital I/O |
| 引脚 16 | VDD — Positive supply voltage |
| 引脚 17 | OSC1 — Oscillator input / external clock |
| 引脚 18 | OSC2 — Oscillator output / clock out |
典型应用
PIC16LC620T-04/SO 适用于 7 应用s: Consumer Appliance Control, Automotive Body Electronics, Industrial Sensor Signal Conditioning, Battery-Powered Portable Devices, Legacy Embedded System Replication, Educational Microcontroller Training, Hobby Electronics and Maker Projects.
Consumer Appliance Control
The PIC16LC620T-04/SO's 2.5V-6.25V supply range and 4 MHz PIC16C core make it ideal for low-cost consumer appliance controllers such as coffee makers, microwave oven user interfaces, and small kitchen devices. The 12-13 GPIO pins directly drive LED indicators, 7-segment displays, and relay coils without external buffers, while the 25 mA per-pin sink capability handles solenoid loads directly. Unlike flash MCUs that double the BOM cost, the OTP variant keeps per-unit cost under $2 in volume. The PIC16C instruction set executes single-cycle instructions in 1 us, providing adequate response time for user-interface debouncing and relay sequencing without timing jitter.
推荐
Automotive Body Electronics
The PIC16LC620T-04/SO serves automotive body modules including seat controllers, window lift switch interfaces, and interior lighting dimmers in legacy vehicle platforms. Its 12-bit instruction set and 8-bit data path deliver deterministic 1 MIPS throughput at 4 MHz, critical for time-multiplexed switch-scanning and PWM dimming tasks. The on-chip comparator monitors battery voltage thresholds, while the 8-bit timer/counter generates precise PWM dimming waveforms for incandescent bulb replacements. The '04' speed grade matches body-electronics timing requirements without the EMI overhead of faster MCUs, and the commercial temperature grade suits cabin-mounted modules.
推荐
Industrial Sensor Signal Conditioning
The PIC16LC620T-04/SO conditions analog sensor signals in industrial 4-20 mA loop transmitters, thermistor linearization circuits, and bridge sensor excitation systems. The on-chip analog comparator with programmable reference provides threshold detection for alarm outputs, while the PIC16C core executes polynomial linearization algorithms in 1 us per instruction. The 2.5V-6.25V supply range allows direct operation from a 3.3V regulated sensor rail or two AA cells in wireless sensor nodes. The 13 GPIO pins handle SPI sensor interfaces, UART diagnostics, and discrete alarm outputs simultaneously.
推荐
Battery-Powered Portable Devices
The PIC16LC620T-04/SO powers battery-operated devices such as remote controls, electronic locks, and wireless sensor end nodes where the LC (low-voltage CMOS) variant's sub-2 mA active current and 1 uA sleep current extend battery life into multi-year ranges. Operating from 2.5V allows direct connection to two alkaline or NiMH cells without boost converters. The 4 MHz core provides ample MIPS for IR protocol encoding/decoding (RC5, NEC, SIRC) and AES-light authentication routines. The OTP memory prevents firmware reverse engineering, protecting proprietary protocols in commercial products.
推荐
Legacy Embedded System Replication
The PIC16LC620T-04/SO is the exact silicon used in legacy products that must continue manufacturing without PCB redesign. Production lines for discontinued but still-supported industrial controllers, medical monitoring accessories, and military spares often require bit-exact replication of original firmware on the same OTP silicon to maintain regulatory certifications. The drop-in compatible PIC16LC620-04/SO variant (tube packaging) supports low-volume legacy orders, while the tape-and-reel 'T' variant feeds high-volume SMT lines. The OTP memory cannot be read back after programming, preserving proprietary firmware confidentiality required for some legacy certifications.
推荐
Educational Microcontroller Training
The PIC16LC620T-04/SO appears in university embedded systems courses and electronics training kits where the PIC16C architecture's 35-instruction RISC set teaches fundamental MCU concepts without the complexity of modern Cortex-M peripherals. The 4 MHz operation allows students to observe instruction cycle timing on oscilloscopes, while the 18-SOIC package through-hole-adapter boards simplifies breadboard prototyping. The OTP memory encourages proper pre-programming verification using PIC16C620-04/SO EPROM-windowed variants, teaching professional firmware validation workflows. The 2.5V-6.25V supply range allows direct USB-5V or 3.3V operation from modern lab power supplies.
推荐
Hobby Electronics and Maker Projects
The PIC16LC620T-04/SO supports hobbyist projects requiring code protection such as custom game controllers, MIDI footswitches, and standalone musical instrument controllers where designers want to prevent firmware cloning. The 13 GPIO pins drive NeoPixel data lines, button matrices, and 7-segment displays, while the on-chip comparator handles audio envelope detection. The PIC16C instruction set is well documented in community resources, and Microchip's MPLAB IDE supports the device alongside modern PIC16F successors. The OTP memory requirement pushes makers toward PIC16F628 for iterative development, then PIC16LC620 for final code-locked production units.
推荐
推荐产品汇总
工程参考数据： PIC16LC620T-04/SO ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16LC620AT-04I/SO | PIC16LC620AT-04E/SO | PIC16LC620A-04I/SO | PIC16LC620A-04E/SO | PIC16LC620A-04/SO | PIC16LC620-04/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-SOIC | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same | 18-SOIC - same |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Program Memory | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP | 896 B OTP |
| Supply Voltage Range | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V |
| Temperature Grade | Commercial | Industrial (-40C to +85C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Extended (-40C to +125C) | Commercial | Commercial |
| Silicon Revision | Original | 'A' revision (errata fixed) | 'A' revision (errata fixed) | 'A' revision (errata fixed) | 'A' revision (errata fixed) | 'A' revision (errata fixed) | Original |
| Packaging Format | Tape & Reel | Tape & Reel | Tape & Reel | Tube | Tube | Tube | Tube |
| I/O Pin Count | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 | 12 to 13 |
关键差异点
- OTP code protection for proprietary firmware （对比 PIC16F628-I/SO (flash MCU))
- Low-voltage CMOS operation down to 2.5V （对比 PIC16C620-04/SO (standard CMOS))
- Tape-and-reel packaging for SMT assembly （对比 PIC16LC620-04/SO (tube packaging))
- Single-chip integration reduces BOM （对比 PIC16F628 + external EEPROM)
设计说明
The PIC16LC620T-04/SO operates from 2.5V to 6.25V per the Microchip datasheet, allowing direct connection to a 3.3V regulated rail or a 5V USB supply without level shifting. Add a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 16) and a 10 uF bulk capacitor at the board power entry. The LC variant's sub-2 mA active current and 1 uA sleep current enable multi-year battery life from two AA cells when using sleep modes between sensor readings. Always include a power-on reset delay by holding MCLR low for at least 72 ms after VDD stabilizes to ensure proper oscillator startup.
The PIC16LC620T-04/SO uses One-Time Programmable (OTP) memory that can be written exactly once - there is no erasing or reprogramming capability. Per Microchip documentation, OTP programming requires a high-voltage VPP of approximately 13V on the MCLR pin during the programming sequence, applied only by an approved programmer such as MPLAB PM3. For development and prototyping, use the PIC16C620-04/SO (EPROM windowed) variant or migrate to the flash-based PIC16F628-I/SO drop-in replacement. Programming the original (non-'A' revision) silicon requires checking silicon errata DS30244 for known comparator output routing issues.
Place the 18-SOIC PIC16LC620T-04/SO with pin 1 oriented to match the dot marker on the package, and keep the 4 MHz crystal or resonator within 10 mm of the OSC1 (pin 17) and OSC2 (pin 18) pins to minimize parasitic capacitance. Use short, direct traces for the MCLR pull-up resistor (typically 10 kOhm to VDD) to ensure clean reset behavior. Per Microchip layout guidelines, surround the crystal traces with a ground guard ring and keep digital switching traces away from the OSC1/OSC2 pins to prevent clock jitter. RB6 and RB7 serve as in-circuit serial programming (ICSP) clock and data pins - route these to an accessible header for factory programming.
The PIC16LC620T-04/SO operates at 4 MHz with 1 MIPS throughput, making signal integrity concerns minimal compared to high-speed MCUs. However, when using the on-chip analog comparator for sensor threshold detection, isolate the analog input traces (typically RA0-RA3) from digital switching signals on RB4-RB7. Add a 100 ohm series resistor and 10 nF capacitor on the comparator input for low-pass filtering of high-frequency noise. Per the PIC16C62X datasheet, the comparator response time is approximately 200-400 ns, so debounce input signals in software rather than relying on analog filtering alone.
合规信息
RoHS compliance per Microchip product page. Lead-free (Pb-free) reflow-compatible. AEC-Q100 not applicable for commercial-grade MCU; industrial-grade variants (PIC16LC620AT-04I/SO) may have different qualification status - verify with Microchip datasheet for automotive applications.
