PIC16LC622-04I/P - 4MHz 8-Bit CMOS MCU, 3.5KB OTP | Microchip
MPN： PIC16LC622-04I/P ✓ 啟用中PIC16LC622-04I/P 概覽
An 8-bit microcontroller is a single-chip computer built around an 8-bit data path, integrating a CPU, RAM, non-volatile program memory, and peripherals such as timers, interrupts, and I/O ports on a single die. The PIC16LC622 sits within the broader taxonomy as: microcontroller -> 8-bit MCU -> PIC16 family -> PIC16C sub-family -> CMOS EPROM-based device -> semiconductor IC. This LC variant is the low-power CMOS process version (vs. the PIC16C622 EPROM die), typically offering wider operating voltage and lower quiescent current than the original PIC16C62x parts.
Key features of the PIC16LC622-04I/P include 12-bit wide instructions, an 8-bit wide data path, seven or eight special-function hardware registers, a two-level deep hardware stack, and direct, indirect, and relative addressing modes. The '04' speed grade indicates 4 MHz maximum oscillator input, and the 'I' suffix denotes the industrial temperature range of -40 °C to +85 °C. Supply voltage is specified at 2.5 V to 6.25 V, enabling operation from two or three alkaline cells up to a regulated 5 V rail.
Architecturally, the PIC16LC622 is built on Microchip's classic Harvard RISC core, which fetches instructions from program memory on a separate bus from data, allowing most instructions to execute in a single instruction cycle (4 oscillator clocks). The OTP program memory means the firmware is permanently written once at programming time and cannot be electrically erased, making this part a cost-optimized choice for mature, stable production designs rather than iterative prototyping.
Typical applications include low-power and cost-sensitive embedded control such as consumer appliances, automotive body electronics (interior lighting, seat controllers, small sensor interfaces), industrial control (sensor signal conditioning, simple closed-loop control), battery-powered instrumentation, and remote-control transmitters. The 13 I/O pins are sufficient for driving LEDs, reading buttons, communicating via UART or I²C through software bit-banging, and interfacing low-speed analog signals.
When designing with this device, ensure the chosen oscillator or resonator is within the 4 MHz maximum and that decoupling capacitors are placed close to VDD/VSS pins. Because OTP parts cannot be re-programmed, developers typically use a windowed (JW) or flash equivalent for code development and switch to the OTP 'P' (PDIP) variant for production runs.
直接替換替代品，適用於 PIC16LC622-04I/P — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： PIC16LC622-04I/P （相同外形與佔位） — 差異在於 Package, Operating Temperature Range, Core Architecture, Program Memory Type, Timers.
PIC16LC621A-04I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LC620A-04I/P
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
PIC16C622-04I/P
✅ 直接替換📋 參考替代品（不在目錄中）
PIC16F628-04I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16F84A-04I/P
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →PIC16LC622-04I/P 最大額定值與電氣特性
| Core Architecture | PIC 8-bit Harvard RISC |
| Family | PIC® 16C |
| Program Memory Type | OTP (One-Time-Programmable) EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 bytes |
| Maximum Clock Speed | 4 MHz |
| Instruction Word Width | 12 bits |
| Data Path Width | 8 bits |
| I/O Pins | 13 |
| Supply Voltage (VDD) | 2.5 V to 6.25 V |
| 工作溫度範圍 | -40 °C to +85 °C (Industrial, 'I' suffix) |
| 封裝 | 18-pin PDIP (0.300 inch, 7.62 mm) |
| 安裝類型 | Through-Hole |
| Hardware Stack | 2 levels deep |
| Addressing Modes | Direct, Indirect, Relative |
| RoHS 狀態 | Compliant |
PIC16LC622-04I/P 腳位配置
| 腳位 1 | MCLR/VPP — Master-clear reset (active low) / programming voltage input |
| 腳位 2 | RA0 — Port A bit 0 (digital I/O) |
| 腳位 3 | RA1 — Port A bit 1 (digital I/O) |
| 腳位 4 | OSC1/CLKIN — Oscillator input / external clock input |
| 腳位 5 | OSC2/CLKOUT — Oscillator output / clock out |
| 腳位 6 | VSS — Ground reference |
| 腳位 7 | RB0/INT — Port B bit 0 / external interrupt |
| 腳位 8 | RB1 — Port B bit 1 (digital I/O) |
| 腳位 9 | RB2 — Port B bit 2 (digital I/O) |
| 腳位 10 | RB3 — Port B bit 3 (digital I/O) |
| 腳位 11 | VDD — Positive supply voltage (2.5 V to 6.25 V) |
| 腳位 12 | RB4 — Port B bit 4 (digital I/O) |
| 腳位 13 | RB5 — Port B bit 5 (digital I/O) |
| 腳位 14 | RB6 — Port B bit 6 (digital I/O) |
| 腳位 15 | RB7 — Port B bit 7 (digital I/O) |
| 腳位 16 | RC0 — Port C bit 0 (digital I/O) |
| 腳位 17 | RC1 — Port C bit 1 (digital I/O) |
| 腳位 18 | RC2 — Port C bit 2 (digital I/O) |
典型應用
PIC16LC622-04I/P 適用於 6 應用s: Consumer Appliance Control, Automotive Body Electronics, Industrial Sensor Interface, Battery-Powered Instrumentation, Remote Control Transmitter, LED Display Driver Controller.
Consumer Appliance Control
The PIC16LC622-04I/P suits consumer appliance controllers such as coffee makers, bread machines, toaster ovens, and small kitchen devices where the firmware is finalized at product launch and never updated. Its 3.5 KB OTP program memory holds a complete state machine plus user-interface handler; the 13 I/O pins drive segment LEDs, read membrane keypads, and switch TRIACs through optocouplers. The 2.5-6.25 V supply range supports direct connection to a rectified-mains 5 V regulator without level shifting.
推薦
Automotive Body Electronics
The PIC16LC622-04I/P serves in automotive body controllers for interior lighting, seat-position memory, mirror adjustment, and simple door-module logic. Its -40 °C to +85 °C industrial temperature range covers cabin environments; for under-hood or extreme environments an AEC-Q100 part is required. The 13 I/O pins are enough to read multiple switch inputs and drive low-side relays; LIN or CAN communication is handled via external transceiver and software bit-banging on a UART-capable pin.
推薦
Industrial Sensor Interface
Use the PIC16LC622-04I/P as a low-cost front-end for industrial sensor signal conditioning, threshold detection, and alarm reporting. The MCU's deterministic 1 µs instruction cycle allows predictable sampling of slow analog signals (via external comparator or ADC), while the OTP memory locks the calibration constants. Its wide 2.5-6.25 V VDD tolerates unregulated 24 V industrial rails stepped down through a simple linear regulator or Zener reference.
推薦
Battery-Powered Instrumentation
The PIC16LC622-04I/P operates directly from two alkaline or NiMH cells thanks to its 2.5 V minimum VDD and low-power CMOS LC process. In handheld meters, remote sensors, and battery-backed data loggers, the MCU wakes from sleep on a timer interrupt, reads a sensor, transmits a value, and returns to sleep. The 128-byte RAM is sufficient for buffer storage and the OTP memory holds fixed calibration tables.
推薦
Remote Control Transmitter
The PIC16LC622-04I/P fits infrared or RF remote-control transmitters for TVs, audio equipment, and consumer devices. Its 4 MHz clock is fast enough to generate 38 kHz IR carrier frequencies with hardware-timer interrupts, and the 13 I/O pins accept a matrix keypad plus IR LED driver. The low power consumption from the LC process extends battery life, and the OTP memory locks the protocol stack against accidental reprogramming in the field.
推薦
LED Display Driver Controller
The PIC16LC622-04I/P drives multiplexed 7-segment LED displays, dot-matrix indicators, and status panels by sequencing digit selects via high-current transistors or driver ICs. With 13 I/O pins the MCU controls up to 8 segment lines plus 4 digit selects (12 pins total) plus one indicator LED. The deterministic instruction timing keeps refresh rates constant without flicker, while OTP memory holds the display lookup table permanently.
推薦
推薦產品摘要
工程參考資料，適用於 PIC16LC622-04I/P — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | PIC16LC621A-04I/P | PIC16LC620A-04I/P | PIC16C622-04I/P | PIC16F628-04I/P | PIC16F84A-04I/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-pin PDIP | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same | 18-pin PDIP - same |
| Program Memory | 3.5 KB OTP | 1.75 KB OTP | 1.75 KB OTP | 3.5 KB EPROM | 3.5 KB Flash | 1.75 KB Flash |
| RAM | 128 bytes | 80 bytes | 96 bytes | 128 bytes | 224 bytes | 68 bytes |
| Max Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz (20 MHz with 20 MHz grade) | 4 MHz |
| Supply Voltage | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 2.5 V to 6.25 V | 3.0 V to 6.0 V | 3.0 V to 5.5 V | 2.0 V to 6.0 V |
| I/O Pins | 13 | 13 | 13 | 13 | 16 | 13 |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | Windowed/EPROM | Flash (reprogrammable) | Flash (reprogrammable) |
| Operating Temperature | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C | -40 °C to +85 °C |
主要差異化特點
- Wide 2.5-6.25 V VDD range (對比PIC16C622-04I/P)
- Reprogrammable flash upgrade path (對比PIC16F628-I/P)
- Industrial temperature grade by default (對比PIC16LC621A-04I/P)
設計說明
The PIC16LC622-04I/P accepts a wide 2.5 V to 6.25 V supply but does not include an internal voltage regulator. Place a 100 nF ceramic decoupling capacitor as close as possible to the VDD pin (pin 11) and a bulk capacitor (10 µF or larger) at the regulator output. For battery-powered designs the LC process gives very low quiescent current in sleep mode, allowing months of standby life on two AA cells when wake-up intervals are spaced seconds apart.
OTP program memory cannot be electrically erased: a single programming mistake permanently bricks the part. During development always use a flash-based equivalent such as the PIC16F628-I/P in the same 18-pin PDIP footprint, validate firmware, then migrate to the PIC16LC622-04I/P only for production runs. Also, the PIC16LC622 has only a two-level hardware stack — never enable interrupts from within an interrupt service routine or the return address is overwritten.
The 18-pin PDIP has 0.300 inch (7.62 mm) row spacing, which gives generous clearance for hand-soldering and through-hole rework. Route MCLR/VPP (pin 1) directly to the reset circuit without long parallel traces to oscillator pins; crosstalk on MCLR can cause spurious resets. Keep the oscillator traces short and surround them with a ground pour to reduce EMI susceptibility. Unused I/O pins should be configured as outputs and tied to ground or VDD, not left floating.
At 4 MHz the instruction cycle is 1 µs, which is forgiving for signal integrity on digital I/O. However, when driving long cables (such as in industrial sensor interfaces) use series resistors (100 Ω) on outputs to limit ringing, and add small capacitors (22-100 pF) on inputs for ESD protection. For software bit-banged UART at 9600 baud, ensure interrupt latency is bounded; the two-level hardware stack means deep call chains must be avoided inside ISRs.
合規資訊
RoHS and REACH compliance per Microchip product declarations. The industrial 'I' temperature grade is not AEC-Q100 qualified; for automotive under-hood or safety-critical applications select an AEC-Q100 qualified MCU from Microchip's automotive portfolio.
