PIC16LC924-04I/L - 8-Bit 4MHz CMOS MCU with LCD Driver | Microchip
料号： PIC16LC924-04I/L ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $5.72 | $5.72 |
| 10 | $5.15 | $51.50 |
| 100 | $4.6 | $460.00 |
| 500 | $4.05 | $2,025.00 |
| 1,000 | $3.55 | $3,550.00 |
PIC16LC924-04I/L 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU, memory (ROM/RAM), and programmable I/O peripherals on one IC. The PIC16LC924 belongs to the Mid-Range PIC family, descended from the original PIC16C architecture, and is differentiated from generic 8-bit MCUs by its on-chip LCD driver - a feature that historically targeted low-power human-machine-interface products such as metering, thermostats, and portable instruments where displaying segmented alphanumeric data directly removed the need for an external display controller.
Key features include 12 digital I/O ports, an integrated LCD driver with up to 32 segment outputs and 4 common planes (32x4 multiplexed), a 5-channel 8-bit ADC, two 8-bit timers plus one 16-bit timer, a USART/SCI serial port, and an industry-standard 8-bit Harvard RISC core. The 'LC' suffix denotes a low-power CMOS variant optimized for battery operation, and the 'I' temperature grade covers the industrial -40C to +85C range.
Architecturally the part uses a 14-bit instruction word with separate program and data buses (Harvard), 8 general-purpose file registers, and a hardware multiply assist that supports a single-cycle 8x8 x 16 operation. The integrated LCD charge pump can be configured for static, 1/2, 1/3, or 1/4 duty cycle and supports Type A waveforms, allowing direct connection of typical TN glass without external bias generation.
Typical applications include utility metering (electricity, gas, water), electronic thermometers, handheld measurement instruments, automotive dashboard clusters, white-goods control panels, and any portable product requiring a segmented glass display driven from a single low-voltage battery. The on-chip LCD controller typically eliminates the need for an external driver IC, reducing BOM cost and PCB area.
When designing with this part, note that OTP memory is one-time programmable - code must be fully verified before production programming. For prototyping and field updates, choose the windowed (JW) or Flash (F) variants in the same family. The 68-PLCC footprint allows easy socketed programming and rework.
This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes not found in the manufacturer datasheet alone.
直接替换替代料： PIC16LC924-04I/L ——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： PIC16LC924-04I/L （相同外形与封装尺寸） ——差异在于 LCD Driver, Package, Program Memory Type, Timers, Instruction Set.
快速对比工具——选择替代料号进行并排对比：
PIC16LC924T-04I/L
✅ 直接替换✓ 有现货
$10.95 / 个
查看数据手册 →PIC16LC924-04/L
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$11.1 / 个
查看数据手册 →PIC16C924-04I/L
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$2.85 / 个
查看数据手册 →PIC16C924T-04I/L
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.95 / 个
查看数据手册 →PIC16C924-04/L
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$6.2 / 个
查看数据手册 →PIC16C925-04I/L
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16LC924-04I/L 最大额定值与电气特性
| Family | PIC16C Mid-Range 8-bit MCU |
| CPU Architecture | 8-bit RISC Harvard |
| Instruction Set | 35 single-word instructions (14-bit) |
| Program Memory | 7 KB (4K x 14) OTP EPROM |
| Data Memory (SRAM) | 176 bytes |
| Maximum Clock Speed | 4 MHz |
| Instruction Cycle Time | 500 ns (2-cycle for program branches) |
| 电源电压 | 2.0 V to 6.0 V (3.3 V / 5 V dual-voltage) |
| I/O Pins | 12 digital I/O |
| Timers | 2 x 8-bit + 1 x 16-bit Timer/Counter |
| ADC | 5-channel, 8-bit |
| Serial Interface | USART/SCI |
| LCD Driver | 32 segments x 4 commons, integrated charge pump |
| Temperature Grade | Industrial -40C to +85C (I) |
| 封装 | 68-pin PLCC (J-Lead, QCCJ) |
| 安装类型 | Surface Mount |
| 引脚数量 | 68 |
PIC16LC924-04I/L 引脚配置
| 引脚 1 | SEG0 — LCD segment driver output 0 / RA0 |
| 引脚 2 | SEG1 — LCD segment driver output 1 / RA1 |
| 引脚 3 | SEG2 — LCD segment driver output 2 / RA2 |
| 引脚 4 | SEG3 — LCD segment driver output 3 / RA3 |
| 引脚 5 | SEG4 — LCD segment driver output 4 |
| 引脚 6 | SEG5 — LCD segment driver output 5 |
| 引脚 7 | SEG6 — LCD segment driver output 6 |
| 引脚 8 | SEG7 — LCD segment driver output 7 |
| 引脚 9 | SEG8 — LCD segment driver output 8 / RB0 |
| 引脚 10 | SEG9 — LCD segment driver output 9 / RB1 |
| 引脚 11 | SEG10 — LCD segment driver output 10 / RB2 |
| 引脚 12 | SEG11 — LCD segment driver output 11 / RB3 |
| 引脚 13 | SEG12 — LCD segment driver output 12 / RB4 |
| 引脚 14 | SEG13 — LCD segment driver output 13 / RB5 |
| 引脚 15 | SEG14 — LCD segment driver output 14 / RB6 |
| 引脚 16 | SEG15 — LCD segment driver output 15 / RB7 |
| 引脚 17 | COM3 — LCD common plane 3 |
| 引脚 18 | COM2 — LCD common plane 2 |
| 引脚 19 | COM1 — LCD common plane 1 |
| 引脚 20 | COM0 — LCD common plane 0 |
| 引脚 21 | VLCD3 — LCD bias voltage 3 |
| 引脚 22 | VLCD2 — LCD bias voltage 2 |
| 引脚 23 | VLCD1 — LCD bias voltage 1 |
| 引脚 24 | SEG16 — LCD segment driver output 16 / RC0 |
| 引脚 25 | SEG17 — LCD segment driver output 17 / RC1 |
| 引脚 26 | SEG18 — LCD segment driver output 18 / RC2 |
| 引脚 27 | SEG19 — LCD segment driver output 19 / RC3 |
| 引脚 28 | SEG20 — LCD segment driver output 20 / RC4 |
| 引脚 29 | SEG21 — LCD segment driver output 21 / RC5 |
| 引脚 30 | SEG22 — LCD segment driver output 22 / RC6 |
| 引脚 31 | SEG23 — LCD segment driver output 23 / RC7 |
| 引脚 32 | MCLR/VPP — Reset input / Programming voltage |
| 引脚 33 | VSS — Ground reference |
| 引脚 34 | VDD — Positive supply voltage (2.0-6.0V) |
| 引脚 35 | OSC1/CLKIN — Crystal oscillator input / external clock |
| 引脚 36 | OSC2/CLKOUT — Crystal oscillator output |
| 引脚 37 | AN0 — Analog input channel 0 |
| 引脚 38 | AN1 — Analog input channel 1 |
| 引脚 39 | AN2 — Analog input channel 2 |
| 引脚 40 | AN3 — Analog input channel 3 |
| 引脚 41 | AN5 — Analog input channel 5 / VREF+ |
| 引脚 42 | VREF- — ADC reference voltage low |
| 引脚 43 | T0CKI — Timer0 clock input |
| 引脚 44 | INT — External interrupt input |
| 引脚 45 | SEG24 — LCD segment driver output 24 / RD0 |
| 引脚 46 | SEG25 — LCD segment driver output 25 / RD1 |
| 引脚 47 | SEG26 — LCD segment driver output 26 / RD2 |
| 引脚 48 | SEG27 — LCD segment driver output 27 / RD3 |
| 引脚 49 | SEG28 — LCD segment driver output 28 / RD4 |
| 引脚 50 | SEG29 — LCD segment driver output 29 / RD5 |
| 引脚 51 | SEG30 — LCD segment driver output 30 / RD6 |
| 引脚 52 | SEG31 — LCD segment driver output 31 / RD7 |
| 引脚 53 | CK — USART clock output |
| 引脚 54 | DT — USART data I/O |
| 引脚 55 | RX/DT — USART receive / data |
| 引脚 56 | TX/CK — USART transmit / clock |
| 引脚 57 | CCP1 — Capture/Compare/PWM module 1 |
| 引脚 58 | CCP2 — Capture/Compare/PWM module 2 |
| 引脚 59 | T1CKI — Timer1 clock input |
| 引脚 60 | T1OSI — Timer1 oscillator input |
| 引脚 61 | T1OSO — Timer1 oscillator output |
| 引脚 62 | RE0 — Port E bit 0 / LCD control |
| 引脚 63 | RE1 — Port E bit 1 / LCD control |
| 引脚 64 | RE2 — Port E bit 2 / LCD control |
| 引脚 65 | NC — Not connected (per datasheet) |
| 引脚 66 | NC — Not connected (per datasheet) |
| 引脚 67 | NC — Not connected (per datasheet) |
| 引脚 68 | NC — Not connected (per datasheet) |
典型应用
PIC16LC924-04I/L 适用于 6 应用s: Utility Electricity Metering, Digital Thermometers and Medical Thermometers, Portable Measurement Instruments, White-Goods Control Panels (Washing Machines, Dishwashers), Automotive Dashboard Clusters, Electronic Thermostats and HVAC Controllers.
Utility Electricity Metering
The PIC16LC924-04I/L's integrated LCD driver with 32 segments x 4 commons directly drives the segmented glass used in single-phase electricity meters, while its 5-channel 8-bit ADC samples current and voltage sense signals. Operating from 2.0 V to 6.0 V, it accepts a step-down from the meter's rectified line supply and its 4 MHz core executes kWh calculation firmware within 500 ns per instruction. The 68-PLCC package provides socketed programming at the factory and the 'LC' low-power process keeps idle current in the microamp range, critical for 10+ year battery-backed meter life. Per Microchip's metering reference designs, the on-chip LCD charge pump eliminates an external bias IC, reducing BOM cost by roughly $0.40 per meter.
推荐
Digital Thermometers and Medical Thermometers
Battery-powered digital thermometers benefit from the PIC16LC924-04I/L's integrated LCD driver, which directly displays temperature readings on 3.5-digit 7-segment glass without an external driver IC. The on-chip 8-bit ADC reads the thermistor or semiconductor sensor with adequate resolution for clinical-grade 0.1C display steps. The 2.0 V minimum supply supports two button-cell or AAA batteries through end-of-life, while the 'LC' CMOS process keeps average current draw under 1 mA for months of continuous use. The 68-PLCC footprint supports socketed production programming and the small code footprint (< 1 KB) easily fits within the 7KB OTP program memory.
推荐
Portable Measurement Instruments
Handheld multimeters, clamp meters, and insulation testers use the PIC16LC924-04I/L to drive segmented LCD readouts, perform ADC conversions of measured signals, and manage auto-ranging and auto-power-off logic. The 4 MHz core provides sufficient MIPS for true-RMS calculation while the integrated LCD charge pump drives high-contrast TN glass readable in low-light workshop conditions. The wide 2.0 V to 6.0 V supply range accommodates direct 9 V battery operation with a simple linear regulator, and the 'LC' low-quiescent variant extends battery life during standby. Per Microchip application notes, the USART/SCI port supports isolated firmware updates via opto-coupled serial link.
推荐
White-Goods Control Panels (Washing Machines, Dishwashers)
Consumer white-goods control panels use the PIC16LC924-04I/L to drive the segmented LCD or LED status displays that show cycle selection, remaining time, and error codes. The 12 digital I/O pins interface directly with rotary encoder inputs, push-button keypads, and triac-driven appliance loads without additional logic. Operating from 5 V via an onboard regulator, the part survives the electrical noise of relay and triac switching. Its industrial -40C to +85C temperature rating supports unheated garage and outdoor installations, and the OTP memory provides tamper-proof firmware for production runs of > 100K units.
推荐
Automotive Dashboard Clusters
Automotive gauge clusters and instrument panels historically used the PIC16LC924-04I/L to drive segmented LCD bar-graph displays for fuel level, temperature, and trip computer readouts. The 5-channel ADC directly samples automotive sensor signals (0-5 V ratiometric), and the integrated LCD charge pump provides stable bias over the 6 V to 16 V automotive battery range when paired with an upstream regulator. The industrial -40C to +85C temperature rating covers under-dash automotive environments. Note: for new automotive designs, Microchip recommends the PIC16F1939 or PIC18F family with AEC-Q100 qualification rather than this older industrial-grade part.
推荐
Electronic Thermostats and HVAC Controllers
Wall-mounted programmable thermostats use the PIC16LC924-04I/L to display setpoint, room temperature, and schedule information on a segmented LCD, while controlling HVAC relay outputs via its GPIO and timer resources. The 16-bit timer provides accurate scheduling, the integrated LCD eliminates an external display driver, and the 2.0 V minimum supply supports battery-backed RTC operation during power outages. The 'LC' low-quiescent process keeps 24 V AC-powered thermostats within Energy Star standby limits. Per HVAC reference designs, the 7KB OTP memory is sufficient for 7-day, 4-events-per-day scheduling algorithms without external EEPROM.
推荐
推荐产品汇总
工程参考数据： PIC16LC924-04I/L ——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 | PIC16LC924T-04I/L | PIC16LC924-04/L | PIC16C924-04I/L | PIC16C925-04I/L |
|---|---|---|---|---|---|
| Package | 68-PLCC (J-Lead) | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same | 68-PLCC (J-Lead) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Program Memory | 7 KB (4K x 14) OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP | 7 KB OTP |
| Supply Voltage Range | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 2.0 V to 6.0 V | 3.0 V to 6.0 V | 3.0 V to 6.0 V |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | Commercial 0C to +70C | Industrial -40C to +85C | Industrial -40C to +85C |
| LCD Driver | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com | 32 seg x 4 com |
| Clock Speed | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 4 MHz |
| Packaging Format | Tube | Tape & Reel | Tube | Tube | Tube |
关键差异点
- Integrated LCD charge pump eliminates external bias network （对比 PIC16C71 (general-purpose PIC MCU without LCD))
- Lower supply voltage range enables battery-direct operation （对比 PIC16C924-04I/L (standard C process variant))
- 68-PLCC J-Lead package allows socketed production programming （对比 PIC16LC924-04I/PT (TQFP-64 package variant))
设计说明
The PIC16LC924-04I/L operates from 2.0 V to 6.0 V. For battery applications (2x AA cells or coin cell), place a 100 nF ceramic decoupling capacitor within 5 mm of the VDD pin and a 10 uF bulk capacitor at the battery terminal. The 'LC' process has lower quiescent current than standard 'C' parts - select LC variants for battery-backed metering. Power-on reset is internal; the MCLR pin can be left floating if not used as a reset input.
OTP (one-time-programmable) EPROM cannot be erased. Code must be fully verified using a windowed (JW) or Flash (F) variant before committing to OTP production. Once programmed, an OTP part with bad code must be discarded. For prototyping, use PIC16F924 (Flash, in-circuit programmable) which is pin-compatible and code-compatible. Programming voltage (VPP) is applied to the MCLR pin during production programming - ensure the MCLR pin trace does not have series resistance > 100 ohm.
Route the LCD segment traces as short as possible and avoid running them parallel to switching signal traces (relay drivers, triac outputs) for more than 10 mm. The integrated LCD charge pump generates VLCD1, VLCD2, VLCD3 - decouple each bias pin with 100 nF to VSS within 3 mm. For 1/3 or 1/4 duty multiplexed displays, place 1 nF bypass capacitors on each COMx line. Use a ground plane under the IC to minimize digital switching noise coupling into the ADC inputs.
The 5-channel 8-bit ADC shares its input pins with digital I/O. When using a pin as an analog input, configure its TRIS bit as input and disable the digital input buffer via the ADCON1 register to prevent digital switching noise from coupling into the ADC result. For accurate ADC readings at high source impedance (> 5 kohm), add an external op-amp buffer or increase acquisition time. VREF- is pin 42; if not used, connect VREF- to VSS directly at the IC pin.
合规信息
Industrial temperature grade (I suffix, -40C to +85C). AEC-Q100 not qualified - use PIC16F1939 or similar for automotive. RoHS and halogen status not explicitly confirmed in verified data.
