PIC16C73B/JW - 8-Bit 20MHz MCU 7KB EPROM UV Window CDIP-28 | Microchip
料号： PIC16C73B/JW ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.8 | $168.00 |
| 100 | $14.2 | $1,420.00 |
| 500 | $11.95 | $5,975.00 |
| 1,000 | $9.75 | $9,750.00 |
PIC16C73B/JW 概述
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and programmable I/O peripherals. The PIC16C73B belongs to the mid-range PIC16C family, positioned between the baseline PIC12C/PIC16C5X and the enhanced PIC17C/PIC18C architectures. The /JW suffix denotes a windowed ceramic DIP package intended for development, prototyping, and code iteration via UV erasure, while the production-grade PIC16C73B-20/SO and PIC16C73B-20/SP variants ship in one-time-programmable (OTP) plastic packages.
Key features include five channels of 8-bit A/D conversion (the PIC16C73A's three channels were doubled in the B revision), two 8-bit timer/counters plus a 16-bit Timer1 with external crystal/clock increment in SLEEP, two Capture/Compare/PWM modules, a synchronous serial port configurable as 3-wire SPI or 2-wire I2C, and a USART. Upwards compatibility with the PIC16C5X and PIC12CXXX preserves software investment across product generations.
Typical applications include industrial sensor signal acquisition, motor control loops using the CCP modules, embedded serial-communication bridges (SPI/I2C/USART), prototyping platforms for PIC16C firmware development, and legacy automotive or HVAC controllers designed in the late 1990s and early 2000s. The UV window enables iterative erase/reprogram cycles during design validation, while production builds typically migrate to the OTP plastic DIP or SOIC variants for cost reasons.
When designing with this MCU, note that the PIC16C73B/JW is in production-discontinued status - the JW windowed CerDIP package is supplied for legacy and hobbyist use, with lead times varying across distributors. For new designs, migrate to the PIC16F73 flash-based equivalent in 28-pin PDIP or SOIC. For drop-in development, the ceramic-windowed variant is electrically identical to its OTP counterpart, only the package and erase mechanism differ.
直接替换替代料： PIC16C73B/JW ——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： PIC16C73B/JW （相同外形与封装尺寸） ——差异在于 Program Memory Size, Package, Timers, Core Architecture, Instruction Execution Time.
快速对比工具——选择替代料号进行并排对比：
PIC16C73B-20/SP
✅ 直接替换✓ 有现货
$4.95 / 个
查看数据手册 →PIC16C73B-20/SO
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
PIC16C73B-04/SP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5 / 个
查看数据手册 →PIC16F73-I/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC16F873A-I/SP
✅ 直接替换📋 参考替代料（不在目录中）
PIC16C73A-20/SP
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$7.2 / 个
查看数据手册 →PIC16C73B/JW 最大额定值与电气特性
| Core Architecture | PIC16C mid-range, 8-bit RISC |
| Instruction Set Width | 14-bit |
| Instruction Count | 35 single-word instructions |
| 最大时钟频率 | 20 MHz |
| Instruction Execution Time | 200 ns (5 MIPS) |
| Program Memory Type | UV-erasable EPROM |
| Program Memory Size | 7 KB (4K x 14) |
| RAM | 192 bytes |
| I/O Pins | 22 |
| ADC | 5 channels, 8-bit |
| Timers | Timer0 (8-bit), Timer1 (16-bit, can run in SLEEP), Timer2 (8-bit) |
| CCP Modules | 2 (Capture/Compare/PWM) |
| Serial Interfaces | SPI, I2C, USART |
| 封装 | 28-pin CerDIP with UV window |
| Package Code | JW (windowed CerDIP, through-hole, 0.300 inch / 7.62mm pitch) |
| RoHS 状态 | unknown |
| Lead-Free Status | unknown |
PIC16C73B/JW 引脚配置
| 引脚 1 | MCLR/VPP — Master Clear (reset) input / programming voltage |
| 引脚 2 | RA0/AN0 — PORTA bit 0 / Analog input 0 |
| 引脚 3 | RA1/AN1 — PORTA bit 1 / Analog input 1 |
| 引脚 4 | RA2/AN2 — PORTA bit 2 / Analog input 2 |
| 引脚 5 | RA3/AN3/VREF — PORTA bit 3 / Analog input 3 / Voltage reference |
| 引脚 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| 引脚 7 | RA5/AN4/SS — PORTA bit 5 / Analog input 4 / SPI slave select |
| 引脚 8 | OSC1/CLKIN — Oscillator crystal input / external clock |
| 引脚 9 | OSC2/CLKOUT — Oscillator crystal output / clock out |
| 引脚 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator out / Timer1 clock in |
| 引脚 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator in / CCP2 |
| 引脚 12 | RC2/CCP1 — PORTC bit 2 / CCP1 |
| 引脚 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| 引脚 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| 引脚 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| 引脚 16 | RC6/TX/CK — PORTC bit 6 / USART TX / USART clock |
| 引脚 17 | RC7/RX/DT — PORTC bit 7 / USART RX / USART data |
| 引脚 18 | VSS — Ground |
| 引脚 19 | VDD — Positive supply voltage |
| 引脚 20 | RB0/INT — PORTB bit 0 / external interrupt |
| 引脚 21 | RB1 — PORTB bit 1 |
| 引脚 22 | RB2 — PORTB bit 2 |
| 引脚 23 | RB3 — PORTB bit 3 |
| 引脚 24 | RB4 — PORTB bit 4 |
| 引脚 25 | RB5 — PORTB bit 5 |
| 引脚 26 | RB6/PGC — PORTB bit 6 / ICSP clock |
| 引脚 27 | RB7/PGD — PORTB bit 7 / ICSP data |
| 引脚 28 | VSS — Ground (secondary) |
典型应用
PIC16C73B/JW 适用于 6 应用s: Industrial Sensor Signal Acquisition, DC Motor Speed and Direction Control, Embedded SPI/I2C Sensor Hub, HVAC and Appliance Control Legacy Boards, Educational and Hobbyist Prototyping Platform, Industrial USART-to-SPI/I2C Protocol Bridge.
Industrial Sensor Signal Acquisition
The PIC16C73B/JW's 5-channel 8-bit ADC and 22 I/O pins make it well suited for industrial multi-sensor front-ends reading thermocouples, pressure transducers, and 4-20mA current loops. With a 20 MHz core executing 35 single-word instructions in 200 ns, it handles four 100 Hz sensor scans per loop with margin for averaging and linearization. The 192-byte RAM accommodates 32-sample rolling buffers per channel. The JW windowed package lets firmware teams iterate calibration coefficients during prototyping without scrapping parts. For new designs the PIC16F73 flash variant offers in-circuit reprogramming of trim values. The 28-pin CerDIP's through-hole construction also tolerates the mechanical stress of factory floor wiring harnesses.
推荐
DC Motor Speed and Direction Control
The PIC16C73B/JW's two Capture/Compare/PWM modules drive two independent PWM channels at up to 20 kHz, sufficient for H-bridge control of small brushed DC or bipolar stepper motors. Timer1's 16-bit resolution and external-clock SLEEP capability enable precise tachometer feedback for closed-loop PID speed control. The 5-channel ADC reads motor current via op-amp sense resistors for stall protection. With 5 MIPS, the firmware can execute a 200-line control loop in well under 1 ms latency. The UV-windowed JW variant is ideal for tuning acceleration ramps and PID coefficients; once firmware is stable, production migrates to PIC16C73B-20/SP OTP plastic DIP at lower cost.
推荐
Embedded SPI/I2C Sensor Hub
The PIC16C73B/JW's synchronous serial port (SSP) configurable as 3-wire SPI master or 2-wire I2C master lets the MCU aggregate multiple digital sensors (LM75 temperature, MCP23017 GPIO expanders, EEPROMs) onto a single 22-I/O bus. With 5 MIPS throughput and 35 instructions, the firmware can poll four I2C devices at 100 kHz or 400 kHz with plenty of headroom for sensor fusion. The USART provides a debug console or upstream link to a host processor. The windowed CerDIP JW package supports prototype reconfiguration of bus addresses and protocol logic. For high-volume production, the PIC16C73B-20/SO SOIC variant offers the same silicon in a smaller footprint.
推荐
HVAC and Appliance Control Legacy Boards
The PIC16C73B/JW is found in legacy 1990s-2000s HVAC, washing machine, and dishwasher controllers where its 22 I/O pins drive relays, triacs, and seven-segment displays while its 5 ADC channels read temperature and humidity sensors. The ceramic DIP JW package is favored for field-service repair of long-lifecycle appliances where controllers must survive 15+ years. While Microchip has discontinued new designs around this MCU, the JW windowed variant remains available for service replacements. For new HVAC designs, Microchip recommends the PIC16F1939 or PIC18F46K22 with modern peripherals and nanoWatt sleep modes.
推荐
Educational and Hobbyist Prototyping Platform
The PIC16C73B/JW is widely used in university embedded systems courses and hobbyist projects due to its UV-erasable windowed CerDIP that allows iterative code development and experiment reuse across student labs. The 35-instruction mid-range PIC16C core teaches RISC fundamentals, register banking, and interrupt-driven programming in a single, easy-to-understand architecture. The 20 MHz clock delivers 200ns instruction overhead timing visible on a logic analyzer. Students can experiment with PWM motor control, ADC sampling, and USART serial communication all on one chip. The JW window enables erasing with a UV lamp, supporting dozens of erase/program cycles per device across a semester.
推荐
Industrial USART-to-SPI/I2C Protocol Bridge
The PIC16C73B/JW's combination of USART (async serial) and synchronous serial port (SPI/I2C) makes it a natural protocol bridge for legacy industrial equipment lacking modern bus support. The MCU can receive Modbus RTU frames over RS-485 via the USART, then translate them to SPI commands for a digital sensor or I2C commands for a GPIO expander, with response framing back to the host. The 5-channel ADC allows the bridge to also report analog telemetry. The windowed JW variant supports firmware iteration during protocol stack debugging, with production builds moving to PIC16F73-I/SP flash for ICSP-based field updates.
推荐
推荐产品汇总
工程参考数据： PIC16C73B/JW ——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 | PIC16C73B-20/SP | PIC16C73B-20/SO | PIC16C73B-04/SP | PIC16F73-I/SP | PIC16F873A-I/SP | PIC16C73A-20/SP |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-CerDIP with UV window (JW) | 28-PDIP (same pinout) | 28-SOIC (SMD) | 28-PDIP (same pinout) | 28-PDIP (same pinout) | 28-PDIP (same pinout) | 28-PDIP (same pinout) |
| Program Memory | 7 KB UV EPROM (4K x 14) | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB OTP EPROM | 7 KB flash | 7 KB flash | 7 KB UV EPROM |
| RAM | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes | 192 bytes |
| ADC Channels / Resolution | 5 / 8-bit | 5 / 8-bit | 5 / 8-bit | 5 / 8-bit | 5 / 8-bit | 8 / 10-bit | 3 / 8-bit (-40%) |
| Maximum Clock Frequency | 20 MHz | 20 MHz | 20 MHz | 4 MHz (-80%) | 20 MHz | 20 MHz | 20 MHz |
| CCP Modules | 2 | 2 | 2 | 2 | 2 | 5 (+150%) | 2 |
| In-System Programming | No (UV erase only) | No (OTP) | No (OTP) | No (OTP) | Yes (ICSP) | Yes (ICSP) | No (UV window in JW) |
| Qty-1 Unit Price (USD, as of 2026-09-18) | 18.50 | 9.50 (-50%) | 8.80 (-52%) | 8.20 (-56%) | 5.95 (-68%) | 6.40 (-65%) | 16.00 (-14%) |
关键差异点
- UV-erasable windowed package for iterative development （对比 PIC16C73B-20/SP)
- 5-channel 8-bit ADC versus predecessor's 3 channels （对比 PIC16C73A-20/SP)
- Flash memory for in-circuit reprogramming （对比 PIC16F73-I/SP)
- Enhanced 10-bit ADC and 5 CCP modules （对比 PIC16F873A-I/SP)
设计说明
Estimated: The /JW suffix is a UV-erasable windowed ceramic package intended for development only - it is NOT suitable for cost-sensitive production. Once firmware is finalized, migrate to the PIC16C73B-20/SP (OTP plastic DIP) or PIC16C73B-20/SO (OTP SOIC) to save 50-65% on unit cost. The JW variant's ceramic body and quartz window add roughly $10/unit BOM cost versus OTP plastic.
Estimated: The 28-pin CerDIP (0.300 inch / 7.62 mm row pitch) is significantly larger than modern 28-pin SOIC or SSOP footprints. If migrating from PIC16C73B/JW prototype to PIC16F73-I/SO production, the PCB footprint must change - they are NOT drop-in same-package. Plan PCB variants accordingly or design with the JW footprint and accept the larger PCB. Use sockets for the JW dev chips to enable UV erasure reuse.
The PIC16C73B is in NRND (Not Recommended for New Designs) status per Microchip as of 2026. For new designs, choose the PIC16F73 (flash-based, in-circuit programmable) or PIC16F873A (enhanced 10-bit ADC, 5 CCP) which share the same 28-pin DIP pinout. PIC16C73B silicon is no longer recommended by Microchip for automotive or medical new designs.
Estimated: Typical Vdd range for the PIC16C73B/JW is 4.0V to 6.0V per the datasheet, with absolute maximum Vdd of 7.0V. Add a 100 nF decoupling capacitor as close as possible to pin 19 (VDD) and pin 18 (VSS), plus a bulk 10 uF electrolytic at the board power input. The MCU draws approximately 5-15 mA active at 20 MHz and 5-20 uA in SLEEP mode.
合规信息
Compliance information not present in the verified web data; ceramic DIP JW package historically pre-dates RoHS exemption rules for aerospace/military. The PIC16C73B is not AEC-Q100 automotive qualified.
