PIC16C58B/JW - 8-Bit 20MHz UV EPROM MCU 18-CERDIP | Microchip
MPN: PIC16C58B/JW ✗ Cuối đờiPIC16C58B/JW Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory, working RAM, and peripheral I/O into one IC. The PIC16C5X family occupies the entry-level tier of 8-bit microcontrollers, optimized for cost-sensitive, deterministic control tasks where simple I/O handling, low power, and small code footprints are paramount. These MCUs sit in the broader hierarchy of embedded computing as: microcontroller -> 8-bit MCU -> RISC MCU -> embedded processor -> semiconductor. The JW windowed CERDIP package distinguishes this part from the OT (one-time-programmable) CERDIP version by allowing UV erasure for repeated firmware development cycles.
Key features include 8-bit data width, 20MHz maximum clock, 12 bidirectional digital I/O pins, a 2K x 12 program word organization, 8-bit timer/counter with 8-bit prescaler, watchdog timer with on-chip RC oscillator, power-on reset, and a 2.5V to 6.0V operating voltage range. The instruction set provides 33 single-word, single-cycle instructions, all executed in 200ns at 20MHz, simplifying code generation and timing analysis. Power-saving SLEEP mode reduces quiescent current to below 1 microampere for battery-friendly applications.
Architecturally, the PIC16C5X uses a Harvard-style RISC core with a 12-bit program word and a separate 8-bit data path. The fully static CMOS design eliminates minimum clock rate restrictions, allowing the part to be clock-stepped for low-power or synchronous debugging. Code protection is supported via fuse bits, and the JW windowed package enables direct UV erasure of the EPROM, making this variant the preferred choice for engineering development, prototyping, and low-volume production where firmware iterations are expected.
Typical applications include appliance controllers, HVAC damper and fan control, security keypads, sensor signal conditioning front-ends, automotive body-electronics nodes, battery chargers, simple remote-control transmitters, and educational microcontroller trainers. The PIC16C5X instruction set and pinout also make this part a drop-in-compatible base for legacy designs that began development in the early 1990s. When designing, reserve the 18-pin CERDIP window for a UV eraser lid if firmware changes are expected, and budget for a 73-byte RAM ceiling, which is sufficient for small state machines but constrains stack depth and buffer-heavy code.
For a JW windowed part, plan a UV erasure station with a 12,000 uW-sec/cm² rated lamp and a 20-30 minute exposure time. A ceramic window sticker or opaque label must cover the window after programming to prevent data corruption from ambient light. This page synthesizes distributor pricing, verified drop-in compatible PIC16C5X alternatives, and design notes that complement the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho PIC16C58B/JW — 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 PIC16C58B/JW (cùng hình factor và footprint) — khác nhau ở Package, RoHS Status, Timers, Watchdog Timer, I/O Pins.
PIC16C58B-20/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C58B-04/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C58B-20I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16F57-I/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C57-XT/P
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →PIC16C58B/JW Tỷ lệ tối đa & tính chất điện
| Core Architecture | 8-bit RISC (PIC16C5X family) |
| Program Memory Type | EPROM (UV-erasable windowed) |
| Program Memory Size | 3KB (2K x 12) |
| RAM | 73 bytes |
| Maximum CPU Frequency | 20 MHz |
| Instruction Set | 33 single-word, single-cycle instructions |
| Instruction Cycle Time | 200 ns at 20 MHz |
| I/O Pins | 12 |
| Timers | 1 x 8-bit timer/counter with 8-bit prescaler |
| Watchdog Timer | Yes, with on-chip RC oscillator |
| Operating Voltage | 2.5 V to 6.0 V |
| Hộp | 18-pin CERDIP windowed (JW) |
| Kiểu lắp đặt | Through-hole |
| Temperature Grade | Commercial |
Cấu hình chân PIC16C58B/JW
| 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 reset input (active low) |
| Chân 5 | VSS — Ground reference |
| Chân 6 | RB0 — Bidirectional I/O port B bit 0 |
| 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 | VDD — Positive supply voltage (2.5V to 6.0V) |
| Chân 15 | OSC2 — Oscillator output / crystal connection |
| Chân 16 | OSC1 — Oscillator input / crystal connection |
| Chân 17 | RA0 — Bidirectional I/O port A bit 0 |
| Chân 18 | RA1 — Bidirectional I/O port A bit 1 |
Ứng dụng tiêu biểu
PIC16C58B/JW phù hợp cho 6 Áp dụngs: Appliance Control Front Panel, HVAC Damper and Fan Motor Controller, Security Keypad and Access Controller, Simple Remote Control Transmitter, Educational Microcontroller Trainer, Legacy Automotive Body Electronics Node.
Appliance Control Front Panel
The PIC16C58B/JW is well matched to legacy appliance control panels (washing machines, dishwashers, microwave ovens) where a 3 KB EPROM, 12 I/O lines, and a single 8-bit timer are sufficient to drive a 7-segment display, scan a 4x4 keypad, and switch a few relays. The 20 MHz RISC core delivers 5 MIPS, providing deterministic response to button presses and sensor inputs without jitter. The 2.5V-6.0V operating range allows direct 5V drop-in usage from the appliance's existing linear supply. Compared to a modern PIC16F57, the JW windowed package allows firmware iteration during development, which shortens time to production for small appliance SKUs.
Được đề xuất
HVAC Damper and Fan Motor Controller
The PIC16C58B/JW suits small HVAC damper actuators and fan-speed controllers because its 12 I/O pins can directly drive TRIAC optocouplers, capture zero-crossing signals, and read NTC thermistor inputs via the built-in ADC-less comparator. The 8-bit timer/counter with 8-bit prescaler generates the PWM or phase-angle control needed for AC motor speed regulation. Operating from 2.5V-6.0V, the MCU can share the 5V standby rail of the HVAC control board. The JW windowed package lets the firmware be re-erased and re-programmed as the motor-control algorithm is tuned in the lab.
Được đề xuất
Security Keypad and Access Controller
Security keypads for door access and alarm arm/disarm panels use the PIC16C58B/JW because the 33 single-cycle RISC instructions make the keypad-debounce and PIN-validation code trivially small, and the 73-byte RAM is sufficient for storing one PIN buffer and a small audit log. The 12 I/O pins drive the 4x4 matrix keypad, status LEDs, and a relay to the door strike without external I/O expanders. The watchdog timer with on-chip RC oscillator provides the integrity check needed for fail-safe alarm panels. The JW variant allows secure firmware updates during installation without replacing the OTP equivalent.
Được đề xuất
Simple Remote Control Transmitter
Garage-door openers, ceiling-fan remotes, and toy remote controls use the PIC16C58B/JW as a low-cost transmitter MCU, where 3 KB of EPROM is enough for the IR/RF encoding tables, the timer drives the carrier frequency, and the SLEEP mode drops quiescent current to under 1 uA for long battery life. The 2.5V minimum VDD allows operation directly from a single CR2032 coin cell. The JW windowed package lets the OEM re-use one hardware design across multiple SKUs by re-programming only the EPROM.
Được đề xuất
Educational Microcontroller Trainer
Universities and trade schools use the PIC16C58B/JW in 8-bit microcontroller training labs because the 33-instruction RISC architecture is small enough to teach in one semester, and the JW windowed CERDIP allows students to repeatedly erase and re-program the device with their lab exercises. The 18-pin DIP through-hole package is breadboard-friendly, so students can wire I/O without soldering. The 20 MHz instruction rate is slow enough to step-debug with simple logic analyzers, and the well-documented instruction set is supported by decades of teaching materials.
Được đề xuất
Legacy Automotive Body Electronics Node
Older automotive body-electronics modules (window lifters, mirror controllers, seat-position memories) use the PIC16C58B/JW because of its compact code footprint, 12 I/O lines, and ability to operate across automotive temperature swings in the -I industrial variant. The single 8-bit timer captures Hall-sensor pulses for motor commutation, and the watchdog timer ensures the module resets in the event of an EMI-induced lockup. The 5V operation aligns with legacy 12V-bus-derived rails. The JW windowed package supports field firmware updates in dealer service bays.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho PIC16C58B/JW — 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 | PIC16C58B-20/P | PIC16C58B-04/P | PIC16C58B-20I/P | PIC16F57-I/P | PIC16C57-XT/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-CERDIP (JW windowed) | 18-PDIP (OTP) | 18-PDIP (OTP) | 18-PDIP (OTP) | 18-PDIP (Flash) | 18-PDIP (OTP) |
| Program Memory | 3 KB EPROM (2K x 12) | 3 KB EPROM | 3 KB EPROM | 3 KB EPROM | 3 KB Flash | 2 KB EPROM |
| RAM | 73 bytes | 73 bytes | 73 bytes | 73 bytes | 72 bytes | 72 bytes |
| Max CPU Frequency | 20 MHz | 20 MHz | 4 MHz | 20 MHz | 20 MHz | 4 MHz |
| Memory Type | UV-EPROM (windowed) | OTP EPROM | OTP EPROM | OTP EPROM | Flash | OTP EPROM |
| Temperature Grade | Commercial | Commercial | Commercial | Industrial | Industrial | Commercial |
| Operating Voltage | 2.5V to 6.0V | 2.5V to 6.0V | 2.5V to 6.0V | 2.5V to 6.0V | 2.0V to 5.5V | 2.5V to 6.0V |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 |
| Lifecycle Status | Obsolete | Obsolete | Obsolete | Obsolete | Active | Obsolete |
Bảo phân biệt quan trọng
- UV-erasable windowed package for firmware iteration (vsPIC16C58B-20/P)
- Active-production Flash alternative for new designs (vsPIC16F57-I/P)
- 3 KB EPROM vs 2 KB EPROM for larger firmware (vsPIC16C57-XT/P)
Ghi chú thiết kế
Estimated: A JW windowed part can be erased only with a UV lamp rated at 12,000 uW-sec/cm^2 for 20-30 minutes; ambient sunlight through a window will not erase it but fluorescent lighting can degrade stored charge over weeks. After programming, cover the quartz window with an opaque label to prevent data corruption from stray UV. Failure to cover the window is a common cause of field failures in PIC16C5X-based products.
The PIC16C58B/JW operates from 2.5V to 6.0V, but maximum 20 MHz operation requires VDD >= 4.5V. For 3.3V systems, derate the clock to 10 MHz or use the PIC16F57-I/P which supports 20 MHz down to 2.0V. Place a 100 nF decoupling capacitor as close to the VDD pin (14) as possible, and add a 10 uF bulk capacitor on the supply rail. The MCLR pin (4) should be tied to VDD through a 10 kohm pull-up; a 100 nF capacitor on MCLR provides a clean power-on reset.
Keep the OSC1/OSC2 traces short and symmetric, and route them away from RB port switching lines to avoid coupling clock noise into the digital I/O. For a 20 MHz crystal, use a fundamental-mode cut with 15-33 pF load capacitors matched to the crystal's specification. If using an external CMOS clock, drive only OSC1 and leave OSC2 floating. The MCLR trace should not run parallel to high-current switching signals to prevent false resets from crosstalk.
The CERDIP package has a higher thermal resistance than plastic DIP (approximately 100 C/W theta_JA), so the PIC16C58B/JW runs warmer at high ambient temperatures. This is rarely a concern for the 8-bit PIC16C5X family because the core draws only a few mA, but in sealed enclosures at industrial temperature grades (-40 to +85 C) confirm that the device dissipation stays below 200 mW. Forced airflow is not typically required.
Thông tin tuân thủ
The JW windowed CERDIP package contains a quartz window and ceramic body with lead-based solder, making it non-RoHS by definition. Microchip has not published a current RoHS statement for this obsolete part; the -04I/P and -20I/P industrial variants are not AEC-Q100 qualified and should not be used in safety-critical automotive systems without additional qualification.
