PIC16C58BT-04E/SS - 8-Bit 4MHz OTP MCU 3KB | Microchip
MPN: PIC16C58BT-04E/SS ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.78 | $278.00 |
| 500 | $2.45 | $1,225.00 |
| 1,000 | $2.15 | $2,150.00 |
PIC16C58BT-04E/SS Overview
An 8-bit microcontroller is a single-chip computer that integrates a CPU, RAM, non-volatile program memory, and I/O peripherals on one die. RISC (Reduced Instruction Set Computer) microcontrollers like the PIC16C5X family use a small, fixed-length instruction set — typically 33 to 35 instructions — where most instructions execute in a single clock cycle. This makes them far more deterministic and easier to program than CISC designs. In the broader system hierarchy, the PIC16C5X belongs to the microcontroller family, which sits within the embedded computing category of digital ICs, used everywhere from appliance controls to industrial sensors.
Key features of the PIC16C58BT-04E/SS include: 2:1 code compression versus competing 8-bit MCUs, a wide operating voltage range, ultra-low power CMOS design, and an industrial temperature grade of -40°C to +125°C. The 4MHz oscillator, combined with 12-bit-wide instructions, yields compact code density. Its 20-pin SSOP package offers a small board footprint suitable for space-constrained designs, and the -04 speed variant specifies the 4MHz maximum frequency, while the 'E' suffix denotes the extended industrial temperature range.
Technically, the PIC16C58B uses a Harvard architecture with separate program and data buses, allowing instruction fetch and data access in a single cycle. The 12-bit instruction word is the hallmark of the PIC16C5X baseline architecture, distinct from the 14-bit mid-range and 16-bit enhanced cores. With 73 bytes of general-purpose RAM and 12 digital I/O pins, the device targets simple control loops, user-interface logic, and glue-replacement tasks rather than high-throughput signal processing.
Typical applications for the PIC16C58BT-04E/SS include appliance control (washing machines, microwaves, coffee makers), battery chargers, LED lighting controllers, simple sensor interfaces, and remote-control transmitters. Its OTP memory is suited to high-volume production where firmware is finalized and re-programming is unnecessary. The device is also commonly used in educational platforms and legacy industrial equipment retrofits.
When designing with the PIC16C58BT-04E/SS, engineers should plan around the OTP memory constraint: firmware must be 100% verified before programming, as OTP parts cannot be re-flashed. The 4MHz limit and 2K x 12 program word count also bound the algorithmic complexity; tasks requiring floating-point math or large lookup tables may need the PIC16C55, PIC16C56, or PIC16C57 siblings with more program memory.
This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet, helping engineers and buyers make informed decisions about this mature PIC16C5X baseline MCU.
Drop-in alternatives for PIC16C58BT-04E/SS — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with PIC16C58BT-04E/SS (same form factor and footprint) — differing in Package, Program Memory Type, Operating Temperature Range, Program Memory Size, MSL Level.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C58B-04I/SS
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16C58BT-04I/SS
✅ Drop-In✓ In Stock
$2.65 / Unit
View Datasheet →PIC16C58BT-04/SS
✅ Drop-In✓ In Stock
$1.62 / Unit
View Datasheet →PIC16C58B-20E/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$2.78 / Unit
View Datasheet →PIC16C58B-40/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$0.72 / Unit
View Datasheet →PIC16C58B-04/SS
✅ Drop-In ⚠️ 参数待验证✓ In Stock
$1.45 / Unit
View Datasheet →PIC16C58BT-04E/SS Maximum Ratings & Electrical Characteristics
| Core Architecture | PIC16C5X (8-bit RISC, Harvard) |
| Instruction Set Width | 12-bit |
| Number of Instructions | 33 (single word, single cycle) |
| Program Memory Type | OTP (One-Time Programmable) EPROM |
| Program Memory Size | 3 KB (2K x 12) |
| RAM Size | 73 bytes |
| Maximum Clock Frequency | 4 MHz |
| I/O Pins | 12 |
| Operating Temperature Range | -40°C to +125°C (industrial, 'E' suffix) |
| Package | 20-pin SSOP (5.30 mm / 0.209 inch width) |
| Mounting Type | Surface Mount |
| Integrated Peripherals | Power-On Reset (POR), Watchdog Timer (WDT) |
| Speed Grade | 04 = 4 MHz maximum oscillator |
PIC16C58BT-04E/SS Pin Configuration
| Pin 1 | RA2 — General-purpose I/O pin, port A bit 2 |
| Pin 2 | RA3 — General-purpose I/O pin, port A bit 3 |
| Pin 3 | RB0 — General-purpose I/O pin, port B bit 0 |
| Pin 4 | RB1 — General-purpose I/O pin, port B bit 1 |
| Pin 5 | RB2 — General-purpose I/O pin, port B bit 2 |
| Pin 6 | RB3 — General-purpose I/O pin, port B bit 3 |
| Pin 7 | RB4 — General-purpose I/O pin, port B bit 4 |
| Pin 8 | RB5 — General-purpose I/O pin, port B bit 5 |
| Pin 9 | RB6 — General-purpose I/O pin, port B bit 6 |
| Pin 10 | RB7 — General-purpose I/O pin, port B bit 7 |
| Pin 11 | Vss — Ground reference |
| Pin 12 | OSC1 — Oscillator input / external clock input |
| Pin 13 | OSC2 — Oscillator output (crystal/resonator mode) |
| Pin 14 | T0CKI — Timer0 clock input |
| Pin 15 | MCLR — Master Clear (active-low reset input) |
| Pin 16 | Vdd — Positive supply voltage |
| Pin 17 | RA0 — General-purpose I/O pin, port A bit 0 |
| Pin 18 | RA1 — General-purpose I/O pin, port A bit 1 |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
Typical Applications
PIC16C58BT-04E/SS is suitable for 6 applications: Home Appliance Control, Battery Charger Controller, LED Lighting Controller, Industrial Sensor Interface, Remote Control Transmitter, Educational Microcontroller Platform.
Home Appliance Control
The PIC16C58BT-04E/SS fits home appliance control (washing machines, microwaves, dishwashers) because its 4MHz 8-bit core delivers adequate processing power for sensor reads, motor control timing, and user-interface key scanning within the 3KB OTP program space. Its 12 I/O pins handle keypad matrix, seven-segment display drivers, and relay outputs for heating elements or valves. The -40°C to +125°C 'E' temperature grade tolerates the heat of oven-cabinet enclosures and unheated laundry-room installations, while the SSOP-20 footprint fits the compact control boards typical of modern white goods. Production-grade OTP is appropriate where firmware is finalized; per-unit cost advantages make it competitive in cost-sensitive consumer appliances shipped in millions of units annually.
Recommended
Battery Charger Controller
The PIC16C58BT-04E/SS is well suited to simple battery charger controllers for power tools, e-bikes, and consumer rechargeable devices. The 4MHz core, 12 I/O pins, and integrated Watchdog Timer support closed-loop charge-current regulation by reading shunt-amplifier ADC inputs and PWM-driving a MOSFET switch. The 73 bytes of RAM and 3KB OTP are sufficient to implement CC/CV (constant-current/constant-voltage) charge profiles with temperature-compensation lookup tables. The 'E' temperature grade of -40°C to +125°C handles the thermal environment inside enclosed charging stations. OTP memory prevents accidental firmware tampering, which is valuable for safety-critical charging algorithms that must not be modified in the field.
Recommended
LED Lighting Controller
The PIC16C58BT-04E/SS suits LED lighting controllers (RGB drivers, dimmers, architectural fixtures) thanks to its 12 I/O pins that drive multiple PWM channels for color mixing and brightness control. The 4MHz clock supports software PWM at frequencies above 100Hz, eliminating visible flicker in dimming applications. With 3KB OTP, designers can store multiple lighting scenes, fade patterns, and color-temperature presets. The wide -40°C to +125°C operating range covers outdoor and industrial fixture environments. The SSOP-20 package fits the constrained PCB areas typical of MR16, GU10, and linear LED tube form factors, while the OTP memory prevents reverse engineering of proprietary color algorithms.
Recommended
Industrial Sensor Interface
The PIC16C58BT-04E/SS handles industrial sensor interface applications such as 4-20mA loop transmitters, simple RTD conditioners, and digital panel meters. The 4MHz core reads multiplexed sensor inputs via comparator or external ADC, applies linearization in firmware, and drives 7-segment or LCD displays through the 12 I/O pins. The 'E' temperature grade of -40°C to +125°C accommodates outdoor instrumentation and factory-floor installations. The integrated Watchdog Timer (WDT) and Power-On Reset (POR) provide the supervisory functions required for unattended industrial deployments, while OTP memory locks the calibration coefficients at production time, preventing field tampering with measurement accuracy.
Recommended
Remote Control Transmitter
The PIC16C58BT-04E/SS is appropriate for IR/RF remote control transmitters in consumer electronics (TV, set-top box, ceiling fan, garage door opener). The 4MHz core generates the 38kHz carrier for IR modulation while encoding button presses from a 3x4 keypad matrix. With only 73 bytes of RAM and 3KB OTP, it can hold up to 50 button codes plus device pairing tables. Low-power CMOS operation is essential for battery-powered remotes lasting 1-2 years on a single coin cell. The SSOP-20 footprint fits inside slim remote enclosures, and the OTP memory prevents cloning of proprietary control protocols. The 'E' temperature rating supports outdoor garage-door and gate-control applications.
Recommended
Educational Microcontroller Platform
The PIC16C58BT-04E/SS serves as an educational platform for teaching embedded systems, assembly language, and RISC architecture concepts. The simple 33-instruction PIC16C5X instruction set lets students grasp core MCU concepts without the complexity of modern cores. The 4MHz clock and 3KB OTP are small enough that full programs fit on a single page of printed source code, making the part ideal for textbook examples and lab exercises. The 20-pin SSOP package is breadboard-friendly with an SSOP-to-DIP adapter. The 'E' temperature grade of -40°C to +125°C supports lab environments that lack climate control. However, the OTP nature means students need a UV eraser or must use a flash-based sibling (PIC16F57) for iterative lab assignments.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C58BT-04E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C58B-04I/SS | PIC16C58BT-04I/SS | PIC16C58BT-04/SS | PIC16C58B-20E/SS | PIC16C58B-40/SS | PIC16C58B-04/SS |
|---|---|---|---|---|---|---|---|
| Package | 20-SSOP (5.30 mm) | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same | 20-SSOP (5.30 mm) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 40 MHz | 4 MHz |
| Program Memory | 3 KB (2K x 12) OTP | 3 KB (2K x 12) OTP | 3 KB (2K x 12) OTP | 3 KB (2K x 12) OTP | 3 KB (2K x 12) OTP | 3 KB (2K x 12) OTP | 3 KB (2K x 12) OTP |
| Operating Temperature | -40°C to +125°C (E) | -40°C to +85°C (I) | -40°C to +85°C (I) | 0°C to +70°C (commercial) | -40°C to +125°C (E) | 0°C to +70°C (commercial) | 0°C to +70°C (commercial) |
| I/O Pins | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
| RAM Size | 73 bytes | 73 bytes | 73 bytes | 73 bytes | 73 bytes | 73 bytes | 73 bytes |
| Memory Type | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM | OTP EPROM |
Key Differentiators
- Extended industrial temperature range -40°C to +125°C (vs PIC16C58B-04I/SS)
- Higher 4MHz speed is sufficient for low-cost baseline designs (vs PIC16C58B-20E/SS (20MHz variant))
- Largest 3KB OTP program memory in PIC16C5X baseline family (vs PIC16C55A-04I/SS (smaller sibling))
Design Notes
OTP EPROM cannot be re-programmed. Validate firmware on a windowed PIC16C58B/JW (ceramic DIP with quartz window) or flash-based PIC16F57 development board before committing to OTP production parts. Once an OTP part is programmed, a firmware bug requires board re-work and chip replacement. Also, the PIC16C5X uses a 12-bit instruction word with 11-bit PC; do not confuse the device with PIC16F84 or PIC16F877A (14-bit mid-range) when porting code — the instruction set and memory map are different.
Estimated: At 4MHz with Vdd=5V, the PIC16C58BT-04E/SS typical active current is 1.8-2.2 mA, and sleep current is <1 µA (Watchdog disabled). For battery-powered designs, leverage the SLEEP instruction and use the Watchdog Timer wake-up source to achieve multi-year battery life on a coin cell. Place a 100 nF decoupling capacitor as close as possible to the Vdd pin (pin 16) with a short ground return to Vss (pin 11) to suppress switching noise from the internal clock tree.
Route the crystal traces (OSC1/OSC2, pins 12-13) short and symmetric to minimize parasitic capacitance; keep them away from high-current switching traces to prevent clock jitter. The MCLR pin (pin 15) should have a 10kΩ pull-up resistor to Vdd, optionally with a 100 nF capacitor for ESD debouncing — do not leave MCLR floating. Reserve one I/O pin (typically RB0) for in-system firmware verification on a development board, since OTP parts cannot be re-flashed after programming errors.
Compliance Information
RoHS/REACH compliance not explicitly stated in the verified web data; PIC16C5X OTP parts were originally designed before RoHS mandates. Contact Microchip for current RoHS-compliant equivalent (likely the PIC16F57). AEC-Q100 not applicable for general-purpose MCU.
