PIC16C58B-04E/SS - 8-Bit 4MHz OTP MCU | Microchip
MPN: PIC16C58B-04E/SS ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.08 | $30.80 |
| 100 | $2.74 | $274.00 |
| 500 | $2.39 | $1,195.00 |
| 1,000 | $2.05 | $2,050.00 |
PIC16C58B-04E/SS Overview
An 8-bit OTP microcontroller (One-Time-Programmable microcontroller) is a compact computing device that integrates a CPU, non-volatile EPROM program memory, RAM, and peripherals on a single CMOS die. Unlike flash-based MCUs, OTP memory can be programmed exactly once and is favored for low-cost, high-volume embedded products where firmware is finalized at production. The PIC16C5X sits at the entry-level node of the 8-bit microcontroller hierarchy: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor, making it the lowest-cost member of the Microchip PIC family.
Key features of the PIC16C58B-04E/SS include an operating voltage range of 3.0 V to 5.5 V, an extended industrial operating temperature range of -40 °C to +125 °C (E suffix), on-chip Power-On Reset (POR), a Watchdog Timer (WDT) with dedicated on-chip RC oscillator, and a 12-bit-wide instruction set with 33 single-cycle instructions. The device supports DC to 4 MHz clock input, has 8-level hardware stack, and offers low-power CMOS operation. The 20-SSOP package follows the SSOP family -> surface mount -> SMD hierarchy.
The PIC16C58B-04E/SS uses Microchip's classic 14-bit instruction core scaled to a 12-bit opcode for the PIC16C5X baseline architecture, providing deterministic single-cycle execution except for program branches which take two cycles. Internal 8-bit data paths feed 25 to 73 bytes of general-purpose RAM depending on configuration, while the 3 KB EPROM stores up to 2048 12-bit instructions, ample for simple control loops, timing logic, and glue-replacement tasks.
Typical applications include automotive body electronics and appliance control subsystems, low-cost consumer white goods, industrial sensor interfaces, LED driver controllers, and remote control transmitters. Designers choose this part when the lowest unit cost and proven long-term availability outweigh the need for in-system reprogrammability. The E temperature grade extends operating range from -40 °C to +125 °C, supporting under-hood automotive and industrial cabinet environments.
When designing with the PIC16C58B-04E/SS, note that OTP memory cannot be erased or rewritten, so firmware must be fully validated on a compatible windowed or flash prototype (e.g., PIC16F58) before committing to OTP programming. The -04 speed suffix denotes 4 MHz maximum oscillator input; do not substitute with -10 or -20 parts when the PCB layout does not match. The 'E' suffix denotes the extended -40 °C to +125 °C temperature range required for many automotive and industrial specifications.
This page synthesizes distributor pricing, drop-in OTP MCU alternatives, and practical design notes (POR, WDT, oscillator selection) not aggregated in the manufacturer datasheet.
Drop-in alternatives for PIC16C58B-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 PIC16C58B-04E/SS (same form factor and footprint) — differing in Program Memory Size, Program Memory Type, Core Architecture, Operating Temperature Range, Timers.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
PIC16C58B-04/SS
✅ Drop-In✓ In Stock
$1.45 / Unit
View Datasheet →PIC16C57C-04/SS
✅ Drop-In✓ In Stock
$4.85 / Unit
View Datasheet →PIC16C57C-04E/SS
✅ Drop-In✓ In Stock
$2.85 / Unit
View Datasheet →PIC16C58B-04I/SS
✅ Drop-In✓ In Stock
$1.38 / Unit
View Datasheet →PIC16C58B-04E/SS Maximum Ratings & Electrical Characteristics
| Family | PIC16C5X |
| Core Architecture | 8-bit RISC (PIC16) |
| Program Memory Type | EPROM (OTP, one-time programmable) |
| Program Memory Size | 3 KB (2K x 12) instructions |
| Maximum Clock Frequency | 4 MHz |
| Operating Voltage Range | 3.0 V to 5.5 V |
| Operating Temperature Range | -40 °C to +125 °C (E suffix, extended) |
| Instruction Set | 33 single-word instructions, 12-bit opcodes |
| Package Type | 20-pin SSOP (5.30 mm body width, 0.65 mm pitch) |
| Package Code | SSOP-20 |
| Mounting Type | Surface Mount |
| Peripherals | Power-On Reset (POR), Watchdog Timer (WDT) |
| Process Technology | CMOS |
| Speed Grade | -04 (4 MHz maximum oscillator) |
PIC16C58B-04E/SS Pin Configuration
| Pin 1 | RA2 — Bidirectional I/O port A bit 2 |
| Pin 2 | RA3 — Bidirectional I/O port A bit 3 |
| Pin 3 | RA4/T0CKI — Bidirectional I/O port A bit 4 / Timer 0 clock input |
| Pin 4 | MCLR — Master clear reset input (active low) |
| Pin 5 | VSS — Ground reference |
| Pin 6 | RB0/INT — Bidirectional I/O port B bit 0 / External interrupt |
| Pin 7 | RB1 — Bidirectional I/O port B bit 1 |
| Pin 8 | RB2 — Bidirectional I/O port B bit 2 |
| Pin 9 | RB3 — Bidirectional I/O port B bit 3 |
| Pin 10 | RB4 — Bidirectional I/O port B bit 4 |
| Pin 11 | RB5 — Bidirectional I/O port B bit 5 |
| Pin 12 | RB6 — Bidirectional I/O port B bit 6 |
| Pin 13 | RB7 — Bidirectional I/O port B bit 7 |
| Pin 14 | VSS — Ground reference (secondary) |
| Pin 15 | OSC2/CLKOUT — Oscillator output / Clock output |
| Pin 16 | OSC1/CLKIN — Oscillator input / External clock input |
| Pin 17 | RA0 — Bidirectional I/O port A bit 0 |
| Pin 18 | RA1 — Bidirectional I/O port B bit 1 |
| Pin 19 | VSS — Ground reference |
| Pin 20 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
Typical Applications
PIC16C58B-04E/SS is suitable for 6 applications: Automotive Body Electronics Modules, Consumer Appliance Control Boards, Industrial Sensor Interface Modules, LED Driver and Lighting Controllers, Remote Control and IR Transmitter Encoders, Glue Logic and ASIC Replacement Modules.
Automotive Body Electronics Modules
The PIC16C58B-04E/SS fits automotive body electronics because the E suffix extends operating temperature to -40 °C to +125 °C, satisfying cabin and under-hood thermal envelopes without active cooling. Its 3 KB (2K x 12) OTP EPROM stores trimmed control firmware for seat controllers, window lift modules, mirror adjusters, and simple lighting drivers. The on-chip Power-On Reset (POR) and Watchdog Timer (WDT) provide deterministic startup and recovery behavior required by body-module safety integrity. Unlike flash MCUs that require firmware update paths, the PIC16C58B's one-time-programmable EPROM minimizes die cost, which matters when each vehicle integrates 20 to 30 body modules. The 4 MHz core and 33 single-cycle instructions deliver deterministic interrupt latency for time-critical body-control loops. Designers should target the PIC16C58B-04E/SS for AEC-Q100 informational-only modules and use Q1-suffixed automotive parts for safety-critical functions.
Recommended
Consumer Appliance Control Boards
The PIC16C58B-04E/SS suits white-goods and small-appliance controllers where unit-cost minimization is paramount and firmware is finalized at production. Its 3 KB OTP EPROM stores timed sequences for washing-machine motor profiles, microwave oven user interfaces, dishwasher cycle logic, and rice-cooker thermal control, while the 33 single-cycle 12-bit instructions yield compact code that fits in the 2K x 12 program word space. The 3.0 V to 5.5 V VDD range allows direct connection to rectified 5 V rails without additional regulators, reducing BOM. The 4 MHz maximum clock speed is sufficient for human-interface timing loops (button debouncing, LED multiplexing, relay sequencing). The E temperature grade supports under-cabinet and garage-appliance thermal envelopes. Designers benefit from the PIC16C58B's mature, low-risk PIC16C5X family with 20+ years of production history and stable long-term supply.
Recommended
Industrial Sensor Interface Modules
The PIC16C58B-04E/SS is well-matched to industrial 4-20 mA sensor transmitters, thermocouple conditioning front-ends, and limit-switch aggregators because its on-chip POR and WDT handle factory-floor brownouts and EMI-induced lockups without external reset supervisors. The 4 MHz core and 33-instruction RISC core provide ample throughput for 8-bit ADC scanning, HART-like pulse modulation, and digital filtering routines in the 3 KB OTP memory. The extended -40 °C to +125 °C operating temperature range supports cabinet and field-mount installations. The 20-SSOP package offers a compact footprint for in-head transmitter enclosures. The low-power CMOS process technology keeps quiescent current low for loop-powered 4-20 mA devices. Choose the PIC16C58B-04E/SS over flash MCUs when the sensor module firmware is finalized and the BOM cost dominates the channel count.
Recommended
LED Driver and Lighting Controllers
The PIC16C58B-04E/SS drives low-to-mid-complexity LED controllers including RGB strip controllers, dimmer panels, signage animators, and decorative lighting sequencers. The 4 MHz maximum clock and 33-instruction RISC core generate precise PWM dimming waveforms with 8-bit resolution at typical 1 kHz refresh rates, while the 3 KB OTP EPROM stores chase patterns and color tables. The 3.0 V to 5.5 V VDD range allows direct connection to 5 V LED driver rails and 3.3 V Bluetooth-module co-processor logic. The Watchdog Timer recovers the controller from brownout events common in switched-mode LED supplies. The 20-SSOP package fits in small inline LED-strip controllers. Choose the PIC16C58B-04E/SS over larger flash MCUs when the lighting program is fixed at production and the BOM cost must stay below $1 for the controller IC.
Recommended
Remote Control and IR Transmitter Encoders
The PIC16C58B-04E/SS is widely deployed in low-cost IR/RF remote control transmitters for TV, set-top box, fan, and air-conditioner applications. Its 3 KB OTP EPROM stores the encoding protocol (RC5, NEC, SIRC, proprietary), button matrix scan logic, and LED-indicator patterns within the 2K x 12 instruction space. The 33 single-cycle instructions and 4 MHz oscillator generate accurate 38 kHz / 40 kHz / 56 kHz carrier frequencies with minimal jitter, improving receiver sensitivity. The CMOS low-power design minimizes battery drain in handheld remotes. The 20-SSOP package offers a low-profile footprint behind thin remote housings. The PIC16C5X family has decades of stable production, ensuring long-term availability for consumer-electronics remote-control SKUs. Choose the PIC16C58B-04E/SS over flash MCUs when the encoding protocol is finalized and unit cost dominates.
Recommended
Glue Logic and ASIC Replacement Modules
The PIC16C58B-04E/SS replaces discrete CMOS glue logic (gates, flip-flops, counters, one-shots) in cost-sensitive designs by integrating 33 programmable instructions and 3 KB OTP EPROM on a single die. Common targets include replacement of 74HC-series logic for industrial control panels, custom timing relays, security keypad scanners, and electronic lock sequencers. The on-chip POR and WDT eliminate external reset and supervisory ICs, reducing BOM part count. The 4 MHz instruction throughput executes simple state machines in microseconds, faster than discrete logic at comparable cost. The 20-SSOP package allows dense PCB layout in space-constrained control modules. Choose the PIC16C58B-04E/SS when firmware replaces 4 to 10 discrete logic ICs and the design benefits from single-IC re-programmability (in OTP-equivalent prototypes via PIC16F58) without per-board firmware rework.
Recommended
Recommended Products Summary
Engineering reference data for PIC16C58B-04E/SS — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | PIC16C58B-04/SS | PIC16C57C-04/SS | PIC16C57C-04E/SS |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Program Memory | 3 KB (2K x 12) OTP | 3 KB OTP - same | 2 KB OTP (-33%) | 2 KB OTP (-33%) |
| Maximum Clock | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Operating Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V - same | 3.0 V to 5.5 V - same | 3.0 V to 5.5 V - same |
| Operating Temperature | -40 °C to +125 °C (E) | -40 °C to +85 °C (industrial) | -40 °C to +85 °C (industrial) | -40 °C to +125 °C (E) - same |
| Instruction Set | 33 single-cycle 12-bit | 33 single-cycle 12-bit - same | 33 single-cycle 12-bit - same | 33 single-cycle 12-bit - same |
| POR + WDT | Yes (on-chip) | Yes - same | Yes - same | Yes - same |
| Lifecycle Status | NRND | NRND | NRND | NRND |
Key Differentiators
- Extended -40 °C to +125 °C operating temperature range (vs PIC16C58B-04/SS)
- Larger program memory than PIC16C57C baseline (vs PIC16C57C-04E/SS)
- On-chip POR and WDT reduce BOM cost (vs PIC16F58 (flash equivalent))
Design Notes
The PIC16C58B-04E/SS operates from 3.0 V to 5.5 V and integrates an on-chip Power-On Reset (POR) plus a Watchdog Timer (WDT) with a dedicated internal RC oscillator. Place a 100 nF decoupling capacitor as close as possible to the VDD pin (pin 20) and a bulk 10 µF capacitor at the regulator output to suppress the inrush transients that can falsely trigger the POR threshold. For battery-powered designs, the WDT timeout is independent of the system clock, so it can wake the MCU from sleep even if the main oscillator has not stabilized. Estimated: typical quiescent current in sleep mode for the PIC16C5X family is below 4 µA at 5 V, based on family datasheet characterization.
OTP EPROM cannot be erased or rewritten, so all firmware must be fully validated on a windowed (PIC16C58B with quartz window) or flash-equivalent prototype (PIC16F58) before committing to OTP programming. The -04 speed suffix limits the maximum oscillator input to 4 MHz; do not populate a 10 MHz or 20 MHz crystal — the device will not start reliably at higher clock rates. Configuration bits (oscillator selection, WDT enable, code protection) are programmed simultaneously with the OTP memory and cannot be changed later. Always order 5 to 10 percent extra PIC16C58B-04E/SS parts for prototype rework and final-assembly yield loss.
The 20-SSOP package has a 0.65 mm lead pitch and 5.30 mm body width — route all signals on inner PCB layers with 0.20 mm trace width and use a 4-layer stackup with a dedicated ground plane beneath the MCU to minimize EMI coupling into the oscillator traces. Place the crystal or resonator within 5 mm of pins 15 and 16 (OSC2/CLKOUT and OSC1/CLKIN), with a grounded guard ring around the oscillator traces to reduce stray capacitance. The MCLR pin (pin 4) requires a 10 kΩ pull-up to VDD and a 100 nF capacitor to ground for noise-immune reset behavior. Keep high-current switching traces (relay drivers, LED PWM) away from the VDD and VSS pins to avoid digital noise coupling into the analog POR reference.
The PIC16C58B-04E/SS is rated for -40 °C to +125 °C operating temperature (E suffix), but CMOS static power dissipation in this 8-bit core is well below 100 mW even at full 4 MHz clock. The thermal design challenge in PIC16C5X applications is rarely junction temperature; instead it is oscillator start-up behavior at cold temperatures below -20 °C and WDT timer drift across the full -40 °C to +125 °C envelope. Verify crystal start-up time at your minimum operating temperature, because ESR rises sharply below -20 °C and can prevent oscillation. Estimated: the PIC16C5X internal WDT uses an on-chip RC oscillator with ±30 percent tolerance across temperature, which is adequate for recovery but not for precision timing.
Compliance Information
Compliance information not present in the Verified Web Data; check Microchip product page (https://www.microchip.com/en-us/product/PIC16C58B) or contact Microchip for current RoHS/REACH/AEC-Q100 status. The 'E' suffix denotes extended operating temperature grade, not AEC-Q100 qualification.
