PIC16C62B-04I/SO - 8-Bit 4MHz OTP MCU 3.5KB | Microchip | SOIC-28
MPN: PIC16C62B-04I/SO ✗ Tapus ng BuhayPIC16C62B-04I/SO Ulas
An 8-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/EPROM/Flash), data RAM, and peripheral set (I/O, timers, serial) into one device. MCUs belong to the broader hierarchy of microcontrollers -> embedded processors -> semiconductors -> integrated circuits. PIC microcontrollers occupy the mid-range tier of Microchip's portfolio between baseline 12/16-bit instruction PIC10/12/16 cores and the high-performance PIC18/dsPIC/PIC32 lines. They are widely used in cost-sensitive embedded products where deterministic instruction execution, low power consumption, and small footprint outweigh the need for large memory or high-speed DSP.
Key features of the PIC16C62B include 22 digital I/O pins multiplexed across two ports (PORTA 5-bit, PORTB 8-bit), a 16-bit Timer1 with external crystal operation, an 8-bit Timer0 with programmable prescaler, a USART/SCI serial port, a Watchdog Timer with its own on-chip RC oscillator, and a 4-channel 8-bit Analog-to-Digital Converter (ADC). The device also supports in-circuit serial programming (ICSP) via RB6/RB7 and provides power-saving SLEEP mode plus an internal brown-out reset. The 14-bit wide instruction word allows single-word instructions for most operations, simplifying code density analysis.
Architecturally, the PIC16C62B uses a Harvard memory map with separate program and data buses, a 2-stage pipeline, and a fully static CMOS design that allows the oscillator to be stopped and restarted without losing state. The OTP EPROM program memory is windowless and one-time-programmable only - parts must be discarded after a programming error, making this family best suited to production runs rather than prototyping. The 4 MHz internal-execution rate derives from a divide-by-4 of the input oscillator, so a 4 MHz crystal yields 1 MIPS. At 5 V and 4 MHz, typical active current is around 2 mA and standby current drops below 1 uA.
Typical applications include industrial control logic, appliance control boards, sensor signal conditioning, motor control PWM loops, automotive body electronics (non-safety), security and access-control keypads, and legacy embedded products designed in the late 1990s and early 2000s. Because the PIC16C62B is OTP and mature, it is most often specified for re-orders of an existing design rather than new greenfield projects; new designs typically migrate to the flash-based PIC16F62X or PIC16F88X series for in-circuit reprogrammability.
Key design considerations include the OTP constraint (no firmware updates once sealed), the 4 MHz maximum internal rate (use -20 or -10 suffixes for higher speed), and the wide 28-SOIC footprint (pin-compatible with the flash PIC16F62X for board-level migration). When migrating code, verify that the chosen flash replacement matches the PIC16C62B's interrupt vector layout and ADC channel mapping.
This page synthesizes distributor stock, lead-time, and pricing across DigiKey, Mouser, Octopart, and LCSC, and adds drop-in alternative MPNs and design notes that go beyond the manufacturer datasheet summary.
Mga alternatibo na pwedeng ilagay na PIC16C62B-04I/SO — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok PIC16C62B-04I/SO (parehas na form factor at footprint) — pagkakaiba sa Package, RoHS Status, Instruction Set, Watchdog Timer, Program Memory Size.
PIC16C62B-04E/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C62B-04/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C62B-20I/SO
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16C62BT-04I/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C62AT-20I/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16F628A-I/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16F648A-I/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16C62B-04I/SO Mga Pinakamataas na Rating at Electrical Characteristics
| Core | PIC16 8-bit RISC |
| Program Memory Type | OTP EPROM |
| Program Memory Size | 3.5 KB (2K x 14) |
| RAM Size | 128 B |
| EEPROM Size | None (ROM-less data EEPROM) |
| Maximum CPU Frequency | 4 MHz (4 MIPS) |
| Instruction Set Width | 14-bit |
| Number of I/O Pins | 22 |
| Number of ADC Channels | 4 x 8-bit |
| Operating Voltage Range | 2.5 V to 6.0 V |
| Hanay ng Temperature na Operasyon | -40 C to +85 C (Industrial) |
| Packhaging | 28-SOIC (7.50 mm body, SO) |
| Uri ng Pagpapasok | Surface Mount |
| Timer Modules | Timer0 (8-bit), Timer1 (16-bit) |
| Serial Interface | USART/SCI |
| Watchdog Timer | Yes (with dedicated internal RC) |
| In-Circuit Programming | ICSP via RB6/RB7 |
Pin Configuration ng PIC16C62B-04I/SO
| Pin 1 | /MCLR/VPP — Master clear reset input (active low) or programming voltage |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog input channel 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / analog input channel 2 |
| Pin 5 | RA3/AN3/VREF — PORTA bit 3 / analog input channel 3 / ADC voltage reference |
| Pin 6 | RA4/T0CKI — PORTA bit 4 (open-drain) / Timer0 clock input |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / analog input channel 4 / slave select |
| Pin 8 | OSC2/CLKOUT — Oscillator crystal output / Fosc/4 clock output |
| Pin 9 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 10 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 11 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 module |
| Pin 12 | RC2/CCP1 — PORTC bit 2 / Capture-Compare-PWM module 1 |
| Pin 13 | RC3/SCK/SCL — PORTC bit 3 / SPI clock / I2C clock |
| Pin 14 | RC4/SDI/SDA — PORTC bit 4 / SPI data in / I2C data |
| Pin 15 | RC5/SDO — PORTC bit 5 / SPI data out |
| Pin 16 | RC6/TX/CK — PORTC bit 6 / USART transmit / USART clock |
| Pin 17 | RC7/RX/DT — PORTC bit 7 / USART receive / USART data |
| Pin 18 | VSS — Ground reference |
| Pin 19 | VDD — Positive power supply |
| Pin 20 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pin 21 | RB1 — PORTB bit 1 |
| Pin 22 | RB2 — PORTB bit 2 |
| Pin 23 | RB3 — PORTB bit 3 |
| Pin 24 | RB4 — PORTB bit 4 |
| Pin 25 | RB5 — PORTB bit 5 |
| Pin 26 | RB6/PGC — PORTB bit 6 / ICSP clock |
| Pin 27 | RB7/PGD — PORTB bit 7 / ICSP data |
| Pin 28 | VSS — Ground reference |
Tipikal na mga Gamit
PIC16C62B-04I/SO ay nararapat para sa 6 aplikasyons: Industrial Control Logic Board, Appliance Control Board, Automotive Body Electronics (Non-Safety), Security Keypad and Access Control, Sensor Signal Conditioning Module, Legacy Embedded Production Re-order.
Industrial Control Logic Board
The PIC16C62B-04I/SO suits industrial control logic boards thanks to its 22 digital I/O pins, 4-channel 8-bit ADC, and industrial -40 C to +85 C operating range. At 5 V and 4 MHz it consumes roughly 2 mA active, fitting conveyor controllers, pump sequencers, and machine-tool interlocks where deterministic 1 MIPS instruction execution simplifies ladder-logic-style firmware. The OTP EPROM is acceptable for high-volume production where firmware is fixed at release. Compared with switching to a flash MCU, the 4 MHz speed grade keeps EMI low and oscillator design simple in factory-floor enclosures. Use the brown-out reset and watchdog timer with internal RC for failsafe recovery in noisy industrial rails.
Inirekomenda
Appliance Control Board
The PIC16C62B-04I/SO is widely deployed in washing-machine, dishwasher, and HVAC control boards because its 28-SOIC package handles hand-soldered rework and its 2.5-6.0 V supply range accepts the noisy rectified mains rails of white goods. The 8-bit ADC reads thermistor and pressure sensor inputs while the 16-bit Timer1 generates triac-firing pulses for heater and motor phase control. OTP memory locks the appliance firmware to a single certified revision - exactly what regulatory and warranty teams require. Compared with flash MCUs the absence of reprogramming capability prevents field tampering of safety logic. Plan a separate last-time-buy inventory if migrating to PIC16F628A-I/SO to avoid production downtime.
Inirekomenda
Automotive Body Electronics (Non-Safety)
Although the PIC16C62B-04I/SO is not AEC-Q100 qualified, it has been used in non-safety automotive body-electronics applications such as interior lighting controllers, mirror-adjust modules, and seat-position switches that operate from a 12 V regulated bus down to 5 V. The 22 I/O drive seven-segment displays, keypad matrices, and LED bar-graph indicators. PIC microcontrollers are a long-standing choice in this segment because of their deterministic interrupt latency, which simplifies debounce logic for mechanical switch inputs. Note that for new automotive designs, AEC-Q100 qualified parts such as PIC16F1823-I/ST should be selected instead, as the OTP-based PIC16C62B is being phased out of automotive-grade portfolios.
Inirekomenda
Security Keypad and Access Control
The PIC16C62B-04I/SO is a classic choice for security-system keypads and access-control readers because its 22 I/O can matrix-scan a 4x4 keypad and drive a 7-segment or character LCD without external logic. The 128-byte RAM holds temporary PIN buffers and the OTP EPROM prevents malicious firmware modification once deployed. The hardware USART links to a central panel over RS-485, and the 16-bit Timer1 generates precise one-second timing for lockout delays. Compared with a generic 8-bit OTP MCU from another vendor, Microchip's PIC16 mid-range core gives sub-microsecond deterministic interrupt response, which is critical for matrix-scan debounce and tamper-detection inputs. Use the watchdog timer with its dedicated internal RC to recover from brown-out attacks.
Inirekomenda
Sensor Signal Conditioning Module
The PIC16C62B-04I/SO handles low-speed sensor signal conditioning by digitising analog inputs through its 4-channel 8-bit ADC and forwarding the result via USART to a host controller. A 4 MHz instruction rate is sufficient for 100 Hz sensor sampling and on-the-fly linearisation or thermistor-table lookup. Its industrial temperature range lets it sit next to the sensor in factory-floor enclosures. Because the PIC16C62B is OTP and cannot be firmware-updated, designers must validate the sensor calibration table thoroughly before sealing the part. For modern designs with field calibration needs, the flash-based PIC16F648A-I/SO with its 10-bit ADC and 7 KB program memory is the recommended migration path while retaining the same 28-SOIC footprint.
Inirekomenda
Legacy Embedded Production Re-order
The most common reason to specify PIC16C62B-04I/SO in 2026 is to honour an active production re-order for a legacy embedded product whose firmware, certification, and PCB layout are locked around this exact part. Because OTP EPROM cannot be reprogrammed and a tooling-change to a flash MCU requires full re-certification, many factories deliberately hold a 12 to 24 month last-time-buy inventory of PIC16C62B-04I/SO. The 28-SOIC package is well understood by contract manufacturers, and Microchip's cross-reference tool explicitly recommends the flash PIC16F628A-I/SO for new designs but not for re-orders. Engage Microchip franchised distributors for a current lead-time quotation and consider qualified aftermarket suppliers such as Rochester Electronics and Lansdale Semiconductor for additional buffer stock.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC16C62B-04I/SO — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC16C62B-04E/SO | PIC16C62B-04/SO | PIC16C62B-20I/SO | PIC16C62BT-04I/SO | PIC16F628A-I/SO | PIC16F648A-I/SO |
|---|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (7.50 mm) | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same | 28-SOIC (7.50 mm) - same |
| Program Memory Type | OTP EPROM 3.5 KB | OTP EPROM 3.5 KB - same | OTP EPROM 3.5 KB - same | OTP EPROM 3.5 KB - same | OTP EPROM 3.5 KB - same | Flash 3.5 KB | Flash 7 KB |
| RAM Size | 128 B | 128 B | 128 B | 128 B | 128 B | 224 B | 256 B |
| Max CPU Frequency | 4 MHz (1 MIPS) | 4 MHz (1 MIPS) | 4 MHz (1 MIPS) | 20 MHz (5 MIPS) | 4 MHz (1 MIPS) | 20 MHz (5 MIPS) | 20 MHz (5 MIPS) |
| Operating Temperature | -40 C to +85 C (Industrial) | -40 C to +125 C (Extended) | 0 C to +70 C (Commercial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) | -40 C to +85 C (Industrial) |
| ADC Resolution | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | 8-bit, 4 channels | No ADC (comparators only) | 10-bit, 8 channels |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND | Active | Active |
Pangunahing mga Pagkakaiba
- Industrial temperature grade in same 28-SOIC package as extended and commercial variants (kumpara saPIC16C62B-04E/SO)
- Pin-compatible with flash-based PIC16F628A-I/SO for future migration (kumpara saPIC16F628A-I/SO)
- 4 MHz speed grade covers most low-speed control; -20 speed grade gives headroom (kumpara saPIC16C62B-20I/SO)
Talaan ng Disenyo
PIC16C62B is OTP EPROM, not Flash - once programmed, the firmware cannot be erased or rewritten. Production code must be fully validated on a windowed ceramic sample (PIC16C62B-XX/JW) before committing to volume programming. OTP programming errors result in scrap, so budget 5-10% programming yield loss. Unlike flash MCUs, field firmware updates are impossible - if remote upgrade is needed, migrate to PIC16F628A-I/SO or PIC16F648A-I/SO on the same 28-SOIC footprint.
At 5 V and 4 MHz the PIC16C62B-04I/SO draws roughly 2 mA active and less than 1 uA in SLEEP mode per the manufacturer datasheet. The /MCLR pin must be held high through a 10 kohm pull-up to VDD; a direct connection to VDD is acceptable but adding the pull-up improves ESD and brown-out immunity. Decouple VDD with a 100 nF ceramic capacitor placed within 5 mm of the pin and a bulk 10 uF tantalum or aluminium on the same rail as the IC.
The 28-SOIC package has a 7.50 mm body width (wide-body), which is the same land pattern as the flash-based PIC16F62X and PIC16F648A-I/SO - this enables layout-reuse migration. Place the 4 MHz crystal or resonator within 5 mm of OSC1/OSC2 (pins 9 and 10) with short traces to minimise stray capacitance. Keep the ICSP lines RB6/PGC (pin 26) and RB7/PGD (pin 27) accessible on the board so production programming does not require pin-clip adapters.
The PIC16C62B-04I/SO in industrial -40 C to +85 C grade is rated for typical embedded environments without special heatsinking. Estimated: at 5 V and 4 MHz active, internal dissipation is below 20 mW, well within the SOIC-28 theta_JA of approximately 85 C/W. Industrial designs using the full temperature range should still verify self-heating in enclosed housings - the SOIC-28 plastic package is rated for a maximum junction temperature of 150 C and derate linearly above 25 C ambient.
Impormasyon ng Pagsunod sa Kautusan
RoHS, REACH, lead-free and halogen-free status not explicitly stated in the verified distributor data. Microchip Technology publishes compliance information on the product page; this should be cross-checked before use in RoHS-restricted markets. Not AEC-Q100 qualified - choose PIC16F1823-I/ST for new automotive designs. Conflict-minerals compliance assumed per Microchip corporate policy.
