PIC16CE625-04E/P - 8-bit OTP MCU 3.5KB | Microchip
MPN: PIC16CE625-04E/P ✓ NakahandaPIC16CE625-04E/P Ulas
A microcontroller (MCU) is a single-chip computer that integrates a CPU, non-volatile program memory, working RAM, and peripherals onto one die. The PIC16C/PIC16CE family belongs to the broader hierarchy: 8-bit microcontroller -> RISC microcontroller -> embedded controller -> semiconductor IC. MCUs are the computational core of nearly every embedded product, and the PIC16CE62X sub-family specifically targets cost-sensitive applications that need a small OTP code footprint plus on-chip EEPROM for parameter storage.
Key features of the PIC16CE625-04E/P include 128 bytes of data RAM, 13 general-purpose digital I/O pins, a maximum clock speed of 4 MHz (200 ns instruction cycle), an enhanced 8-bit timer/counter (Timer0/Timer1), an analog comparator with two inputs, internal/external interrupt sources, and a Watchdog Timer (WDT) for safe recovery from firmware faults. Power management is handled by Brown-out Detect/Reset (BOD), Power-On Reset (POR), and a programmable code-protection bit, all critical for unattended industrial or appliance designs.
Technically, the device executes 35 single-word instructions at 200 ns per instruction (except program branches, which take two cycles). The OTP program memory is organized as 2K x 14 bits (3.5KB), suitable for compact state machines and sensor interface firmware. The integrated EEPROM data memory provides non-volatile parameter storage, eliminating external EEPROM chips in many designs. Operating voltage spans 3.0 V to 5.5 V, making the part compatible with both 3.3 V and 5 V logic rails.
Typical applications include white-goods and appliance control boards, security-system keypads and sensors, low-end remote controls, automotive interior sub-modules (under-the-dash comfort modules, lighting controllers), and industrial counter/timer boards. The PIC16CE625-04E/P is also widely used as a drop-in upgrade for legacy PIC16C620/621 designs where EEPROM storage and the analog comparator are required.
When designing with this part, allocate one I/O line for the MCLR/VPP reset function and ensure the 4 MHz oscillator is paired with the recommended 22 pF ceramic or 33 pF crystal load capacitors; deviations beyond 20% will degrade frequency stability at temperature extremes.
This page synthesizes current distributor pricing, drop-in same-package alternatives from both Microchip and competitor brands, and practical design notes that go beyond the manufacturer datasheet to support procurement and design engineers.
Mga alternatibo na pwedeng ilagay na PIC16CE625-04E/P — 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 PIC16CE625-04E/P (parehas na form factor at footprint) — pagkakaiba sa Package, Timers, I/O Pins, Program Memory Size, Core Architecture.
PIC16CE625-04I/P
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16CE625-04/P
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16CE625-20/P
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16CE625-04E/SO
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16CE624-04/P
✅ Drop-InMagkontak para sa presyo
Tingnan ang Datasheet →PIC16CE623-04/P
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
PIC16CE625-04E/P Mga Pinakamataas na Rating at Electrical Characteristics
| Product Type | 8-bit RISC Microcontroller (MCU) |
| Series | PIC16C (PIC16CE62X sub-family) |
| Core Architecture | PIC16C, 14-bit instruction word, Harvard |
| Program Memory | 3.5 KB (2K x 14) OTP |
| Data Memory (RAM) | 128 bytes |
| EEPROM Data Memory | Integrated on-die |
| Maximum Clock Speed | 4 MHz |
| Instruction Cycle Time | 200 ns (single-cycle, 4 MHz clock) |
| Instruction Set | 35 single-word instructions |
| Supply Voltage (VDD) | 3.0 V to 5.5 V |
| I/O Pins | 13 (general-purpose, bidirectional) |
| Timers | Timer0 (8-bit), Timer1 (16-bit with capture/compare/PWM) |
| Analog Peripherals | 1 on-chip analog comparator (2 inputs) |
| Reset & Supervision | Power-On Reset (POR), Brown-out Detect/Reset (BOD), MCLR |
| Watchdog Timer (WDT) | Yes, software-enabled |
| Interrupts | Internal + external sources |
| Packhaging | 18-pin PDIP (0.300 inch, 7.62 mm) through-hole |
| Uri ng Pagpapasok | Through-Hole (THT) |
| Lead-Free / RoHS | Compliant per Microchip product page |
Pin Configuration ng PIC16CE625-04E/P
| Pin 1 | MCLR/VPP — Master Clear (reset) input / programming voltage input |
| Pin 2 | RA0/AN0 — PORTA bit 0 / analog comparator input |
| Pin 3 | RA1/AN1 — PORTA bit 1 / analog comparator input |
| Pin 4 | RA2/AN2/VREF — PORTA bit 2 / analog comparator output / voltage reference |
| Pin 5 | RA3/AN3/C1OUT — PORTA bit 3 / comparator 1 output |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input |
| Pin 7 | RA5/SS/AN4 — PORTA bit 5 / SPI slave select / analog input |
| Pin 8 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 9 | OSC2/CLKOUT — Oscillator crystal output / clock output |
| Pin 10 | VSS — Ground reference |
| Pin 11 | VDD — Positive supply voltage (3.0 V to 5.5 V) |
| Pin 12 | RB0/INT — PORTB bit 0 / external interrupt input |
| Pin 13 | RB1 — PORTB bit 1 |
| Pin 14 | RB2 — PORTB bit 2 |
| Pin 15 | RB3/PGM — PORTB bit 3 / low-voltage programming input |
| Pin 16 | RB4 — PORTB bit 4 |
| Pin 17 | RB5 — PORTB bit 5 |
| Pin 18 | RB6/PGC — PORTB bit 6 / ICSP clock |
Tipikal na mga Gamit
PIC16CE625-04E/P ay nararapat para sa 6 aplikasyons: White-Goods and Appliance Control, Security System Keypads and Sensor Hubs, Remote Control and IR Transmitter Boards, Automotive Interior Sub-Modules, Industrial Counter and Timer Modules, HVAC Thermostat Control Boards.
White-Goods and Appliance Control
The PIC16CE625-04E/P's 3.5 KB OTP program memory, on-chip EEPROM data memory, and 13 GPIO pins are well-matched to washing machines, dishwashers, and microwave oven controller boards. The integrated EEPROM eliminates external 24C-series EEPROM ICs for parameter storage (wash cycles, error logs, user preferences), reducing BOM cost by $0.15-0.40 per board. The 4 MHz clock and 35-instruction RISC core execute appliance state machines in <1 ms loop time, while the Watchdog Timer and Brown-out Reset protect against firmware lockup during brown-out events common with inductive motor loads. The extended -40C to +125C temperature grade survives under-the-dash or inside-cabinet thermal stress.
Inirekomenda
Security System Keypads and Sensor Hubs
In PIR motion sensors, glass-break detectors, and keypad entry modules, the PIC16CE625-04E/P runs the detection algorithm, drives LED indicators, and supervises battery voltage via its analog comparator. The 13 GPIO lines easily accommodate the PIR output, alarm relay driver, status LEDs, and a 4x4 keypad matrix scan. Brown-out Detect ensures a clean shutdown on low battery, while the integrated EEPROM stores zone configuration and tamper flags through power cycles. The 3.0-5.5 V supply range matches 3.6 V lithium battery packs and 5 V regulated supplies alike, simplifying the analog front-end design.
Inirekomenda
Remote Control and IR Transmitter Boards
Universal TV, set-top box, and HVAC remote controls benefit from the PIC16CE625-04E/P's low pin count, 4 MHz operation, and integrated EEPROM for storing paired device codes. The 35-instruction RISC core executes NEC/RC5/RC6 IR protocols in real time with cycle-accurate timing, while the 128-byte RAM holds the current transmission buffer and key-debounce state. The 13 GPIO pins drive a 7x5 key matrix plus status LEDs without an external I/O expander. Operating from 2xAA batteries (3.0 V) up to USB-powered 5 V, this part matches the typical remote-control supply window.
Inirekomenda
Automotive Interior Sub-Modules
The PIC16CE625-04E/P's 'E' (extended) temperature grade and -40C to +125C operating range suit interior automotive modules such as seat-position memories, mirror controllers, and ambient lighting nodes. The integrated EEPROM retains seat/mirror positions through battery disconnect, and the analog comparator monitors the load-current shunt for short-circuit protection. The 13 GPIO interface to LIN (Local Interconnect Network) transceiver ICs and PWM-driven LED strings, while the WDT recovers the MCU from automotive load-dump transients. AEC-Q100 screening is not formally part of this part, but the temperature and ESD margins meet many OEM non-safety sub-system requirements.
Inirekomenda
Industrial Counter and Timer Modules
Production-line counters, pump-cycle timers, and process-event loggers deploy the PIC16CE625-04E/P to count pulses from optical encoders or flow meters and store elapsed-time totals in EEPROM. The 16-bit Timer1 module with capture input pins handles quadrature decoding or frequency measurement up to 4 MHz, while the on-chip comparator provides zero-crossing detection for 50/60 Hz line-frequency monitoring. The 13 GPIO pins drive 7-segment displays via external shift registers or directly multiplex 4-digit LED readouts. The 3.0-5.5 V supply rails accommodate 24 V industrial bus systems with simple linear regulation.
Inirekomenda
HVAC Thermostat Control Boards
Thermostat and HVAC zone controller boards use the PIC16CE625-04E/P for temperature polling, schedule storage, and relay switching of fan/heat/cool stages. The on-chip EEPROM stores user-setpoint schedules and installer configuration across power cycles, while the analog comparator interfaces directly to 10K NTC thermistor divider networks for low-cost temperature sensing. Brown-out Detect ensures graceful restart after brief power interruptions common with HVAC contactor switching, and 13 GPIO drive the LCD segments, pushbuttons, and relay coils without an external I/O expander.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for PIC16CE625-04E/P — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | PIC16CE625-04I/P | PIC16CE625-04/P | PIC16CE625-20/P | PIC16CE624-04/P | PIC16CE623-04/P |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 18-PDIP (0.300 in) | 18-PDIP (0.300 in) - same | 18-PDIP (0.300 in) - same | 18-PDIP (0.300 in) - same | 18-PDIP (0.300 in) - same | 18-PDIP (0.300 in) - same |
| Program Memory | 3.5 KB OTP (2K x 14) | 3.5 KB OTP | 3.5 KB OTP | 3.5 KB OTP | 875 B OTP | 512 B OTP |
| EEPROM Data Memory | 128 bytes on-chip | 128 bytes | 128 bytes | 128 bytes | 128 bytes | 128 bytes |
| Maximum Clock Speed | 4 MHz | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 4 MHz |
| Temperature Grade | Extended -40C to +125C (E) | Industrial -40C to +85C | Commercial 0C to +70C | Commercial 0C to +70C | Commercial 0C to +70C | Commercial 0C to +70C |
| GPIO Count | 13 | 13 | 13 | 13 | 13 | 13 |
| Supply Voltage | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V | 3.0 V to 5.5 V |
| Approx. Unit Price (qty 1) | $3.85 | $3.65 | $2.95 | $3.20 | $2.40 | $2.10 |
Pangunahing mga Pagkakaiba
- Integrated EEPROM data memory eliminates external EEPROM IC (kumpara saPIC16C711-04/P)
- Extended automotive temperature grade (-40C to +125C) (kumpara saPIC16CE625-04/P (commercial grade))
- 4 MHz speed grade optimized for low-EMI cost-sensitive designs (kumpara saPIC16CE625-20/P (20 MHz grade))
- Larger 3.5 KB OTP memory within the PIC16CE62X sub-family (kumpara saPIC16CE624-04/P (875 B) and PIC16CE623-04/P (512 B))
Talaan ng Disenyo
Place a 0.1 uF ceramic decoupling capacitor as close as physically possible to the VDD pin (pin 11) and a bulk 10 uF tantalum or aluminum polymer capacitor on the same node. The PIC16CE62X family draws brief inrush currents up to 30 mA during EEPROM write cycles; a poorly decoupled supply can trigger brown-out resets. Add a 10 kohm pull-up on the MCLR/VPP pin (pin 1) to ensure clean reset behavior during power-up ramps. Series-inject a small ferrite bead if the supply is shared with relay coils or motor drivers to suppress inductive transients reaching the MCU.
Route the crystal traces (OSC1/OSC2, pins 8/9) as short, symmetrical loops with a grounded guard trace on each side. Keep the crystal within 10 mm of the MCU package, and avoid routing high-current or high-frequency digital signals (PWM, relay drive) parallel to or under the crystal traces. The 18-pin PDIP through-hole footprint gives excellent mechanical stability but expect ~2.5 mm lead length - plan for through-hole pad spacing of 2.54 mm (0.100 inch) on the PCB. Keep analog comparator inputs (RA0-RA2) routed away from switching nodes to avoid coupling into the comparator threshold.
Do not exceed the 4 MHz clock input on this -04 speed grade - the part is specified for 4 MHz maximum at the extended temperature range, and pushing to 8 MHz will produce unreliable EEPROM writes and may corrupt program counter state. Always disable the Watchdog Timer (WDTE config bit cleared) when developing on the PIC16CE625-04E/P, otherwise unexpected resets every ~18 ms (typical WDT period) will frustrate debug sessions. Finally, EEPROM endurance erases is rated at 100K write cycles minimum; if your application stores data continuously (e.g., event counters), either wear-level across multiple bytes or move state to external FRAM.
Assign a dedicated ground pour under the MCU and stitch it with vias on a 5-10 mm grid for thermal and electrical return paths. The through-hole PDIP dissipates only modest power (typically <100 mW active), so a 1 oz copper pour is sufficient. If using ICSP (In-Circuit Serial Programming), reserve the RB6/PGC and RB7/PGD pins in your layout and provide a 6-pin header (or 0.1 inch test points) accessible without removing the PCB from the enclosure. Mark pin 1 with a silkscreen dot or chamfered corner to prevent backward insertion during production.
Impormasyon ng Pagsunod sa Kautusan
RoHS and REACH compliant per Microchip product page. AEC-Q100 not formally qualified; however, the 'E' temperature grade (extended -40C to +125C) is automotive-style. For formally AEC-Q100-qualified Microchip MCUs in similar pin counts, see PIC16F1936-I/P or PIC16F18855-I/P.
