PIC16CE625T-04I/SS
PIC16CE625T-04I/SS - 8-bit PIC MCU, 3.5KB OTP, 4MHz | Microchip
The Microchip Technology PIC16CE625T-04I/SS is an 8-bit CMOS RISC microcontroller from the PIC16CE62X family, integrating 3.5KB (2K x 14 words) of One-Time Programmable (OTP) program memory and 128 bytes of data SRAM plus 128 bytes of EEPROM data memory, housed in a 20-pin SSOP package. It operates from 3.0V to 5.5V with a maximum clock speed of 4 MHz and provides 13 digital I/O lines, two analog comparators, a watchdog timer, brown-out reset, power-on reset, and a capture/compare/PWM module. The 'T' suffix indicates Tape & Reel packaging, '04' denotes the 4 MHz speed grade, and 'I' signifies the industrial -40C to +85C operating temperature range. The 20-SSOP form factor measures 7.50 mm x 5.30 mm with 0.65 mm pitch, fitting standard surface-mount assembly.
An 8-bit microcontroller (MCU) is a single-chip computer with an 8-bit data bus, integrating a CPU, memory, and peripherals. The PIC16CE62X family belongs to Microchip's PICmicro mid-range architecture, which sits hierarchically within the broader categories: 8-bit MCU -> microcontroller -> embedded processor -> semiconductor. These devices use a Harvard RISC architecture that executes one instruction per clock cycle (except branches), making them highly deterministic and efficient for low-power embedded control. The 'CE' suffix indicates the family integrates on-chip EEPROM data memory alongside OTP program memory, distinguishing it from 'C' OTP-only and 'F' Flash variants.
Key features include 35 instructions, 14-bit instruction word, 8-level hardware stack, 4 oscillator modes (RC, XT, HS, LP), 2 analog comparators with programmable reference, 8-bit timer/counter with 8-bit prescaler, one 16-bit timer/counter, 2 capture/compare/PWM modules, in-circuit serial programming (ICSP), and an internal brown-out reset circuit. Power consumption is typically <2 mA active at 4 MHz/5V and <1 uA standby, which suits battery-backed and always-on designs.
The PIC16CE625 architecture combines a 14-bit RISC CPU with dual-bus Harvard memory, allowing simultaneous instruction fetch and data access. The integrated on-chip EEPROM (128 bytes) provides non-volatile user data storage distinct from program memory, useful for storing calibration values, configuration parameters, or runtime counters that survive power cycles. The OTP program memory (3.5KB) supports low-cost production programming, while the peripheral set (comparators, CCP, timers, USART) addresses typical embedded control tasks.
Typical applications include remote controls, sensor interfaces, low-cost consumer appliances, security alarm panels, automotive body electronics, and industrial control boards. Its EEPROM-backed data retention makes it a fit for designs needing non-volatile user parameter storage. When designing with this device, ensure decoupling capacitors (100 nF + 10 uF) are placed within 5 mm of VDD, and that the MCLR pin is pulled up through 10 kohm with optional 100 nF noise suppression.
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