PIC16C662T-04E/PT - 8-bit MCU, 7KB OTP, 33 I/O | Microchip
料号： PIC16C662T-04E/PT ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $9.85 | $9.85 |
| 10 | $9.2 | $92.00 |
| 100 | $8.1 | $810.00 |
| 500 | $7.05 | $3,525.00 |
| 1,000 | $6.2 | $6,200.00 |
PIC16C662T-04E/PT 概述
An 8-bit microcontroller (MCU) is a small programmable computer on a single integrated circuit that combines a CPU, memory, and peripherals. Within the broader semiconductor hierarchy, MCUs belong to microcontrollers -> microcomputers -> processors -> semiconductors. The PIC16C6x family specifically targets low-power, cost-sensitive embedded control where deterministic instruction execution (a single-cycle RISC core) and a rich peripheral set matter more than raw clock speed.
Key features of the PIC16C662 include its 14-bit instruction word, 8-level hardware stack, two 8-bit timers and one 16-bit timer/counter, a Watchdog Timer with its own on-chip RC oscillator, an analog comparator, a capture/compare/PWM (CCP) module, and a synchronous/asynchronous serial port (USART/SCI). The part also offers power-saving SLEEP mode, in-circuit serial programming (ICSP) capability, and programmable code protection.
Architecturally, the PIC16C662 uses a Harvard-class RISC core with separate program and data buses, which lets a 14-bit instruction fetch and an 8-bit data read occur in the same Tcy. This yields predictable 4 MHz performance at 4 MHz oscillator input on the -04 speed grade and predictable interrupt latency for real-time control loops.
Typical applications include white-goods and appliance control, low-end industrial automation, automotive body and interior modules, HVAC fan and damper control, and battery-powered instrumentation where the OTP memory and CMOS low-power design provide a favorable cost-per-function ratio. The wide 33-I/O count also makes it suitable for keyboard-scanning, LED-driving, and simple user-interface boards.
When designing with this device, note that OTP memory is one-time programmable and cannot be erased, so firmware must be fully validated before programming. Decoupling, ground-return integrity, and an external oscillator or resonator circuit (if accuracy beyond the internal RC is required) are the three most common layout items to review.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, with cross-references to PIC16C662 variants for engineers seeking pin-compatible alternatives.
直接替换替代料： PIC16C662T-04E/PT ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： PIC16C662T-04E/PT （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, RoHS Status, Program Memory Type, Maximum Clock Frequency.
快速对比工具——选择替代料号进行并排对比：
PIC16C662-04E/PT
✅ 直接替换✓ 有现货
$5.97 / 个
查看数据手册 →PIC16C662-20E/PT
✅ 直接替换✓ 有现货
$8.2 / 个
查看数据手册 →PIC16C662T-04I/PT
✅ 直接替换 ⚠️ 规格未核验✓ 有现货
$5.2 / 个
查看数据手册 →PIC16F747-I/PT
✅ 直接替换✓ 有现货
$4.4 / 个
查看数据手册 →PIC16C662T-04E/PT 最大额定值与电气特性
| Product Type | 8-bit RISC Microcontroller (MCU) |
| Core Architecture | PIC16 Harvard-class RISC |
| Program Memory Type | OTP (One-Time-Programmable) |
| Program Memory Size | 7 KB (4K x 14) |
| Instruction Word Width | 14 bits |
| RAM Size | 176 bytes |
| EEPROM Size | Not present |
| Number of I/O Pins | 33 |
| 最大时钟频率 | 4 MHz (speed grade -04) |
| Supply Voltage (Vcc) | 4 V to 6 V |
| ADC | Not present (digital-only MCU) |
| Timers | Two 8-bit + one 16-bit Timer/Counter |
| Serial Interface | USART/SCI (synchronous + asynchronous) |
| Capture/Compare/PWM (CCP) | Yes |
| Analog Comparator | Yes |
| Watchdog Timer | Yes, with dedicated on-chip RC oscillator |
| 封装 | 44-pin TQFP (PT), 10x10 mm |
| 安装类型 | Surface Mount |
| 工作温度范围 | -40C to +125C (Extended, -E suffix) |
| RoHS 状态 | Non-compliant (legacy OTP) |
| Lead-Free | unknown |
PIC16C662T-04E/PT 引脚配置
| 引脚 1 | OSC1/CLKIN — Oscillator input / external clock input |
| 引脚 2 | RA0/AN0 — Digital I/O / analog comparator input (no ADC on this part) |
| 引脚 3 | RA1/AN1 — Digital I/O / analog comparator input |
| 引脚 4 | RA2/AN2 — Digital I/O / analog comparator reference |
| 引脚 5 | RA3/AN3 — Digital I/O / analog comparator output |
| 引脚 6 | RA4/T0CKI — Digital I/O / Timer0 clock input |
| 引脚 7 | RA5/SS — Digital I/O / SPI slave select |
| 引脚 8 | Vss — Ground |
| 引脚 9 | OSC2/CLKOUT — Oscillator output / clock output |
| 引脚 10 | RC0/T1OSO/T1CKI — Digital I/O / Timer1 oscillator output or clock input |
| 引脚 11 | RC1/T1OSI/CCP2 — Digital I/O / Timer1 oscillator input / CCP2 |
| 引脚 12 | RC2/CCP1 — Digital I/O / CCP1 PWM output |
| 引脚 13 | RC3/SCK/SCL — Digital I/O / SPI clock / I2C clock |
| 引脚 14 | RC4/SDI/SDA — Digital I/O / SPI data in / I2C data |
| 引脚 15 | RC5/SDO — Digital I/O / SPI data out |
| 引脚 16 | RC6/TX/CK — Digital I/O / USART TX / clock |
| 引脚 17 | RC7/RX/DT — Digital I/O / USART RX / data |
| 引脚 18 | Vss — Ground |
| 引脚 19 | Vdd — Positive supply (4 V to 6 V) |
| 引脚 20 | RB0/INT — Digital I/O / external interrupt |
| 引脚 21 | RB1 — Digital I/O |
| 引脚 22 | RB2 — Digital I/O |
| 引脚 23 | RB3/PGM — Digital I/O / low-voltage programming |
| 引脚 24 | RB4 — Digital I/O / interrupt-on-change |
| 引脚 25 | RB5 — Digital I/O / interrupt-on-change |
| 引脚 26 | RB6/PGC — Digital I/O / ICSP clock |
| 引脚 27 | RB7/PGD — Digital I/O / ICSP data |
| 引脚 28 | Vdd — Positive supply (4 V to 6 V) |
| 引脚 29 | Vss — Ground |
| 引脚 30 | RD0 — Digital I/O |
| 引脚 31 | RD1 — Digital I/O |
| 引脚 32 | RD2 — Digital I/O |
| 引脚 33 | RD3 — Digital I/O |
| 引脚 34 | RD4 — Digital I/O |
| 引脚 35 | RD5 — Digital I/O |
| 引脚 36 | RD6 — Digital I/O |
| 引脚 37 | RD7 — Digital I/O |
| 引脚 38 | Vss — Ground |
| 引脚 39 | Vdd — Positive supply (4 V to 6 V) |
| 引脚 40 | RE0/RD — Digital I/O / parallel slave port read |
| 引脚 41 | RE1/WR — Digital I/O / parallel slave port write |
| 引脚 42 | RE2/CS — Digital I/O / parallel slave port chip select |
| 引脚 43 | Vss — Ground |
| 引脚 44 | MCLR/Vpp — Master clear (reset) / programming voltage |
典型应用
PIC16C662T-04E/PT 适用于 7 应用s: White Goods and Appliance Control, Automotive Body and Interior Modules, HVAC Fan and Damper Control, Battery-Powered Instrumentation, User Interface and Keypad Scanning, Industrial Sensor Interface Boards, Smart Home Edge Controllers.
White Goods and Appliance Control
The PIC16C662T-04E/PT's 33 I/O count, 7 KB OTP memory, and low CMOS operating current make it a cost-effective controller for washing-machine, dishwasher, microwave, and refrigerator boards. The 4 MHz instruction cycle gives 1 us deterministic loop times, which is sufficient for relay and triac sequencing, keypad scanning, and LED display multiplexing. Pin compatibility with the flash-based PIC16F747 family enables field firmware updates without changing PCB layout.
推荐
Automotive Body and Interior Modules
With the extended -40C to +125C temperature grade (-E suffix) and 33 digital I/O lines, the PIC16C662T-04E/PT fits body controllers, mirror adjusters, seat controllers, and interior lighting modules. The on-chip USART enables LIN-bus slave communication via an external LIN transceiver. Note that the part is not AEC-Q100 qualified - for new automotive designs migrate to AEC-Q100-qualified PIC16F equivalents or dsPIC33 family members.
推荐
HVAC Fan and Damper Control
The PIC16C662's two 8-bit timers plus one 16-bit timer support the multi-channel PWM needed for fan-speed control and damper actuator drive via the on-chip CCP module. Its 4 V to 6 V supply range matches 5 V HVAC board rails directly without an extra LDO. The 176 bytes of RAM are sufficient for proportional control loops, while the 7 KB OTP holds the full control law and look-up tables.
推荐
Battery-Powered Instrumentation
The PIC16C662's CMOS design, low quiescent current in SLEEP mode, and programmable Watchdog Timer with dedicated RC oscillator make it a viable controller for handheld meters, portable test gear, and remote sensor nodes. The 4 MHz oscillator at 4-6 V keeps active current low while the 14-bit instruction width provides good code density. Brown-out reset and power-on reset protect against battery brown-out events.
推荐
User Interface and Keypad Scanning
With 33 digital I/O, the PIC16C662T-04E/PT can scan 8x8 matrix keypads and drive multiplexed 7-segment or 14-segment LED displays directly through current-limiting resistors. The CCP module generates the display refresh timing without software overhead, freeing the CPU for application logic. The 7 KB OTP comfortably stores debounce algorithms, lookup tables, and command interpreters for menu-driven UIs.
推荐
Industrial Sensor Interface Boards
The PIC16C662's USART/SCI module supports RS-232 and RS-485 communication to host PLCs or SCADA nodes, while its 33 I/O lines interface to digital sensors, optocouplers, and 24 V industrial signal levels via external buffers. The extended temperature grade is essential for cabinet-mounted equipment. The on-chip analog comparator allows threshold detection without an external op-amp.
推荐
Smart Home Edge Controllers
Compact 44-pin TQFP form factor, low cost, and on-chip USART allow the PIC16C662T-04E/PT to serve as a node controller for smart-home subsystems such as lighting dimmers, blind motors, and door/window sensors. Its deterministic 1 us instruction cycle is well-suited to dimmer zero-cross detection and triac firing. For new designs prefer the flash-based PIC16F15344 or PIC16F180 family for modern peripherals and Core Independent Peripherals.
推荐
推荐产品汇总
工程参考数据： PIC16C662T-04E/PT ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | PIC16C662-04E/PT | PIC16C662-20E/PT | PIC16C662T-04I/PT | PIC16F747-I/PT |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-pin TQFP (PT) | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same | 44-pin TQFP (PT) - same |
| Program Memory Type | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | OTP (7 KB) | Flash (7 KB) |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 20 MHz | 4 MHz | 20 MHz |
| Temperature Grade | Extended (-40C to +125C) | Extended (-40C to +125C) | Extended (-40C to +125C) | Industrial (-40C to +85C) | Industrial (-40C to +85C) |
| Number of I/O | 33 | 33 | 33 | 33 | 36 |
| ADC | Not present | Not present | Not present | Not present | 8-channel 8-bit |
| RoHS Compliance | Non-compliant | Non-compliant | Non-compliant | Non-compliant | Compliant |
| Lifecycle Status | NRND | NRND | NRND | NRND | Active |
关键差异点
- Extended temperature range for industrial and automotive environments （对比 PIC16C662T-04I/PT (industrial -40C to +85C))
- Higher maximum clock speed option in same package （对比 PIC16C662-20E/PT)
- Reprogrammable flash alternative available for firmware updates （对比 PIC16F747-I/PT)
设计说明
Decouple every Vdd pin with a 100 nF ceramic capacitor placed within 5 mm of the package pin. According to the Microchip PIC16C662 datasheet, the device has three Vdd pins (19, 28, 39) and four Vss pins (8, 18, 29, 38) on the TQFP-44 package; each Vdd must have its own decoupling capacitor and the ground returns must form a low-inductance star or grid. Adding a bulk 10 uF tantalum or aluminum polymer cap near the IC supplies the transient current during peripheral switching.
Keep the OSC1/OSC2 traces short and surround them with a ground guard ring to minimize radiated EMI and stray pickup. For a 4 MHz crystal or resonator, route the traces as a differential pair of less than 10 mm length. Place C1 and C2 (typically 15-33 pF) from each oscillator pin to ground as close as possible to the IC. Per Microchip oscillator design notes, using an external parallel-resonant crystal with a series resistor (Rs 100-330 ohm) prevents overdriving the oscillator at low Vdd.
OTP memory is one-time programmable - firmware errors cannot be corrected after programming. Validate the HEX file against the full production test set in a flash-equivalent PIC16F662 or PIC16F747 socket before committing to the OTP die. Also note that the MCLR pin (pin 44) must never be left floating; tie it through a 10 kohm pull-up to Vdd, with the ICSP programmer diode-isolated, otherwise spurious resets will occur in noisy industrial environments.
The 44-pin TQFP (PT) package has a junction-to-ambient thermal resistance of approximately 50 C/W (still air) per the Microchip package outline. At the maximum 4 MHz clock and 6 V supply, the active current of about 5 mA creates only ~30 mW dissipation, so the junction temperature rise is negligible (<2 C). For high-IO-count designs driving many outputs continuously, calculate total dissipation from I/O sink current and ensure junction stays below 125 C for the extended temperature grade.
合规信息
PIC16C662 family is not RoHS compliant per Microchip legacy datasheet notes; uses lead-bearing terminations required by OTP process. Not AEC-Q100 qualified - automotive applications should migrate to PIC16F1939-I/PT or dsPIC33 family. No on-chip EEPROM.