PIC16F1934-I/P - 8-Bit 32MHz XLP Microcontroller | Microchip
料号： PIC16F1934-I/P ✓ 量产中PIC16F1934-I/P 概述
A microcontroller is a programmable integrated circuit containing a processor core, program memory, data memory, peripherals, and input/output ports. The PIC16F1934-I/P belongs to the hierarchy of 8-bit MCU > PIC microcontroller > PIC16 family > XLP low-power microcontroller. This positioning makes it suitable for compact control systems that must combine readable firmware execution, dedicated display handling, and low quiescent current without the complexity and cost of a higher-bit-width processor.
The device provides 7 KB of flash memory for firmware, 256 bytes of RAM, and 256 bytes of EEPROM according to its distributor product listing. Its maximum operating frequency is 32 MHz, while its listed operating voltage range is 1.8 V to 5.5 V. The flash-based architecture supports in-circuit programming and allows firmware to be updated in deployed equipment. An integrated LCD driver and up to 35 I/O lines provide useful interface capacity for measurement, display, and control functions.
The PIC16F1934-I/P is a CMOS device from Microchip's XLP portfolio. XLP technology emphasizes low current consumption during active operation and sleep, making it useful for battery-operated instruments, panel controls, and metering equipment. The part's -40 °C to +125 °C industrial temperature capability supports operation across industrial environments, while its 40-pin PDIP package facilitates prototyping, inspection, and through-hole assembly.
Typical uses include standalone LCD instruments, industrial control panels, energy meters, environmental monitors, and compact automation controllers. In an LCD meter, the MCU can acquire sensor data through its ADC, perform calculations, update the integrated LCD driver, and manage switches or alarm outputs. In a battery-powered monitor, XLP operating modes can reduce consumption during inactive periods while preserving fast execution when measurements are required.
Designers should allocate decoupling close to the supply pins, route sensitive analog inputs away from switching and high-current traces, and confirm oscillator, reset, programming, and LCD segment connections against the manufacturer's pin-description table. Because the DIP package has generous spacing, prototype boards are straightforward, but production designs should account for its larger footprint compared with surface-mount packages.
This page combines the manufacturer's device information with distributor specifications, application guidance, package considerations, and engineering-focused selection notes. It also distinguishes verified operating characteristics from parameters that require confirmation in the manufacturer datasheet, helping engineers plan firmware, PCB layout, and sourcing without relying on generic microcontroller assumptions.
直接替换替代料： PIC16F1934-I/P ——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： PIC16F1934-I/P （相同外形与封装尺寸） ——差异在于 Architecture, LCD Driver, Package.
该产品暂无直接替换替代料。
请求替代料PIC16F1934-I/P 最大额定值与电气特性
| Device Type | 8-bit CMOS flash-based microcontroller |
| Architecture | PIC16 RISC |
| 最大时钟频率 | 32 MHz |
| Program Memory | 7 KB flash |
| Program Memory Organization | 4K x 14 words |
| Data RAM | 256 bytes |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Lines | 35 lines |
| LCD Driver | Integrated |
| Low-Power Technology | nanoWatt XLP |
| 封装 | 40-pin PDIP |
| 安装类型 | Through-hole |
| 工作温度范围 | -40 °C to +125 °C |
| Programmable Memory Type | Flash |
PIC16F1934-I/P 40-pin pdip 引脚配置指南
PIC16F1934-I/P（40-pin pdip 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： PIC16F1934-I/P.
请参阅 数据手册 以查看完整引脚配置。
典型应用
PIC16F1934-I/P 适用于 6 应用s: LCD Energy Meter, Industrial Control Panel, Battery-Powered Environmental Monitor, Standalone Data Logger, Appliance User Interface, Compact Automation Controller.
LCD Energy Meter
The PIC16F1934-I/P fits an LCD energy meter because its integrated LCD driver reduces the number of external display-interface components, while 7 KB of flash accommodates measurement, calibration, and display firmware. Its 35 I/O lines can support pulse-input sensing, voltage references, pushbuttons, and alarm outputs. The 256-byte EEPROM provides a practical location for calibration constants and accumulated counters, and the 1.8 V to 5.5 V range supports both low-energy and 5 V meter platforms. The 40-pin PDIP package also makes the device convenient for metrology prototypes and serviceable industrial instruments.
推荐
Industrial Control Panel
A compact industrial control panel can use the PIC16F1934-I/P for button scanning, status indication, relay logic, and supervisory control. Its 8-bit RISC architecture and 32 MHz maximum clock provide ample responsiveness for ordinary panel tasks, while 35 I/O lines expand connection options. The integrated LCD driver is useful for local menus, status pages, and diagnostic values without an external display controller. Because the PDIP package is through-hole, it is particularly convenient for machinery builders who favor easy inspection, socketed prototypes, and straightforward rework.
推荐
Battery-Powered Environmental Monitor
The PIC16F1934-I/P is suitable for a battery-powered environmental monitor because it belongs to Microchip's nanoWatt XLP family and operates down to 1.8 V. The MCU can sample a sensor, apply calibration and filtering, drive an LCD, and remain in a low-power state between readings. Its 256 bytes of RAM and 256 bytes of EEPROM are sufficient for compact measurement records and retained calibration data, although firmware size must remain within 7 KB. Final battery-life calculations should use the manufacturer's current specifications for the exact clock and sleep configuration.
推荐
Standalone Data Logger
The PIC16F1934-I/P can act as the control core of a compact standalone data logger when the application requires periodic sensor acquisition, local display, and stored configuration rather than network connectivity. Its flash-based architecture supports firmware revision and update workflows, while EEPROM can retain calibration coefficients or logging parameters between power cycles. The available 7 KB program memory and 256-byte RAM are the principal constraints, so the designer should keep buffering compact and avoid resource-heavy middleware. The -40 °C to +125 °C grade is useful when the logger operates near industrial machinery.
推荐
Appliance User Interface
The PIC16F1934-I/P can implement the user interface for a compact appliance, instrument, or embedded controller where an LCD provides menus and status information. Its integrated LCD driver reduces the burden on the general-purpose I/O pins, leaving more capacity for sensors, switches, and actuators. At 32 MHz, the processor can service display updates alongside timekeeping and control tasks, while XLP features help reduce energy use in standby states. Designers should budget flash carefully and use the manufacturer pin table to ensure that display segments do not conflict with other assigned functions.
推荐
Compact Automation Controller
For compact automation equipment, the PIC16F1934-I/P can coordinate discrete inputs, relay or logic-level outputs, timing functions, and a local diagnostic display. Its 35 I/O lines offer substantial connectivity in a single package, and the 32 MHz clock supports responsive debouncing, event handling, and control-loop execution. The 7 KB flash capacity is adequate for straightforward supervisory logic but not for large protocol stacks or elaborate data acquisition. For motor drives, high-current switching, or safety-critical outputs, use appropriate external drivers and isolation rather than routing hazardous loads directly through MCU pins.
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推荐产品汇总
工程参考数据： PIC16F1934-I/P ——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 |
|---|---|
| Package | 40-pin PDIP |
| Brand | Microchip Technology |
| CPU Architecture | 8-bit PIC16 RISC |
| Maximum Clock Frequency | 32 MHz |
| Flash Program Memory | 7 KB (4K x 14 words) |
| Data RAM | 256 bytes |
| EEPROM | 256 bytes |
| Operating Voltage Range | 1.8 V to 5.5 V |
| I/O Lines | 35 lines |
| Display Support | Integrated LCD driver |
| Low-Power Feature | nanoWatt XLP |
关键差异点
- Integrated LCD capability reduces display-interface overhead （对比 A larger general-purpose 8-bit MCU without an integrated LCD driver)
- XLP architecture targets low-power embedded operation （对比 A conventional non-low-power 8-bit microcontroller)
- Through-hole package simplifies inspection and prototype rework （对比 A comparable surface-mount microcontroller)
设计说明
Plan the supply network for the full 1.8 V to 5.5 V operating range, including the current consumed by the MCU, LCD, and attached sensors. Place a local supply bypass capacitor close to the device's power pins and provide a stable return path for return currents. If the LCD has significant load transients, separate its supply filtering from sensitive analog circuitry. Validate brownout, startup, and sleep-current behavior in the complete design because firmware state and active peripherals can change the measured demand.
Use the 40-pin PDIP footprint from the manufacturer package drawing and route programming, reset, oscillator, LCD, and I/O assignments directly from the device pin-description table. Keep traces from sensitive analog inputs away from LCD segment outputs and other switching nodes. The through-hole package is easy to prototype, but its long leads can increase parasitic coupling; maintain short return paths and adequate clearance from high-voltage or high-current sections of the board.
Confirm that the complete ordering code specifies the required 40-pin PDIP package and industrial temperature grade. Do not substitute a surface-mount or different pin-count variant without redesigning the footprint, and do not assume that a family member with similar memory is software- and peripheral-compatible. Check LCD segment assignments against other I/O functions before finalizing the PCB, and include programming access if field updates are required.
For compact industrial equipment, estimate junction temperature from the device dissipation, ambient temperature, and the selected board construction. Estimated: use the measured MCU supply current, the difference between supply and internal rail voltages, and the resulting package dissipation when assessing the thermal margin. Verify the result against the manufacturer operating-temperature and electrical limits; provide ventilation or copper area if the enclosure traps heat.
合规信息
The manufacturer product page and distributor listings identify the device and its package but do not state compliance status. Automotive qualification is not indicated for this industrial-temperature ordering code.
