PIC14000-04/SO - 8-Bit Mixed Signal MCU, 7KB OTP, 28-SOIC
料号： PIC14000-04/SO ✗ 停产| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $11.56 | $11.56 |
| 10 | $10.4 | $104.00 |
| 100 | $9.24 | $924.00 |
| 500 | $8.32 | $4,160.00 |
| 1,000 | $7.5 | $7,500.00 |
PIC14000-04/SO 概述
Background: An 8-bit mixed-signal microcontroller is a single-chip computer that combines a CPU, non-volatile program memory (here, One-Time Programmable EPROM), RAM, digital I/O, and on-chip analog peripherals such as ADCs, DACs, references, and current sources. The PIC14 family sits between PIC10/12 (smallest 8-bit MCUs) and PIC16/18 (general-purpose 8-bit) in Microchip's taxonomy, optimized specifically for closed-loop analog control and signal-acquisition applications rather than general-purpose logic.
Differentiating features include a 16-bit sigma-delta slope A/D converter, an on-chip bandgap voltage reference, an internal RC oscillator, a temperature sensor, a 4-bit programmable current source, a Low-Voltage Detector (LVD), a programmable voltage-reference generator, and a voltage-regulator control output. These blocks let a single PIC14000 replace a typical MCU plus several external analog ICs in a closed-loop sensor design.
The architecture uses a Harvard-style RISC core with separate program and data buses, allowing instruction fetch and operand access in one cycle. The mixed-signal analog engine is partitioned around a precision bandgap, and the device supports both 3.3 V and 5 V operation, making it flexible across battery-powered and industrial-rail designs.
Typical applications include SMPS secondary-side control, battery chargers, sensor conditioning, programmable current loops, and closed-loop fan/thermo control. The wide operating range and integrated analog blocks reduce external component count on tightly-constrained PCBs.
Design consideration: PIC14000 is marked Not Recommended for new designs by Microchip; for new designs the datasheet itself points to the PIC16F883 as the modern replacement with enhanced peripherals, more memory, and active lifecycle status.
This page consolidates distributor inventory, parametric position, and pin-compatible same-family alternatives for engineers maintaining legacy PIC14000-based designs.
直接替换替代料： PIC14000-04/SO ——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： PIC14000-04/SO （相同外形与封装尺寸） ——差异在于 Package, Core Architecture, Mounting Type, Program Memory Type, Instruction Execution Time.
快速对比工具——选择替代料号进行并排对比：
PIC14000-04I/SO
✅ 直接替换✓ 有现货
$8.3 / 个
查看数据手册 →PIC14000-04E/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC14000T-04/SO
✅ 直接替换✓ 有现货
$7.05 / 个
查看数据手册 →PIC14000T-04I/SO
✅ 直接替换✓ 有现货
$7.55 / 个
查看数据手册 →PIC14000T-04E/SO
✅ 直接替换📋 参考替代料（不在目录中）
PIC14000-04/SO 最大额定值与电气特性
| Core Architecture | PIC 8-bit RISC |
| Core Size | 8-bit |
| Instruction Set Width | 14-bit |
| Max CPU Frequency | 4 MHz |
| Instruction Cycle Time | 200 ns |
| Program Memory Type | OTP (One-Time Programmable EPROM) |
| Program Memory Size | 7 KB (4K x 14) |
| RAM Size | 192 bytes |
| Number of I/O Pins | 20 |
| A/D Converter | 16-bit sigma-delta slope converter |
| Analog Features | Bandgap reference, temperature sensor, 4-bit programmable current source, LVD, voltage-regulator control output, programmable reference generator |
| Oscillator Type | Internal RC |
| 电源电压 | 3.3 V / 5 V |
| 封装 | 28-SOIC (0.295 inch / 7.50 mm width) |
| 安装类型 | Surface Mount |
| 引脚数 | 28 |
PIC14000-04/SO 引脚配置
| 引脚 1 | [DATA_NEEDED: pin 1 function] — Per PIC14000 datasheet (40122b) - pin assignment varies by product identification system option |
| 引脚 2 | [DATA_NEEDED: pin 2 function] — Per PIC14000 datasheet (40122b) |
| 引脚 3 | [DATA_NEEDED: pin 3 function] — Per PIC14000 datasheet (40122b) |
| 引脚 4 | [DATA_NEEDED: pin 4 function] — Per PIC14000 datasheet (40122b) |
| 引脚 5 | [DATA_NEEDED: pin 5 function] — Per PIC14000 datasheet (40122b) |
| 引脚 6 | [DATA_NEEDED: pin 6 function] — Per PIC14000 datasheet (40122b) |
| 引脚 7 | [DATA_NEEDED: pin 7 function] — Per PIC14000 datasheet (40122b) |
| 引脚 8 | [DATA_NEEDED: pin 8 function] — Per PIC14000 datasheet (40122b) |
| 引脚 9 | [DATA_NEEDED: pin 9 function] — Per PIC14000 datasheet (40122b) |
| 引脚 10 | [DATA_NEEDED: pin 10 function] — Per PIC14000 datasheet (40122b) |
| 引脚 11 | [DATA_NEEDED: pin 11 function] — Per PIC14000 datasheet (40122b) |
| 引脚 12 | [DATA_NEEDED: pin 12 function] — Per PIC14000 datasheet (40122b) |
| 引脚 13 | [DATA_NEEDED: pin 13 function] — Per PIC14000 datasheet (40122b) |
| 引脚 14 | [DATA_NEEDED: pin 14 function] — Per PIC14000 datasheet (40122b) |
| 引脚 15 | [DATA_NEEDED: pin 15 function] — Per PIC14000 datasheet (40122b) |
| 引脚 16 | [DATA_NEEDED: pin 16 function] — Per PIC14000 datasheet (40122b) |
| 引脚 17 | [DATA_NEEDED: pin 17 function] — Per PIC14000 datasheet (40122b) |
| 引脚 18 | [DATA_NEEDED: pin 18 function] — Per PIC14000 datasheet (40122b) |
| 引脚 19 | [DATA_NEEDED: pin 19 function] — Per PIC14000 datasheet (40122b) |
| 引脚 20 | [DATA_NEEDED: pin 20 function] — Per PIC14000 datasheet (40122b) |
| 引脚 21 | [DATA_NEEDED: pin 21 function] — Per PIC14000 datasheet (40122b) |
| 引脚 22 | [DATA_NEEDED: pin 22 function] — Per PIC14000 datasheet (40122b) |
| 引脚 23 | [DATA_NEEDED: pin 23 function] — Per PIC14000 datasheet (40122b) |
| 引脚 24 | [DATA_NEEDED: pin 24 function] — Per PIC14000 datasheet (40122b) |
| 引脚 25 | [DATA_NEEDED: pin 25 function] — Per PIC14000 datasheet (40122b) |
| 引脚 26 | [DATA_NEEDED: pin 26 function] — Per PIC14000 datasheet (40122b) |
| 引脚 27 | [DATA_NEEDED: pin 27 function] — Per PIC14000 datasheet (40122b) |
| 引脚 28 | [DATA_NEEDED: pin 28 function] — Per PIC14000 datasheet (40122b) |
典型应用
PIC14000-04/SO 适用于 6 应用s: SMPS Secondary-Side Control, Battery Charger Control, Sensor Signal Conditioning, Programmable Current Loop / 4-20 mA Transmitter, Closed-Loop Fan / Thermo Control, Precision Voltage / Current Reference Module.
SMPS Secondary-Side Control
The PIC14000-04/SO is well-suited to SMPS secondary-side control because its integrated voltage-regulator control output, programmable reference generator, and 16-bit sigma-delta A/D allow direct feedback-loop implementation without external analog ICs. The 4 MHz RISC core provides deterministic 200 ns instruction timing that simplifies synchronous rectification and timing-critical control loops. The 4-bit programmable current source supports secondary-side current sensing, while the LVD enables input undervoltage protection. Operating from 3.3 V or 5 V, the device fits both battery-fed and industrial-rail isolated DC-DC converters, reducing BOM cost.
推荐
Battery Charger Control
PIC14000-04/SO integrates the analog blocks needed for closed-loop charger control: the sigma-delta A/D for V/I sensing, the programmable current source for constant-current regulation, the bandgap reference for accuracy, and the temperature sensor for battery pack thermal protection. The 7 KB OTP holds charge profile state machines for Li-ion, NiMH, or lead-acid chemistries, while 192 bytes of RAM accommodates sense-and-control variables. The 20 I/O pins drive status LEDs, FET gate drivers, and communication to a host MCU. Wide 3.3 V / 5 V supply tolerance allows direct connection to single-cell or multi-cell battery stacks.
推荐
Sensor Signal Conditioning
The PIC14000-04/SO's mixed-signal engine replaces a typical MCU + external op-amp + ADC + reference stack for sensor conditioning. The on-chip bandgap provides a stable voltage reference, the 16-bit sigma-delta A/D delivers high-resolution conversion of bridge, thermocouple, or RTD signals, and the 4-bit programmable current source can excite resistive sensors directly. The internal temperature sensor enables cold-junction compensation or system health monitoring without extra components. With 20 I/O, the device can multiplex multiple sensor channels, drive isolation barriers, and report over UART or I2C to a host controller.
推荐
Programmable Current Loop / 4-20 mA Transmitter
PIC14000-04/SO is a strong fit for 4-20 mA current-loop transmitters in industrial process control. The sigma-delta A/D digitizes sensor inputs with high resolution, while the 4-bit programmable current source is the building block for the loop output driver (typically combined with an external pass transistor). The internal bandgap and LVD ensure accurate regulation and undervoltage lockout across the loop supply. The 4 MHz core handles linearization curves (RTD, thermocouple) in software without taxing the 192-byte RAM budget. Industrial temperature variants are available as drop-in upgrades.
推荐
Closed-Loop Fan / Thermo Control
PIC14000-04/SO implements a complete closed-loop fan or thermo controller by combining its on-chip temperature sensor for feedback, the sigma-delta A/D for setpoint reference, and the programmable current source or PWM output for fan drive (with external FET). The voltage-regulator control output simplifies supply rail generation inside the controller module. With 20 I/O, the device reads tachometer pulses, drives status LEDs, and accepts keypad or I2C setpoint inputs. Operating from 3.3 V or 5 V allows direct use in 5 V standby rails common in server and networking equipment.
推荐
Precision Voltage / Current Reference Module
The PIC14000-04/SO can be configured as a programmable precision reference module by leveraging its bandgap, programmable reference generator, and 4-bit current source. A host processor commands the desired output via I2C or UART, and the PIC14000-04/SO drives an external DAC or trimming network. The LVD protects against misconfiguration, and the internal temperature sensor enables software compensation. With 7 KB OTP storing calibration tables and 192 bytes of RAM for runtime variables, this is a compact, low-power alternative to dedicated reference ICs in instrumentation designs.
推荐
推荐产品汇总
工程参考数据： PIC14000-04/SO ——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 | PIC14000-04I/SO | PIC14000-04E/SO | PIC14000T-04/SO | PIC14000T-04I/SO |
|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 28-SOIC (0.295 inch / 7.50 mm) | 28-SOIC (0.295 inch / 7.50 mm) - same | 28-SOIC (0.295 inch / 7.50 mm) - same | 28-SOIC (0.295 inch / 7.50 mm) - same | 28-SOIC (0.295 inch / 7.50 mm) - same |
| Core / Architecture | 8-bit PIC14 RISC | 8-bit PIC14 RISC - same | 8-bit PIC14 RISC - same | 8-bit PIC14 RISC - same | 8-bit PIC14 RISC - same |
| Max CPU Frequency | 4 MHz | 4 MHz - same | 4 MHz - same | 4 MHz - same | 4 MHz - same |
| Program Memory Type | OTP (7 KB / 4K x 14) | OTP (7 KB / 4K x 14) - same | OTP (7 KB / 4K x 14) - same | OTP (7 KB / 4K x 14) - same | OTP (7 KB / 4K x 14) - same |
| RAM Size | 192 bytes | 192 bytes - same | 192 bytes - same | 192 bytes - same | 192 bytes - same |
| Number of I/O | 20 | 20 - same | 20 - same | 20 - same | 20 - same |
| Temperature Grade | Commercial (0C to +70C) | Industrial (-40C to +85C) | Automotive/Extended (-40C to +125C) | Commercial (0C to +70C), Tape & Reel | Industrial (-40C to +85C), Tape & Reel |
| Packaging Format | Tube | Tube | Tube | Tape & Reel | Tape & Reel |
| Lifecycle Status | NRND | NRND | NRND | NRND | NRND |
关键差异点
- Integrated mixed-signal analog engine （对比 PIC14000-04I/SO)
- Wide 3.3 V / 5 V supply range （对比 PIC14000T-04E/SO)
- Compact 35-instruction RISC core （对比 PIC16F883)
设计说明
PIC14000-04/SO is marked Not Recommended for new designs by Microchip. For new product development, the PIC14000 datasheet itself recommends migrating to PIC16F883, which is in active production and offers Flash memory, more RAM, and enhanced peripherals. Use PIC14000-04/SO only for maintenance of existing legacy designs where PCB and firmware reuse is mandatory.
The PIC14000-04/SO commercial temperature grade supports 0C to +70C; for designs that must operate over -40C to +85C or -40C to +125C, select the drop-in industrial (PIC14000-04I/SO) or extended/automotive (PIC14000-04E/SO) variant. Confirm the exact temperature range in the PIC14000 datasheet (40122b) because specific sub-options (04, 04I, 04E) carry different grades per the PIC14000 product identification system.
PIC14000-04/SO integrates sensitive analog blocks (sigma-delta A/D, bandgap, current source) on the same die as the digital core. Follow the PIC14000 datasheet (40122b) layout guidance: keep the analog supply pins well bypassed with both bulk and 100 nF ceramic capacitors placed close to the pins, separate analog and digital grounds with a single-point connection, and route analog traces away from high-frequency digital lines to avoid coupling noise into the 16-bit A/D conversions.
合规信息
RoHS, lead-free, and halogen-free status were not provided in the verified web data and have been marked unknown per data authenticity rules. PIC14000-04/SO is commercial grade, not AEC-Q100; the /E automotive variant may be AEC-Q100 qualified, but this was not confirmed in the provided data. Engineers should request the latest material declaration from Microchip before placing production orders.