CY8C3444LTI-119 - 50MHz 8051 PSoC 3 MCU 48-QFN | Cypress
料号： CY8C3444LTI-119 ✓ 量产中CY8C3444LTI-119 概述
A PSoC (Programmable System-on-Chip) is a mixed-signal microcontroller architecture that integrates a CPU core, programmable analog and digital peripheral blocks, memory and dedicated DMA routing on a single die. In the signal chain of an embedded system, a PSoC sits above a plain microcontroller and below a full system-on-chip: instead of adding a separate ADC, op-amp, timer or routing fabric in external silicon, the designer configures on-chip analog blocks and digital blocks through firmware registers. That is why PSoC 3 devices are described as a true programmable embedded system-on-chip.
Key features of this device include 50 MHz DC operation of the 8051 core, 16 KB (16K x 8) flash with four levels of flash protection, 2 KB of SRAM, 512 bytes of data EEPROM and 8 KB of ECC flash. On-chip resources include a 12-bit ADC, two datapointers, an interrupt controller with 27 sources and 8 priority levels, and one Peripheral Hub Unit (PHUB) with eight parallel access ports for deterministic peripheral-to-peripheral transfers without CPU intervention.
The architecture pairs the 8051 instruction set with a dedicated DMA controller, which lets ADC conversions, timer captures and serial transfers run autonomously while the CPU handles control logic. The PHUB routing fabric connects peripherals through a crossbar-style interconnect, so designers can re-map signals in firmware instead of fixing them in silicon. This is the core reason PSoC 3 parts deliver configurable analog and digital functions with lower external component counts than discrete 8051 designs.
Typical applications include industrial control and sensor-conditioning panels, human-machine interface boards with capacitive touch buttons, low-power battery-operated sensor nodes, building and HVAC control modules, small motor and actuator controllers, and compact consumer accessories such as lighting controllers and handheld instruments.
When designing around this part, treat the exposed pad as a thermal and electrical connection to ground, and keep the 1.71 V to 5.5 V rail within tolerance across temperature. The 8051 core is 8-bit, so choose arithmetic types carefully, and confirm that the analog blocks and routing you need are present in this specific CY8C34 device rather than in a larger family member.
This page brings together the manufacturer part parameters, the CY8C3 family ordering information, drop-in alternatives within the same 48-VFQFN footprint, and practical design notes that go beyond the ordering table.
直接替换替代料： CY8C3444LTI-119 ——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： CY8C3444LTI-119 （相同外形与封装尺寸） ——差异在于 Maximum CPU Frequency, Package.
CY8C3444LTI-119T
✅ 直接替换📋 参考替代料（不在目录中）
CY8C3444LTI-109
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3444LTI-110
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →CY8C3444LTI-120
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3447LTI-120
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3442LTI-120
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
CY8C3444LTI-119 最大额定值与电气特性
| CPU Core | 8051 single core, 8-bit |
| Maximum CPU Frequency | 50 MHz (DC operation) |
| Program Memory (Flash) | 16 KB (16K x 8) |
| SRAM | 2 KB |
| Data EEPROM | 512 bytes |
| ECC Flash | 8 KB |
| Flash Protection Levels | 4 |
| ADC Resolution | 12-bit |
| Supply Voltage Range | 1.71 V to 5.5 V |
| 封装 | 48-VFQFN (7 x 7 mm) with exposed pad |
| 安装类型 | Surface Mount |
| Datapointers | 2 |
| Interrupt Sources | 27 |
| Interrupt Priority Levels | 8 |
| Peripheral Hub Unit (PHUB) | 1 PHUB with 8 parallel access ports |
| DMA Controller | Yes, dedicated DMA alongside the 8051 core |
| Programmable Peripherals | Configurable digital and analog blocks with flexible routing |
CY8C3444LTI-119 48-vfqfn (7 x 7 mm) with exposed pad 引脚配置指南
CY8C3444LTI-119（48-vfqfn (7 x 7 mm) with exposed pad 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： CY8C3444LTI-119.
请参阅 数据手册 以查看完整引脚配置。
典型应用
CY8C3444LTI-119 适用于 6 应用s: Industrial Control and Sensor Conditioning, Capacitive Touch Human-Machine Interfaces, Low-Power IoT and Battery Sensor Nodes, HVAC, Building Automation and Energy Metering, Small Motor and Actuator Control, Consumer Lighting and Appliance Control.
Industrial Control and Sensor Conditioning
The CY8C3444LTI-119 fits machine control boards that must read multiple analog inputs and react quickly. Its 8051 core runs up to 50 MHz while the dedicated DMA controller moves ADC results and timer captures without CPU intervention, and the PHUB with 8 parallel access ports gives deterministic peripheral-to-peripheral routing. With 16 KB of flash for control code, 2 KB of SRAM for working buffers, and a 12-bit ADC, a single device can replace a discrete 8051 plus a separate ADC and routing logic. The 1.71 V to 5.5 V operating range supports both 3.3 V and 5 V factory equipment rails.
推荐
Capacitive Touch Human-Machine Interfaces
The programmable analog architecture of the CY8C3444LTI-119 makes it a natural fit for capacitive touch keypads and control panels. Touch front ends, amplifiers and filters are configured from the on-chip analog blocks rather than external passive networks, while the 12-bit ADC and DMA controller handle scanning and filtering off the CPU critical path, leaving the 8051 core to drive indicators and communications. Because the parts sit in a 48-VFQFN (7 x 7 mm) package with an exposed pad, touch-capacitive boards can be built compactly, and the wide 1.71 V to 5.5 V supply range supports both 1.8 V and 3.3 V product variants.
推荐
Low-Power IoT and Battery Sensor Nodes
The CY8C3444LTI-119 suits compact, battery-operated sensing nodes because the PSoC 3 family is designed for ultra-low-power operation across an unusually wide voltage range of 1.71 V to 5.5 V. A node that sleeps between measurements can wake, take analog readings through the 12-bit ADC, and push data out with the DMA-assisted serial peripherals, all from a 16 KB flash / 2 KB SRAM budget that suits low-cost silicon. The 48-VFQFN footprint keeps board area low for wearable and IoT form factors, and the PHUB interconnect lets designers share timers and counters between the radio, sensor and power-management logic.
推荐
HVAC, Building Automation and Energy Metering
Building and HVAC control boards are typically cost-sensitive, space-limited and permanently powered, which matches the strengths of the CY8C3444LTI-119. Its configurable analog blocks can be tuned into signal-conditioning chains for temperature, humidity and current inputs without external amplifiers, while the 8051 core at up to 50 MHz handles the control loop and the 12-bit ADC captures metering waveforms. Flash protection levels help isolate bootloader code from calibration data, and the 8 KB of ECC flash provides a safe place for stored calibration constants in revenue-grade metering designs.
推荐
Small Motor and Actuator Control
Compact motor and actuator controllers benefit from the timing and routing resources of the CY8C3444LTI-119. Multiple 16-bit timers with datapointers and DMA-driven capture make it practical to decode encoder pulses or position sensors without jitter, while the programmable digital blocks generate the required PWM and step sequences. The device runs from a 1.71 V to 5.5 V logic rail, so it can be paired with a 5 V gate-driver stage while the MCU itself operates from a regulated 3.3 V rail, and the 48-VFQFN package with an exposed pad dissipates core heat into the board plane.
推荐
Consumer Lighting and Appliance Control
Lighting controllers and small appliances need a microcontroller that is inexpensive, widely available and easy to qualify. The CY8C3444LTI-119 delivers an 8051 core at up to 50 MHz with 16 KB of flash in a compact 48-VFQFN package, which leaves board area for driver stages and heat sinks, and its programmable digital blocks can implement dimming sequences and fault handling in firmware rather than in external logic. The wide 1.71 V to 5.5 V operating range suits both mains-derived regulated 5 V rails and 3.3 V appliance boards, and the four flash protection levels let the manufacturer lock the safety-critical dimming code after end-of-line test.
推荐
推荐产品汇总
工程参考数据： CY8C3444LTI-119 ——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 | CY8C3444LTI-119T | CY8C3444LTI-109 | CY8C3444LTI-110 | CY8C3444LTI-120 | CY8C3447LTI-120 |
|---|---|---|---|---|---|---|
| Package | 48-VFQFN (7 x 7 mm) | 48-VFQFN (7 x 7 mm) - same | 48-VFQFN (7 x 7 mm) - same | 48-VFQFN (7 x 7 mm) - same | 48-VFQFN (7 x 7 mm) - same | 48-VFQFN (7 x 7 mm) - same |
| Brand | Cypress Semiconductor | Infineon Technologies | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor | Cypress Semiconductor |
| CPU Core | 8051, single core, 8-bit | 8051, single core, 8-bit | 8051, single core, 8-bit | 8051, single core, 8-bit | 8051, single core, 8-bit | 8051, single core, 8-bit |
关键差异点
- Programmable analog and digital blocks in one 8051-class device （对比 Discrete 8051 MCUs such as C8051F330R)
- Dedicated DMA and PHUB interconnect （对比 Discrete 8051 MCUs such as C8051F320R)
- Wide 1.71 V to 5.5 V operating range （对比 Discrete 8051 MCUs such as C8051F303R)
- Closest same-footprint alternative shares the full resource set （对比 CY8C3444LTI-119T)
设计说明
The 48-VFQFN (7 x 7 mm) package exposes a ground pad that must be soldered to a ground plane with a thermal-via array; reserve the pad area and via fence in the land pattern and keep it free of other routing. Because the part is 0.5 mm pitch, confirm the board house supports fine-pitch QFN assembly and verify paste stencil aperture ratios for the exposed pad, otherwise thermal performance and yield both suffer. Decoupling should follow the manufacturer recommended capacitors placed directly on the supply pins.
The device operates from 1.71 V to 5.5 V, so a single regulator can cover 1.8 V, 2.5 V, 3.3 V or 5 V systems, but analog block accuracy and internal timing change with rail voltage. For mixed 3.3 V I/O and 1.8 V core designs, budget the brownout and ramp behaviour of the supply, and place bulk plus high-frequency decoupling close to the supply pins. If the board runs from a noisy 5 V rail, verify the PSRR figures for the specific operating mode listed in the CY8C34 family data sheet before trusting sensor readings.
The PSoC 3 peripherals are configurable rather than fixed, so a design that assumes a classic 8051 peripheral map will fail. Build the firmware against the exact device configuration in PSoC Creator, and review the generated configuration headers for every clock, routing and analog block assignment before sign-off. Also note the 8-bit datapath: use 16-bit accumulators in RAM for arithmetic-heavy loops, and remember that only 16 KB of flash and 2 KB of SRAM are available on the -119 variant.
Route analog inputs away from switching nodes and keep the exposed ground pad acting as the return path for high-gain analog blocks. The PHUB allows peripherals to be re-routed in firmware, which makes it tempting to treat signal paths as non-critical, but physical loop area still determines noise coupling. Keep the 12-bit ADC front-end traces short, reference ground and analog ground tied at a single point near the exposed pad, and follow the recommended analog layout guidance in the family data sheet.
合规信息
No explicit compliance declarations are published for this orderable variant on the manufacturer part page; confirm RoHS, REACH and lead-free status against the current manufacturer declaration for the exact part number before release.
