应用领域：智能家电

方案类型：成品

主控芯片：STM;

方案概述

1.产品功能描述

双重密码结构，快递码+主人码，快递码是随机一次性密码，主人码是可设置的固定密码。快递员和箱子主人用电话交换密码，即可验证快递信息，又安全可靠。

2.产品应用范围

快递箱，快递柜，钥匙箱

3.产品特点优势总结

安全性高，操作简单，不需联网，也不需后台服务器，无运营成本!

4.产品参数详情：

键盘+延长线+电控锁

STM32F072主要产品

STM32F072C8T6、STM32F072C8U6、STM32F072CBT6、STM32F072CBU6、STM32F072CBY6、STM32F072R8T6、STM32F072RBH6、STM32F072RBT6、STM32F072V8H6、STM32F072V8T6、STM32F072VBH6、STM32F072VBT6

STM32F072C8T6

The STM32F072x8/xB microcontrollers incorporate the high-performance ARM®Cortex®-M0 32-bit RISC core operating at up to 48 MHz frequency, high-speed embedded memories (up to 128 Kbytes of Flash memory and 16 Kbytes of SRAM), and an extensive range of enhanced peripherals and I/Os. All devices offer standard communication interfaces (two I2Cs, two SPI/I2S, one HDMI CEC and four USARTs), one USB Full-speed device (crystal-less), one CAN, one 12-bit ADC, one 12-bit DAC with two channels, seven 16-bit timers, one 32-bit timer and an advanced-control PWM timer.

The STM32F072x8/xB microcontrollers operate in the -40 to +85 °C and -40 to +105 °C temperature ranges, from a 2.0 to 3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-power applications.

The STM32F072x8/xB microcontrollers include devices in seven different packages ranging from 48 pins to 100 pins with a die form also available upon request. Depending on the device chosen, different sets of peripherals are included.

These features make the STM32F072x8/xB microcontrollers suitable for a wide range of applications such as application control and user interfaces, hand-held equipment, A/V receivers and digital TV, PC peripherals, gaming and GPS platforms, industrial applications, PLCs, inverters, printers, scanners, alarm systems, video intercoms and HVACs.

Key Features

Core: ARM® 32-bit Cortex® -M0 CPU, frequency up to 48 MHz

Memories

64 to 128 Kbytes of Flash memory

16 Kbytes of SRAM with HW parity

CRC calculation unit

Reset and power management

Digital and I/O supply: VDD = 2.0 V to 3.6 V

Analog supply: VDDA = VDD to 3.6 V

Selected I/Os: VDDIO2 = 1.65 V to 3.6 V

Power-on/Power down reset (POR/PDR)

Programmable voltage detector (PVD)

Low power modes: Sleep, Stop, Standby

VBAT supply for RTC and backup registers

Clock management

4 to 32 MHz crystal oscillator

32 kHz oscillator for RTC with calibration

Internal 8 MHz RC with x6 PLL option

Internal 40 kHz RC oscillator

Internal 48 MHz oscillator with automatic trimming based on ext. synchronization

Up to 87 fast I/Os

All mappable on external interrupt vectors

Up to 68 I/Os with 5V tolerant capability and 19 with independent supply VDDIO2

Seven-channel DMA controller

One 12-bit, 1.0 μs ADC (up to 16 channels)

Conversion range: 0 to 3.6 V

Separate analog supply: 2.4 V to 3.6 V

One 12-bit D/A converter (with 2 channels)

Two fast low-power analog comparators with programmable input and output

Up to 24 capacitive sensing channels for touchkey, linear and rotary touch sensors

Calendar RTC with alarm and periodic wakeup from Stop/Standby

12 timers

One 16-bit advanced-control timer for six-channel PWM output

One 32-bit and seven 16-bit timers, with up to four IC/OC, OCN, usable for IR control decoding or DAC control

Independent and system watchdog timers

SysTick timer

Communication interfaces

Two I2 C interfaces supporting Fast Mode Plus (1 Mbit/s) with 20 mA current sink, one supporting SMBus/PMBus and wakeup

Four USARTs supporting master synchronous SPI and modem control, two with ISO7816 interface, LIN, IrDA, auto baud rate detection and wakeup feature

Two SPIs (18 Mbit/s) with 4 to 16 programmable bit frames, and with I2 S interface multiplexed

CAN interface

USB 2.0 full-speed interface, able to run from internal 48 MHz oscillator and with BCD and LPM support

HDMI CEC wakeup on header reception

Serial wire debug (SWD)

96-bit unique ID

All packages ECOPACK® 2

产品参数