CN219246065U

CN219246065U - Off-line burner

Info

Publication number: CN219246065U
Application number: CN202321055368.9U
Authority: CN
Inventors: 周克智; 华胜; 孙开瑞; 陆楚星; 张露; 刘衍宗
Original assignee: Beijing Etouch Technology Co ltd
Current assignee: Beijing Etouch Technology Co ltd
Priority date: 2023-05-06
Filing date: 2023-05-06
Publication date: 2023-06-23
Anticipated expiration: 2033-05-06

Abstract

The utility model provides an offline burner, which relates to the technical field of burning, and comprises a burning port; the MCU is electrically connected with a voltage output chip, a voltage conversion chip, a key, a storage chip and a level conversion chip, and is connected with the burning port through the level conversion chip; the USB interface is electrically connected with the MCU, is electrically connected with the voltage conversion chip through the voltage output chip and is electrically connected with the key and the storage chip through the voltage conversion chip respectively; the utility model is used for solving the problems that in the prior art, the burner, the chip and the computer can be connected simultaneously and then can be used for burning, the operation interface is complex, the quick burning procedure is inconvenient, and the production process is delayed.

Description

Off-line burner

Technical Field

The utility model relates to the technical field of burning, in particular to an off-line burner.

Background

In the development process of electronic products, a chip purchased from a chip manufacturer is usually a bare chip, no relevant information of a program exists in the chip, and program information needs to be burnt into the chip through a simulator or a burner. Because the circuit board is assembled on the machine in the actual development process, the program is updated again, and an engineer is required to carry a computer to the site to update the program, so that time and labor are wasted; when in production, the burner, the chip and the computer are connected at the same time, and the operation interface is complex, so that the quick burning of the program is inconvenient and the production process is delayed.

Disclosure of Invention

The present utility model is directed to an offline recorder for improving the above-mentioned problems. In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the application provides an off-line burner, comprising:

a burning port;

the MCU is electrically connected with a voltage output chip, a voltage conversion chip, a key, a storage chip and a level conversion chip, and is connected with the burning port through the level conversion chip;

the USB interface is electrically connected with the MCU, the USB interface is electrically connected with the voltage conversion chip through the voltage output chip, and the USB interface is respectively electrically connected with the keys and the storage chip through the voltage conversion chip.

Further, the LED lamp is electrically connected with the voltage conversion chip and the MCU respectively, and the LED lamp is used for displaying the working state of the off-line burner.

Furthermore, the USB interface is connected with the upper computer to be connected with a power supply for supplying power to the off-line burner.

Further, the voltage conversion chip adopts an ISL9122A chip, SDA, SCL, EN ports of the ISL9122A chip are connected with a 5V power supply end of the USB interface through resistors R4, R39 and R34 respectively, and Vout ports of the ISL9122A chip are connected with MCU, LED lamps, keys and Vcc ports of the storage chip.

Furthermore, the MCU adopts an R7FA4M2AB3CFM chip, and the R7FA4M2AB3CFM chip is connected with a USB interface through resistors R1 and R2; the R7FA4M2AB3CFM chip is connected with the level conversion chip through resistors R14, R15, R28 and R29.

Further, the key comprises four ports, wherein the port 1 is connected to the Vout port of the voltage conversion chip through a resistor R31, the port 2 is connected with the MCU, and the port 3 is grounded.

Further, the key also comprises a capacitor C16, and two ends of the capacitor C16 are respectively connected with the port 1 and the port 3.

Further, the voltage output chip is an ISL9122A chip, the ISL9122A chip is connected with the MCU through an EN pin, and an SDA port and an SCL port of the ISL9122A chip are respectively connected with a VCC end of the MCU through pull-up resistors R12 and R13.

Further, the device also comprises an AD voltage detection circuit, wherein the AD voltage detection circuit is electrically connected with the voltage output chip, the level conversion chip and the MCU and is used for detecting the stability of the input voltage of the level conversion chip.

Further, the AD voltage detection circuit comprises resistors R35 and R36 and a capacitor C21, wherein the capacitor C21 is connected in parallel with two ends of the resistor R35, one end of the resistor R35 is respectively connected with the resistor R36 and the MCU, and the other end of the resistor R35 is grounded; the resistor R36 is connected with the Vout end of the level conversion chip.

The beneficial effects of the utility model are as follows:

the utility model saves the program to the off-line burner through the upper computer, and can be separated from the computer to realize the burning of the program, thereby realizing the off-line burning of various chips, saving the time of development and production, having simple structure, low cost and simple operation. Meanwhile, the utility model also realizes stable power supply of the chip to be burned under different working voltages through the voltage conversion chip.

Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of an off-line burner according to the present utility model;

FIG. 2 is a circuit diagram of a voltage conversion chip according to the present utility model;

FIG. 3 is a circuit diagram of the MCU of the present utility model;

FIG. 4 is a circuit diagram of a key of the present utility model;

FIG. 5 is a circuit diagram of a voltage output chip of the present utility model;

fig. 6 is an AD voltage detection circuit diagram.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present utility model, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the present embodiment provides an offline burner, which includes:

a burning port;

the MCU is electrically connected with a voltage output chip, a voltage conversion chip, a key SW1, a storage chip and a level conversion chip, and is connected with the burning port through the level conversion chip;

the USB interface is electrically connected with the MCU, the USB interface is electrically connected with the voltage conversion chip through the voltage output chip, and the USB interface is respectively electrically connected with the key SW1 and the storage chip through the voltage conversion chip.

In this embodiment, the voltage conversion chip is configured to provide power for the MCU, the key SW1, and the memory chip; the voltage output chip outputs voltage to the burning port;

the burning port is connected with the chip to be burned by utilizing a preset pin according to the protocol of the chip to be burned;

the level conversion chip adopts an RS0102YH8 chip and is used for converting the level between the logic level of the MCU and the logic of the chip to be burned;

the storage chip stores and saves the program and the program information transmitted by the upper computer. In the embodiment, the storage chip adopts a W25Q16JVSNIQ chip, and the W25Q16 JVSVSNIQ chip is connected with the MCU in a QSPI communication mode, so that the storage and reading speeds are extremely high, the reading speed of a program is greatly increased, and the downloading speed is increased;

the MCU is used for controlling the operation of the key, the voltage output chip and the storage chip to realize the programming of the program.

Based on the above embodiment, the device further comprises an LED lamp, wherein the LED lamp is respectively and electrically connected with the voltage conversion chip and the MCU, and the LED lamp is used for displaying the working state of the offline burner.

Specifically, the LED lamp includes three-color lamps, which are red, green, and blue, respectively. When the offline recorder is electrified, the green LED lamp is displayed, when the offline recorder is in a recording state, the blue LED lamp is displayed, after the recording is completed, the green LED lamp is displayed, and when the recording fails, the red LED lamp is displayed.

Based on the above embodiment, the USB interface is connected to the upper computer to connect to a power supply, and is used for supplying power to the offline burner, and the communication between the offline burner and the upper computer is implemented through the CDC protocol in the USB interface, preferably, the USB interface is a TYPE C interface.

As shown in fig. 2, based on the above embodiment, the voltage conversion chip adopts an ISL9122A chip, and SDA, SCL, EN ports of the ISL9122A chip are connected with 5V power supply terminals of the USB interface through resistors R4, R39, and R34, respectively, so as to download a program in the host computer into the memory chip; the Vout port of the ISL9122A chip is connected with the MCU, the LED lamp, the key and the Vcc port of the memory chip;

in this embodiment, the voltage conversion chip converts the input unstable voltage of 1.8V-5V into 3.3V stable voltage for outputting, and supplies power to the MCU, the key SW1 and the memory chip.

As shown in fig. 3, based on the above embodiment, the MCU adopts a rensas R7FA4M2AB3CFM chip, and the R7FA4M2AB3CFM chip is connected with the USB interface through resistors R1 and R2; the R7FA4M2AB3CFM chip is connected with the level conversion chip through resistors R14, R15, R28 and R29, so that the conversion of the programming level logic is realized.

As shown in fig. 4, based on the above embodiment, the key SW1 includes four ports, where the port 1 is connected to the Vout port of the ISL9122A chip through a resistor R31, the port 2 is connected to the MCU, and the port 3 is grounded.

Based on the above embodiment, the key SW1 further includes a capacitor C16, and two ends of the capacitor C16 are respectively connected to the port 1 and the port 3;

in this embodiment, when the user presses the button SW1, the MCU will receive a low level, and then start the programming procedure; in addition, when the state of the offline recorder is abnormal, the user can conveniently operate by pressing a key to clear the error state.

As shown in fig. 5, based on the above embodiment, the voltage output chip is an ISL9122AI chip, the ISL9122A chip is connected with the MCU through the EN pin, and the SDA port and the SCL port of the ISL9122A chip are connected with the VCC terminal of the MCU through pull-up resistors R12 and R13, respectively.

As shown in fig. 6, based on the above embodiment, an AD voltage detection circuit is further included, and the AD voltage detection circuit is electrically connected to the voltage output chip, the level conversion chip, and the MCU, for detecting stability of an input voltage of the level conversion chip.

Based on the above embodiment, the AD voltage detection circuit includes resistors R35, R36 and a capacitor C21, where the capacitor C21 is connected in parallel to two ends of the resistor R35, and one end of the resistor R35 is connected to the AD ends of the resistor R36 and the MCU, respectively, and the other end is grounded; the resistor R36 is connected with the Vout end of the level conversion chip.

In this embodiment, the AD voltage detection circuit detects the voltage, compares the detected voltage with the voltage actually set, and controls the voltage output chip through the MCU when abnormal, so as to achieve stable voltage output. By ensuring the stability of the output voltage, the stability of the burning can be realized, and the accuracy of the burning is improved.

Working principle:

and then the USB interface is connected with the upper computer, a 5V power supply of the USB supplies power to the voltage output chip and the voltage conversion chip respectively, and a program and program information which are pre-configured in the upper computer are downloaded into the offline recorder. And then the chip to be burnt is connected to a burning port, the burning is started after a key is pressed, and the program in the off-line burner is burnt to the chip to finish the burning of the chip.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. An offline burner, comprising:

a burning port;

2. The offline burner of claim 1, wherein: the LED lamp is electrically connected with the voltage conversion chip and the MCU respectively, and is used for displaying the working state of the off-line burner.

3. The offline burner of claim 1, wherein: the USB interface is connected with the upper computer to be connected with a power supply for supplying power to the off-line burner.

4. The offline burner of claim 2, wherein: the voltage conversion chip adopts an ISL9122A chip, SDA, SCL, EN ports of the ISL9122A chip are connected with a 5V power supply end of the USB interface through resistors R4, R39 and R34 respectively, and Vout ports of the ISL9122A chip are connected with MCU, LED lamps, keys and Vcc ports of the memory chip.

5. The offline burner of claim 1, wherein: the MCU adopts an R7FA4M2AB3CFM chip, and the R7FA4M2AB3CFM chip is connected with the USB interface through resistors R1 and R2; the R7FA4M2AB3CFM chip is connected with the level conversion chip through resistors R14, R15, R28 and R29.

6. The offline burner of claim 1, wherein: the key comprises four ports, wherein the port 1 is connected with the Vout port of the voltage conversion chip through a resistor R31, the port 2 is connected with the MCU, and the port 3 is grounded.

7. The offline burner of claim 6, wherein: the key also comprises a capacitor C16, and two ends of the capacitor C16 are respectively connected with the port 1 and the port 3.

8. The offline burner of claim 1, wherein: the voltage output chip is an ISL9122A chip, the ISL9122A chip is connected with the MCU through an EN pin, and an SDA port and an SCL port of the ISL9122AIRNZ chip are respectively connected with a VCC end of the MCU through pull-up resistors R12 and R13.

9. The offline burner of claim 1, wherein: the device further comprises an AD voltage detection circuit, wherein the AD voltage detection circuit is electrically connected with the voltage output chip, the level conversion chip and the MCU and is used for detecting the stability of the input voltage of the level conversion chip.

10. The offline burner of claim 9, wherein: the AD voltage detection circuit comprises resistors R35 and R36 and a capacitor C21, wherein the capacitor C21 is connected in parallel with two ends of the resistor R35, one end of the resistor R35 is respectively connected with the resistor R36 and the MCU, and the other end of the resistor R35 is grounded; the resistor R36 is connected with the Vout end of the level conversion chip.