CN210721436U

CN210721436U - Burner for microcontroller parameter calibration

Info

Publication number: CN210721436U
Application number: CN201921682119.6U
Authority: CN
Inventors: 裴德杨; 李寿建; 冯兵; 梁青武
Original assignee: Shanghai Lingwobo Intelligent Technology Co ltd
Current assignee: Shanghai Lingwobo Intelligent Technology Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-09
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a burn record ware for microcontroller parameter calibration should burn record ware and be connected with PC and microcontroller MCU respectively, the burn record ware include main control chip, first communication circuit, second communication circuit, D trigger, memory, reference voltage input interface, reference power and LDO power, main control chip be connected with first communication circuit, second communication circuit, D trigger, memory, reference voltage input interface, reference power and LDO power respectively, first communication circuit be connected with PC, second communication circuit, D trigger and reference voltage input interface be connected with microcontroller MCU respectively. Compared with the prior art, the utility model has the advantages of provide higher calibration accuracy, shorten development production cycle.

Description

Burner for microcontroller parameter calibration

Technical Field

The utility model relates to a burn record technique for microcontroller especially relates to a burn record ware for microcontroller parameter calibration.

Background

Microcontroller (MCU) chips are manufactured through Wafer fabrication (Wafer Fab) several links from production to finished product sale. Second, Wafer test (Wafer Probe). And thirdly, packaging and packaging Test (Assembly & Test).

In the Wafer Probe stage, parameters such as short circuit, low power consumption, frequency and reference voltage of pins of the chip need to be tested, and defective products in the parameters are eliminated.

In the Assembly and Test stage, the frequency and the reference voltage parameters of the chip need to be tested again, adjusted and repaired to be within a standard range, and the parameters are written into an information area of the chip, so that the normal use of the chip can be ensured. Calibrating the chip frequency and reference voltage parameters at this stage has the drawback that,

the test precision and yield are not ideal: the parameters cannot be adjusted to the optimal value due to the performance limitation of the tester, and the testing precision is poor. Meanwhile, due to the testing mode, the yield of the chip is reduced.

There is a limit to client use: the client uses COB binding for cost reasons, and the foundries provide the wafers to the clients, which need to calibrate the parameters themselves. Or the customer needs to modify the chip frequency and the reference voltage parameters due to the scheme limitation.

In this case, the parameters cannot be readjusted back to the factory. Parameters can be modified only through other ways, and great inconvenience is brought to production and development of customers.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to overcome the above-mentioned drawbacks of the prior art, and provides a recorder for calibrating microcontroller parameters, which can provide higher calibration accuracy.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a burn record ware for microcontroller parameter calibration, this burn record ware is connected with PC and microcontroller MCU respectively, the burn record ware include main control chip, first communication circuit, second communication circuit, D trigger, memory, reference voltage input interface, reference power and LDO power, main control chip be connected with first communication circuit, second communication circuit, D trigger, memory, reference voltage input interface, reference power and LDO power respectively, first communication circuit be connected with the PC, second communication circuit, D trigger and reference voltage input interface be connected with microcontroller MCU respectively.

Preferably, the first communication circuit is a USB Type-B data line.

Preferably, the memory is a flash memory.

Preferably, the reference power supply is a TL431 reference power supply.

Preferably, the burner further comprises an LED indicator light connected with the main control chip.

Preferably, the burner further comprises a key connected with the main control chip.

Compared with the prior art, the utility model has the advantages of it is following:

1) the calibration of the frequency and the reference voltage of the microcontroller is realized through a D trigger, a reference voltage input interface and the like of the burner, and the burner is flexibly controlled, so that higher calibration precision can be provided, and the product performance is improved;

2) the burning function and the calibration function are integrated on the burner, so that the practical application requirements of users can be better met, and the development and production period is shortened.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in fig. 1, a burner for calibrating microcontroller parameters, the burner 1 is connected to a PC 2 and a microcontroller MCU 3, the burner 1 includes a main control chip 11, a first communication circuit 12, a second communication circuit 13, a D flip-flop 14, a memory 15, a reference voltage input interface 16, a reference power supply 17 and an LDO power supply 18, the main control chip 11 is connected to the first communication circuit 12, the second communication circuit 13, the D flip-flop 14, the memory 15, the reference voltage input interface 16, the reference power supply 17 and the LDO power supply 18, the first communication circuit 12 is connected to the PC 2, and the second communication circuit 13, the D flip-flop 14 and the reference voltage input interface 16 are connected to the microcontroller MCU 3.

The first communication circuit 12 is a USB Type-B data line. The memory 15 is a flash memory. The reference power supply 17 is a TL431 reference power supply. The burner also comprises an LED indicator lamp 19 and a key 110 which are respectively connected with the main control chip 11.

The utility model discloses an increase extra circuit on the ware of burning record, burn on function basis original chip, extension frequency calibration function and reference voltage calibration function. The production and development requirements of the client are met.

In an online mode, the PC end starts a burner calibration function, information such as a calibration standard value and burning data is sent to the burner, the burner stores the data into the flash, after the PC end issues a burning command, the burner main control chip reads the data from the flash, the external MCU is burned, the frequency and the reference voltage are calibrated, and a calibration result is written into an information area.

In the off-line mode, information such as a calibration nominal value and burning data needs to be downloaded into the burner flash in advance, the burner does not need to be connected with the PC, the external MCU can be burned through the keys as long as the burner is powered on, the frequency and the reference voltage can be calibrated at the same time, and the calibration result is written into the information area.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a burn record ware for microcontroller parameter calibration, this burn record ware is connected with PC and microcontroller MCU respectively, its characterized in that, the burn record ware include main control chip, first communication circuit, second communication circuit, D flip-flop, memory, reference voltage input interface, reference power and LDO power, main control chip be connected with first communication circuit, second communication circuit, D flip-flop, memory, reference voltage input interface, reference power and LDO power respectively, first communication circuit be connected with the PC, second communication circuit, D flip-flop and reference voltage input interface be connected with microcontroller MCU respectively.

2. The programmer for parameter calibration of microcontrollers according to claim 1, characterized in that said first communication circuit is a USB Type-B data line.

3. The burner of claim 1, wherein the memory is a flash memory.

4. The burner of claim 1, wherein the reference power supply is a TL431 reference power supply.

5. The burner for microcontroller parameter calibration as claimed in claim 1, wherein the burner further comprises an LED indicator light connected to the main control chip.

6. The burner of claim 1, further comprising a key connected to the main control chip.