Semiconductor chip and control method thereof

Abstract

Embodiments of the present disclosure provide a semiconductor chip and a control method thereof. The semiconductor chip includes: a first pin; a second pin; a non-volatile memory; a programming module configured to program calibration data into the non-volatile memory when a programming command is received; and a controller coupled to The first pin, the second pin and the programming module are configured to: when the semiconductor chip is powered on, if the command received from the host computer via the first pin is a preset byte, the semiconductor chip enters the calibration mode, if it is not a preset byte, the semiconductor chip enters the normal working mode; in the calibration mode, the internal clock frequency is output through the first pin; the calibration data is received through the first pin; the programming is received through the first pin enable command; and cause the programming module to program using the calibration data based on the program enable command. The semiconductor chip described here can utilize two pins to realize various functions.

Description

technical field [0001] Embodiments of the present disclosure generally relate to the field of integrated circuits, and more specifically, relate to a semiconductor chip and a control method thereof. Background technique [0002] After the chip leaves the factory, it needs to enter the test mode to calibrate the internal oscillator clock of the chip in batches, and write the calibration content into the non-volatile memory of the chip. Common calibration schemes include the following. [0003] 1. In test mode, the chip uses an external accurate clock to self-calibrate the internal clock, or uses an internal accurate clock to self-calibrate the internal inaccurate clock. Write calibration parameters to registers. The upper computer reads out the calibration parameters of the register, and then writes them into the non-volatile memory of the chip by using another operation method in another operation mode. This calibration scheme requires an accurate clock provided externall...

AI Technical Summary

Problems solved by technology

In the batch operation after the chip leaves the factory, it takes too long to re-power on and stabilize

[0004] 2. The chip works with an inaccurate clock and outputs the inaccurate clock from a certain pin of the chip

[0009] It can be seen that using the existing communication protocol to communicate the calibration of the chip usually requires an accurate clock to achieve accurate programming, but this requires more pins

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