Single-chip microcomputer programming control system, single-chip microcomputer and single-chip microcomputer programming control method

The invention discloses a single-chip microcomputer programming control system. The single-chip microcomputer programming control system comprises a detecting unit, a locking unit, a programming processing unit and a time monitoring unit. The detecting unit is used for detecting whether the voltage of programming control pins of a single-chip microcomputer is larger than a specified threshold, and emits first enable signals if the voltage of the programming control pins of the single-chip microcomputer is larger than the specified threshold. The time monitoring unit is used for monitoring whether the single-chip microcomputer is within a first specified period; if the single-chip microcomputer is within the first specified period, the time monitoring unit switches off the locking unit, so that the locking unit is allowed to send the first enable signals to the programming processing unit; and if the single-chip microcomputer is not within the first specified period, the time monitoring unit switches on the lo