Semiconductor device
AssigneeRenesas Electronics Corporation
InventorsIwao SUZUKI, Naoki KATO
Life of this patent
Estimating the term…
Abstract
A semiconductor device that can be caused to easily generate an internal pseudo error is provided. Error detection circuits detect an error occurring in the semiconductor device and output error signals that are detection results. An error injection circuit outputs predetermined error signals at a predetermined timing. A selection circuit selects either the outputs of the error detection circuits or the outputs of the error injection circuit in accordance with a mode signal, and determines the selected outputs as an output of an error register.
Claims14
A semiconductor device configured by a single semiconductor chip, comprising:
- an error detection circuit that detects an error occurring in the semiconductor device and outputs a first error signal that is a result of detection;
- an error injection circuit that outputs a predetermined second error signal at a predetermined timing;
- an error register, and
- a selection circuit that selects either an output of the error detection circuit or an output of the error injection signal in accordance with a mode signal, and determines the selected output as an output of the error register.
A semiconductor device configured by a single semiconductor chip, comprising:
- a bus;
- a plurality of internal circuits coupled to the bus, any of which is a processor circuit;
- a memory circuit that holds a main body program executed by the processor circuit;
- a plurality of error detection circuits that detect an error occurring in the internal circuits and output first error signals that are results of the detection;
- an error injection circuit that outputs a signal indicating no error as an initial value and outputs a predetermined second error signal at a predetermined timing;
- an error register, and
- a selection circuit to which outputs of the error detection circuit and an output of the error injection circuit are input and which selects either one of the outputs in accordance with a mode signal and writes the selected output(s) to the error register.
Dependencies are inferred from the claim text.