MICROCONTROLLER AND CONTROL METHOD OF MICROCONTROLLER

• Main Authors: NISHIKAWA TAKURO, FUJIGAYA MASAKI
• Format: Patent
• Language: English; Japanese
• Published: 18.04.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

To provide a microcontroller suppressing power consumption at debugging.SOLUTION: A microcontroller 100 according to the present invention comprises a first signal processing circuit 111, a second signal processing circuit conducting the same signal processing as the first signal processing circuit 113, a comparator 117 that compares a processing result of the first signal processing circuit with a processing result of the second signal processing circuit, and outputs an error signal when detecting an error, a suppression signal input part that receives a suppression signal to suppress operations of the second signal processing circuit and the comparator 117, a suppression circuit 170 that receives a suppression signal from the suppression signal input part and suppresses operations of the second signal processing circuit and the comparator, and a pseudo-error signal output circuit 112 outputs a pseudo-error signal instead of an error signal when the operations of the second signal processing circuit and the comparator are suppressed.SELECTED DRAWING: Figure 2 【課題】デバッグ時の消費電力増加を抑制したマイクロコントローラを提供すること。【解決手段】本発明にかかるマイクロコントローラ１００は、第１信号処理回路１１１と、第１信号処理回路と同様の信号処理をする第２信号処理回路１１３と、第１信号処理回路の処理結果と第２信号処理回路の処理結果とを比較してエラーを検出した場合にはエラー信号を出力する比較回路１１７と、第２信号処理回路及び比較回路１１７の動作を抑制するための抑制信号を受け取る抑制信号入力部と、抑制信号入力部から抑制信号を受け取り、第２信号処理回路及び比較回路の動作を抑制する抑制回路１７０と、第２信号処理回路及び比較回路の動作を抑制した場合に、エラー信号に代えて、擬似エラー信号を出力する擬似エラー信号出力回路１１２と、を備える。【選択図】図２