A neural network circuit that can be embedded in an embedded device such as an IoT device, and that provides high performance. The neural network circuit includes a first memory unit that stores input data; a convolution operation circuit that performs a convolution operation on a weight and the input data stored in the first memory unit; a second memory unit that stores convolution operation output data from the convolution operation circuit; and a quantization operation circuit that performs a quantization operation on the convolution operation output data stored in the second memory unit; wherein the first memory unit stores a quantization operation output data from the quantization operation circuit; and the convolution operation circuit performs the convolution operation on the quantization operation output data stored in the first memory unit as the input data.