Patent ID: 7616140
Filing Date: 2009-11-10
Classification: G06F

Abstract:
1. An A/D converter for A/D-converting analog signals input from a plurality of channels, comprising: a channel-selecting section selecting channels from said plurality of channels, for A/D conversion of the analog signals; an A/D conversion section sequentially A/D-converting the analog signals from the selected channels on a channel-by-channel basis; a FIFO including a plurality of stages of storage areas, and sequentially storing results of A/D conversion on a channel-by-channel basis in different ones of the plurality of stages; a stage number-counting section counting a number of stages of said FIFO where the results of A/D conversion are stored; an interrupt-generating stage number-setting section setting an interrupt-generating stage number; and an interrupt signal-delivering section delivering an interrupt signal for requesting a control circuit reading the results of A/D conversion to read the results of A/D conversion, when the number of stages counted by said stage number-counting section becomes equal to the interrupt-generating stage number.