| 摘要 |
PROBLEM TO BE SOLVED: To provide a power saving type color palette RAM. SOLUTION: This color palette RAM 100 is provided with RAM 101 that stores color information, an address register 102 which holds an input address and outputs an address to the RAM 101 and a comparator circuit 103 which compares the input address with an address that is outputted by the address register, outputs a coincidence signal when those addresses coincide and stops the operation of the RAM 101 based on the coincidence signal. For this, e.g. when pixels of the same color adjoin, i.e., when access to the same address on color palette RAM is continuously performed, it is possible to make the RAM 101 a disable state and to suppress current that is consumed by a precharge operation, etc.
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