"Pocket board PURE" made by CITIZEN and saled by NTT DoCoMo. This is the board of "Pocket board PURE". Two LSI is MPU and MEMORY chip. If you click this photo,you can see same photo that the size is 1089*528 dot. The LSI on the left is 16bit MPU(called MCU) made by MITSUBISHI. The name is M30612SFP....