now i want to read/program this mcu,but this chip is too old,and the reference is so little.i want to kown whick pins i must connect.
You can reference the following document for debugger / programmer connection with the E8a (e.g. for use with FDT):
E8a Emulator Additional Document for User's Manual (Notes on Connecting R32C/111,116,116A,117,117A,118,118A, 120,121,145,151,152,153,156,157,160 and 161) Rev.7.00