Patent ID: 7295476
Filing Date: 2007-11-13
Classification: G06F,G11C,H01L,Y02D

Abstract:
1. A method for manufacturing a printed board on which a semiconductor device is mounted, the method comprising: preparing a resin sealed semiconductor device including a semiconductor substrate on which a CPU and a nonvolatile memory having a plurality of memory blocks are formed, wherein a memory capacity of one memory block is less than a memory capacity of another memory block, wherein the semiconductor device has (1) a first mode for writing a program and/or data supplied from outside of the semiconductor substrate into the nonvolatile memory by a PROM writer, and (2) a second mode for writing a program and/or data supplied from outside of the semiconductor substrate into the nonvolatile memory by executing a write control program with the CPU; writing the program and/or data to the nonvolatile memory in the semiconductor device by the PROM writer; mounting the semiconductor device onto the printed board; and after mounting the semiconductor device on the printed board, in the second mode, executing the write control program by the CPU for writing programs, a program size of one of which is larger than that of another of which, to write the program having the larger program size into a block having a large memory capacity and to write the program having the smaller program size into a memory block having a small memory capacity.