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8 Identifying the S1D13705

There are several similar products in the 135X and 137X LCD controller families. Products which can share significant portions of a generic code base. It may be important for a program to identify between products at run time.

Identification of the S1D13705 can be performed any time after the system has been powered up by reading REG[00h], the Revision Code register. The six most significant bits form the product identification code and the two least significant bits form the product revision.

From reset (power on) the steps to identifying the S1D13705 are as follows:

1.Read REG[00h]. Mask off the lower two bits, the revision code, to obtain the product code.

2.The product code for the S1D13705 is 024h.

Programming Notes and Examples

S1D13705

Issue Date: 02/01/22

X27A-G-002-03

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Epson technical manual Identifying the S1D13705