Serial EEPROM XCF01S (TSSOP20, 170 mil)
1Mb, 128KB (131.072 byte), 2 0000 hex 8 bit
pinout
+--\/--+
CS |1 20| Vcc
SK |2 19| NC
DI |3 18| NC
DO |4 17| GND
CS |5 16| Vcc
SK |6 15| NC
DI |7 14| NC
DO |8 13| GND
DI |9 12| NC
DO |10 11| GND
+------+