M93S56-125

M93S66-125 M93S56-125 M93S46-125 Automotive 4-Kbit, 2-Kbit and 1-Kbit MICROWIRE serial EEPROM with block protection Datasheet − production data Features ■ Industry standard MICROWIRETM bus ■ Single supply voltage: 2.5 to 5.5 V ■ Single organization: by word (x16) ■ Programming instructions that work on: word or entire memory ■ Self-timed programming cycle with auto-erase ■ User-defined write-protected area ■ Page Write mode (4 words) ■ Ready/Busy signal during programming ■ Speed: 2-MHz clock rate, 5 ms write time ■ Sequential Read operation ■ Enhanced ESD/Latch-up behavior ■ More than 1 million Erase/Write cycles ■ More than 40-year data retention SO8 (MN) 150 mil width March 2012 This is information on a product in full production. Doc ID 022567 Rev 1 1/28 www.st.com 1 Contents Contents M93S66-125 M93S56-125 M93S46-125 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Power-on data protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3 Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 Read . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.2 Write Enable and Write Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3.3 Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...