Document
SO8 (MN) 150 mil width
TSSOP8 (DW) 169 mil width
WFDFPN8 (MF) 2 x 3 mm
M95020-A125 M95020-A145
Automotive 2-Kbit serial SPI bus EEPROMs with high-speed clock
Datasheet - production data
Features
• Compatible with the Serial Peripheral Interface (SPI) bus
• Memory array – 2 Kbit (256 Kbyte) of EEPROM – Page size: 16 byte – Write protection by block: 1/4, 1/2 or whole memory – Additional Write lockable Page (Identification page)
• Extended temperature and voltage ranges – Up to 125 °C (VCC from 1.7 V to 5.5 V) – Up to 145 °C (VCC from 2.5 V to 5.5 V)
• High speed clock frequency – 20 MHz for VCC ≥ 4.5 V – 10 MHz for VCC ≥ 2.5 V – 5 MHz for VCC ≥ 1.7 V
• Schmitt trigger inputs for noise filtering
• Short Write cycle time – Byte Write within 4 ms – Page Write within 4 ms
• Write cycle endurance – 4 million Write cycles at 25 °C – 1.2 million Write cycles at 85 °C – 600 k Write cycles at 125 °C – 400 k Write cycles at 145 °C
• Data retention – 50 years at 125 °C – 100 years at 25 °C
• ESD Protection (Human Body Model) – 4000 V
• Packages – RoHS-compliant and halogen-free (ECOPACK2®)
February 2016
This is information on a product in full production.
DocID025284 Rev 5
1/41
www.st.com
Contents
Contents
M95020-A125 M95020-A145
1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Signal description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.1 Serial Data output (Q) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.2 Serial Data input (D) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 Serial Clock (C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 Chip Select (S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.5 Hold (HOLD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.6 Write Protect (W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.7 VSS ground . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.8 VCC supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3 Operating features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Active power and Standby power modes . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.2 SPI modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 3.3 Hold mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 3.4 Protocol control and data protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
3.4.1 Protocol control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..