27SF020 Datasheet – 2 Mbit (256K x 8), Flash Memory – SST

Part Number: 27SF020

Function: 2 Mbit (256K x 8) Many-Time Programmable Flash Memory

Package: 32 PDIP Type

Manufacturer: Silicon Storage Technology


27SF020 datasheet



The SST27SF256/512/010/020 are a 32K x8 / 64K x8 / 128K x8 / 256K x8 CMOS, Many-Time Programmable (MTP) low cost flash, manufactured with SST’s proprietary, high performance SuperFlash technology. The split-gate cell design and thick oxide tunneling injector attain better reliability and manufacturability compared with alternate approaches. These MTP devices can be electrically erased and programmed at least 1000 times using an external programmer with a 12 volt power supply. They have to be erased prior to programming. These devices conform to JEDEC standard pinouts for byte-wide memories.


1. 4.5-5.5V Read Operation
2. Superior Reliability
(1) Endurance: At least 1000 Cycles
(2) Greater than 100 years Data Retention
3. Low Power Consumption
(1) Active Current: 20 mA (typical)
(2) Standby Current: 10 μA (typical)
4. Fast Read Access Time
(1) 70 ns
(2) 90 ns
5. Fast Byte-Program Operation
(1) Byte-Program Time: 20 μs (typical)
(2) Chip Program Time:
0.7 seconds (typical) for SST27SF256
1.4 seconds (typical) for SST27SF512
2.8 seconds (typical) for SST27SF010
5.6 seconds (typical) for SST27SF020
6. Electrical Erase Using Programmer
(1) Does not require UV source
(2) Chip-Erase Time: 100 ms (typical)


Other data sheets are available within the file: SST27SF020, 27SF256, 27SF512, 27SF010

27SF020 Datasheet PDF Download

27SF020 pdf