
SA25C020 Advanced Information
SAIFUN
3
Table of Contents
Features........................................................................... 1
General Description........................................................ 2
Memory Organization...................................................... 5
Connection Diagrams..................................................... 6
Ordering Information ...................................................... 7
Product Specifications ................................................... 8
Absolute Maximum Ratings....................................... 8
ESD/Latch Up Specification (JEDEC 8 Spec) ........... 8
Operating Conditions................................................. 8
DC Characteristics.......................................................... 9
AC Test Conditions....................................................... 10
Timing Diagrams........................................................... 11
Signal Description......................................................... 13
Chip Select (CSb).................................................... 13
Serial Clock (SCK) .................................................. 13
Serial Input (SI)....................................................... 13
Serial Output (SO)................................................... 13
Hold (HOLDb).......................................................... 13
Write Protect (WPb)................................................ 13
Serial Interface Description.......................................... 14
SPI Modes............................................................... 14
Master............................................................. 14
Slave............................................................... 14
Transmitter/Receiver....................................... 14
Serial Opcode.................................................. 14
Invalid Opcode ................................................ 14
Chip Select (CSb)............................................ 15
Hold Condition................................................. 15
Write Protect ................................................... 16
Functional Description ................................................. 17
Instructions.............................................................. 17
Read Status Register (RDSR)................................. 18
Write Enable (WREN) ............................................. 20
Write Disable (WRDI).............................................. 20
Write Status Register (WRSR)................................ 21
Read Data Bytes (READ)........................................ 23
Byte or Page Write (PW)......................................... 24
Read Electronic Signature (Read_Id) ...................... 26
Powerup and Powerdown........................................ 27
Physical Dimensions..................................................... 28
Contact Information...................................................... 31
Life Support Policy........................................................ 31