IS25LQ032B/016B/080B
Integrated Silicon Solution, Inc.- www.issi.com
Rev. H2
06/27/2016
TABLE OF CONTENTS
FEATURES .......................................................................................................................................................... 2
GENERAL DESCRIPTION .................................................................................................................................. 3
TABLE OF CONTENTS ....................................................................................................................................... 4
1. PIN CONFIGURATION ................................................................................................................................. 6
2. PIN DESCRIPTIONS .................................................................................................................................... 8
3. BLOCK DIAGRAM ........................................................................................................................................ 9
4. SPI MODES DESCRIPTION ...................................................................................................................... 10
5. SYSTEM CONFIGURATION ...................................................................................................................... 12
5.1 BLOCK/SECTOR ADDRESSES .......................................................................................................... 13
6. REGISTERS ............................................................................................................................................... 14
6.1. STATUS REGISTER ........................................................................................................................... 14
6.2. FUNCTION REGISTER ....................................................................................................................... 17
7. PROTECTION MODE................................................................................................................................. 18
7.1 HARDWARE WRITE PROTECTION.................................................................................................... 18
7.2 SOFTWARE WRITE PROTECTION .................................................................................................... 18
8. DEVICE OPERATION ................................................................................................................................ 19
8.1 READ DATA OPERATION (RD, 03h) .................................................................................................. 20
8.2 FAST READ DATA OPERATION (FR, 0Bh) ........................................................................................ 22
8.3 HOLD OPERATION .............................................................................................................................. 23
8.4 FAST READ DUAL I/O OPERATION (FRDIO, BBh) ........................................................................... 23
8.5 FAST READ DUAL OUTPUT OPERATION (FRDO, 3Bh) .................................................................. 26
8.6 FAST READ QUAD OUTPUT (FRQO, 6Bh) ........................................................................................ 28
8.7 FAST READ QUAD I/O OPERATION (FRQIO, EBh) .......................................................................... 30
8.8 PAGE PROGRAM OPERATION (PP, 02h) .......................................................................................... 33
8.9 QUAD INPUT PAGE PROGRAM OPERATION (PPQ, 32h/38h) ........................................................ 34
8.10 ERASE OPERATION ......................................................................................................................... 35
8.11 SECTOR ERASE OPERATION (SER, D7h/20h) ............................................................................... 35
8.12 BLOCK ERASE OPERATION (BER32K:52h, BER64K:D8h) ............................................................ 36
8.13 CHIP ERASE OPERATION (CER, C7h/60h) ..................................................................................... 37
8.14 WRITE ENABLE OPERATION (WREN, 06h) .................................................................................... 38
8.15 WRITE DISABLE OPERATION (WRDI, 04h) ..................................................................................... 38
8.16 READ STATUS REGISTER OPERATION (RDSR, 05h) ................................................................... 39
8.17 WRITE STATUS REGISTER OPERATION (WRSR, 01h) ................................................................. 39
8.18 READ FUNCTION REGISTER OPERATION (RDFR, 48h) ............................................................... 40
8.19 WRITE FUNCTION REGISTER OPERATION (WRFR, 42h)............................................................. 40
8.20 PROGRAM/ERASE SUSPEND & RESUME ...................................................................................... 41