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W25X20CL 2.5 / 3 / 3.3 V 2M-BIT SERIAL FLASH MEMORY WITH 4KB SECTORS AND DUAL I/O SPI -1- Publication Release Date: August 06, 2015 Revision F W25X20CL Table of Contents 1. 2. 3. 4. 5. 6. 7. GENERAL DESCRIPTION ......................................................................................................... 4 FEATURES ................................................................................................................................. 4 PIN CONFIGURATION SOIC 150-MIL, VSOP 150-MIL ............................................................ 5 PAD CONFIGURATION WSON 6X5-MM AND USON 2X3-MM ................................................ 5 PIN DESCRIPTION SOIC\VSOP 150-MIL, WSON 6X5-MM AND USON 2X3-MM................... 5 5.1 Package Types ............................................................................................................... 6 5.2 Chip Select (/CS) ............................................................................................................ 6 5.3 Serial Data Input, Output and IOs (DI, DO, IO0 and IO1) .............................................. 6 5.4 Write Protect (/WP) ......................................................................................................... 6 5.5 HOLD (/HOLD)................................................................................................................ 6 5.6 Serial Clock (CLK) .......................................................................................................... 6 BLOCK DIAGRAM ...................................................................................................................... 7 FUNCTIONAL DESCRIPTION.................................................................................................... 8 7.1 SPI OPERATIONS.......................................................................................................... 8 7.1.1 7.1.2 7.1.3 7.2 WRITE PROTECTION .................................................................................................... 9 7.2.1 8. Standard SPI Instructions ................................................................................................. 8 Dual SPI Instructions ........................................................................................................ 8 Hold Function .................................................................................................................... 8 Write Protect Features ...................................................................................................... 9 CONTROL AND STATUS REGISTERS ................................................................................... 10 8.1 STATUS REGISTER .................................................................................................... 10 8.1.1 8.1.2 8.1.3 8.1.4 8.1.5 8.1.6 8.1.7 8.2 BUSY .............................................................................................................................. 10 Write Enable Latch (WEL) .............................................................................................. 10 Block Protect Bits (BP1, BP0) ......................................................................................... 10 Top/Bottom Block Protect (TB) ....................................................................................... 10 Reserved Bits ................................................................................................................. 11 Status Register Protect (SRP) ........................................................................................ 11 Status Register Memory Protection ................................................................................ 12 INSTRUCTIONS ........................................................................................................... 13 8.2.1 8.2.2 8.2.3 8.2.4 8.2.5 8.2.6 8.2.7 8.2.8 8.2.9 8.2.10 8.2.11 8.2.12 8.2.13 Manufacturer and Device Identification ........................................................................... 13 Instruction Set (1) ............................................................................................................. 14 Write Enable (06h) .......................................................................................................... 15 Write Enable for Volatile Status Register (50h) ............................................................... 15 Write Disable (04h) ......................................................................................................... 16 Read Status Register (05h) ............................................................................................ 16 Write Status Register (01h) ............................................................................................. 17 Read Data (03h) ............................................................................................................. 18 Fast Read (0Bh).............................................................................................................. 19 Fast Read Dual Output (3Bh) ....................................................................................... 20 Fast Read Dual I/O (BBh) ............................................................................................. 21 Continuous Read Mode Bits (M7-0) .............................................................................. 23 Continuous Read Mode Reset (FFFFh) ........................................................................ 23 -2- Publication Release Date: August 06, 2015 Revision F W25X20CL 8.2.14 8.2.15 8.2.16 8.2.17 8.2.18 8.2.19 8.2.20 8.2.21 8.2.22 8.2.23 8.2.24 9. ELECTRICAL CHARACTERISTICS ......................................................................................... 36 9.1 Absolute Maximum Rating(1)(2) ................................................................................... 36 9.2 10. 11. 12. Page Program (02h) ..................................................................................................... 24 Sector Erase (20h) ........................................................................................................ 25 32KB Block Erase (52h) ................................................................................................ 26 Block Erase (D8h) ......................................................................................................... 27 Chip Erase (C7h or 60h) ............................................................................................... 28 Power-down (B9h) ........................................................................................................ 29 Release Power-down / Device ID (ABh) ....................................................................... 30 Read Manufacturer / Device ID (90h) ........................................................................... 32 Read Manufacturer / Device ID Dual I/O (92h) ............................................................. 33 Read Unique ID Number (4Bh) ..................................................................................... 34 JEDEC ID (9Fh) ............................................................................................................ 35 Operating Ranges ......................................................................................................... 36 Power-up Timing and Write Inhibit Threshold(1) .......................................................... 37 9.3 9.4 DC Electrical Characteristics ........................................................................................ 38 9.5 AC Measurement Conditions ........................................................................................ 39 9.6 AC Electrical Characteristics ........................................................................................ 40 AC Electrical Characteristics (cont’d) ........................................................................................ 41 9.7 Serial Output Timing ..................................................................................................... 42 9.8 Serial Input Timing ........................................................................................................ 42 9.9 /HOLD Timing ............................................................................................................... 42 9.10 /WP Timing ................................................................................................................... 42 PACKAGE SPECIFICATION .................................................................................................... 43 10.1 8-Pin SOIC 150-mil (Package Code SN) ...................................................................... 43 10.2 8-Pin VSOP8 150-mil (Package Code SV) ................................................................... 44 10.3 8-Pad 6x5mm WSON (Package Code ZP) .................................................................. 45 10.4 8-Pad USON 2x3-mm (Package Code UX) .................................................................. 47 ORDERING INFORMATION(1) ................................................................................................ 48 11.1 VALID PART NUMBERS AND TOP SIDE MARKING...................................................... 49 REVISION HISTORY ................................................................................................................ 50 -3- Publication Release Date: August 06, 2015 Revision F W25X20CL 1. GENERAL DESCRIPTION The W25X20CL (2M-bit) Serial Flash memories provide a storage solution for systems with limited space, pins and power. The 25X series offers flexibility and performance well beyond ordinary Serial Flash devices. They are ideal for code download applications as well as storing voice, text and data. The devices operate on a single 2.3V to 3.6V power supply with current consumption as low as 1mA active and 1µA for power-down. All devices are offered in space-saving packages. The W25X20CL arrays are organized into 1,024 programmable pages of 256-bytes each. Up to 256 bytes can be programmed at a time. The W25X20CL have 64 erasable sectors, 2/4/8 erasable 32KB blocks and 4 erasable 64KB blocks respectively. The small 4KB sectors allow for greater flexibility in applications that require data and parameter storage. (See figure 2.) The W25X20CL support the standard Serial Peripheral Interface (SPI), and a high performance dual output as well as Dual I/O SPI: Serial Clock, Chip Select, Serial Data DI (I/O0), DO (I/O1). SPI clock frequencies up to 104MHz are supported allowing equivalent clock rates of 208MHz when using the Fast Read Dual Output instruction. These transfer rates are comparable to those of 8 and 16-bit Parallel Flash memories. The Continuous Read Mode allows for efficient memory access with as few as 16-clocks of instruction-overhead to read a 24-bit address, allowing true XIP (execute in place) operation. A Hold pin, Write Protect pin and programmable write protect, with top or bottom array control features, provide further control flexibility. Additionally, the device supports JEDEC standard manufacturer and device identification with a 64-bit Unique Serial Number. 2. FEATURES  Family of Serial Flash Memories – W25X20CL: 2M-bit/256K-byte (262,144) – 256-bytes per programmable page – Uniform erasable 4KB, 32KB & 64KB regions.  Software and Hardware Write Protection – Write-Protect all or portion of memory – Enable/Disable protection with /WP pin – Top or bottom array protection  SPI with Single / Dual Outputs / I/O – Standard SPI: CLK, /CS, DI, DO, /WP, /Hold – Dual SPI: CLK, /CS, IO0, IO1, /WP, /Hold  Flexible Architecture with 4KB sectors – Uniform Sector/Block Erase (4/32/64-kbytes) – Page program up to 256 bytes