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PDF IS25WD040 Data sheet ( Hoja de datos )
| Número de pieza | IS25WD040 | |
| Descripción | 2 Mbit / 4 Mbit Single Operating Voltage Serial Flash Memory | |
| Fabricantes | ISSI | |
| Logotipo |  |
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IS25WD020/040
2 Mbit / 4 Mbit Single Operating Voltage Serial Flash Memory
With 80 MHz Dual-Output SPI Bus Interface
FEATURES
• Single Power Supply Operation
- Low voltage range: 1.65 V – 1.95 V
• Memory Organization
- IS25WD020: 256K x 8 (2 Mbit)
- IS25WD040: 512K x 8 (4 Mbit)
• Cost Effective Sector/Block Architecture
- 2Mb : Uniform 4KByte sectors / Four uniform
64KByte blocks
- 4Mb : Uniform 4KByte sectors / Eight uniform
64KByte blocks
• Serial Peripheral Interface (SPI) Compatible
- Supports single- or dual-output
- Supports SPI Modes 0 and 3
- Maximum 30 MHz clock rate for normal read
- Maximum 80 MHz clock rate for fast read
• Page Program (up to 256 Bytes) Operation
- Typical 2 ms per page program
• Sector, Block or Chip Erase Operation
- Typical 1.7 ms sector, block or chip erase
• Low Power Consumption
- Typical 2 mA active read current
- Typical 6 mA program/erase current
• Hardware Write Protection
- Protect and unprotect the device from write
operation by Write Protect (WP#) Pin
• Software Write Protection
- The Block Protect (BP2, BP1, BP0) bits allow
partial or entire memory to be configured as read-
only
• High Product Endurance
- Guaranteed 200,000 program/erase cycles per
single sector
- Minimum 20 years data retention
• Industrial Standard Pin-out and Package
- 8-pin SOIC 208mil
- 8-pin SOIC 150mil
- 8-pin VVSOP 150mil
- 8-pin WSON
- KGD (Call Factory)
- Lead-free (Pb-free) package
- Automotive Temperature Ranges Available
GENERAL DESCRIPTION
The IS25WD020/040 are 2 Mbit / 4Mbit Serial Peripheral Interface (SPI) Flash memories, providing single- or
dual-output. The devices are designed to support a 30 MHz fclock rate in normal read mode, and 80 MHz in fast
read, the fastest in the industry. The devices use a single low voltage power supply, wide operating voltage
ranging from 1.65 Volt to 1.95 Volt, to perform read, erase and program operations. The devices can be
programmed in standard EPROM programmers.
The IS25WD020/040 are accessed through a 4-wire SPI Interface consisting of Serial Data Input/Output (SlO),
Serial Data Output (SO), Serial Clock (SCK), and Chip Enable (CE#) pins. They comply with all recognized
command codes and operations. The dual-output fast read operation provides and effective serial data rate of
160MHz.
The devices support page program mode, where 1 to 256 bytes data can be programmed into the memory in
one program operation. These devices are divided into uniform 4 KByte sectors or uniform 64 KByte blocks.
The IS25WD020/040 are manufactured on pFLASH™’s advanced non-volatile technology. The devices are
offered in 8-pin SOIC 208mil, 8-pin SOIC 150mil, 8-pin VVSOP 150mil and 8-pin WSON. The devices operate at
wide temperatures between -40°C to +105°C.
Integrated Silicon Solution, Inc.- www.issi.com
Rev. F
07/31/2013
1
1 page  
Figure 2. SPI Modes Supported
SCK
Mode 0 (0, 0)
SCK
Mode 3 (1, 1)
SIO
Input mode
SO
MSb
IS25WD020/040
MSb
Integrated Silicon Solution, Inc.- www.issi.com
Rev. F
07/31/2013
5
5 Page 
DEVICE OPERATION (CONTINUED)
IS25WD020/040
RDID COMMAND (READ PRODUCT
IDENTIFICATION) OPERATION
CE# goes high. The Device ID outputs repeatedly if
The Read Product Identification (RDID) instruction is continuously send the additional clock cycles on SCK
for reading out the old style of 8-bit Electronic
while CE# is at low.
Signature, whose values are shown as table of ID
Definitions. This is not same as RDID or JEDEC ID
instruction. It’s not recommended to use for new
Table 11. Product Identification
design. For new design, please use RDID or JEDEC ID
instruction.
Product Identification
Data
The RDES instruction code is followed by three dummy
bytes, each bit being latched-in on SI during the rising
edge of SCK. Then the Device ID is shifted out on SO
First Byte
Manufacturer ID
Second Byte
9Dh
7Fh
with the MSB first, each bit been shifted out during the Device ID:
Device ID 1
Device ID 2
falling edge of SCK. The RDES instruction is ended by
IS25WD020
11h
32h
IS25WD040
12h
33h
Figure 3. Read Product Identification Sequence
CE#
SCK
SI
01
78 9
31
INSTRUCTION
1010 1011b
3 Dummy Bytes
38 39
46 47
54
HIGH IMPEDANCE
SO
Device ID1
Device ID1
Device ID1
Integrated Silicon Solution, Inc.- www.issi.com
Rev. F
07/31/2013
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet IS25WD040.PDF ] | |
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