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PDF IS25LD040 Data sheet ( Hoja de datos )
| Número de pieza | IS25LD040 | |
| Descripción | 4Mbit Single Operating Voltage Serial Flash Memory | |
| Fabricantes | ISSI | |
| Logotipo |  |
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4 Mbit Single Operating Voltage Serial Flash Memory
With 100 MHz Dual-Output SPI Bus Interface
IS25LD040
FEATURES
• Single Power Supply Operation
- Low voltage range: 2.3 V - 3.6 V
• Memory Organization
- IS25LD040: 512K x 8 (4 Mbit)
• Cost Effective Sector/Block Architecture
- 4Mb : Uniform 4KByte sectors / Eight uniform
64KByte blocks
• Low standby current 1uA (Typ)
• Serial Peripheral Interface (SPI) Compatible
- Supports single- or dual-output
- Supports SPI Modes 0 and 3
- Maximum 33 MHz clock rate for normal read
- Maximum 100 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
- Maximum 10ms sector, block or chip erase
• Low Power Consumption
- Typical 10 mA active read current
- Typical 15 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 150mil SOIC
- 8-pin 208mil SOIC
- 8-pin 300mil PDIP
- 8-contact WSON
- 8-pin 150mil VVSOP
- Lead-free (Pb-free), package
GENERAL DESCRIPTION
The IS25LD040 are 4Mbit Serial Peripheral Interface (SPI) Flash memories, providing single- or dual-output.
The devices are designed to support a 33 MHz clock rate in normal read mode, and 100 MHz in fast read, the
fastest in the industry. The devices use a single low voltage power supply, wide operating voltage ranging from
2.3 Volt to 3.6 Volt, to perform read, erase and program operations. The devices can be programmed in
standard EPROM programmers.
The IS25LD040 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 200MHz.
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 IS25LD040 are manufactured on pFLASH™’s advanced non-volatile technology. The devices are offered in
8-pin SOIC 150mil, 8-contact WSON, 8-pin VVSOP 150mil, 8-pin 208mil SOIC and 8-pin 300mil PDIP. The
devices operate at wide temperatures between -40°C to +105°C.
Integrated Silicon Solution, Inc.- www.issi.com
Rev. A
09/12/2012
1
1 page  
Figure 2. SPI Modes Supported
SCK
Mode 0 (0, 0)
SCK
Mode 3 (1, 1)
SIO
Input mode
SO
MSb
IS25LD040
MSb
Integrated Silicon Solution, Inc.- www.issi.com
Rev. A
09/12/2012
5
5 Page 
IS25LD040
DEVICE OPERATION (CONTINUED)
RDID COMMAND (READ PRODUCT
IDENTIFICATION) OPERATION
manufacturer ID is shifted out, the manufacturer ID and
The Read Product Identification (RDID) instruction is device ID will be looping until the pulled high of CE#
for reading out the old style of 8-bit Electronic
signal.
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 RDID instruction code is followed by three dummy
bytes, each bit being latched-in on SIO during the
rising edge of SCK. Then the first manufacturer ID
First Byte
Manufacturer ID
Second Byte
9Dh
7Fh
(9Dh) is shifted out on SO with the MSB first, followed Device ID:
by the device ID and the second manufacturer ID
(7Fh), each bit been shifted out during the falling edge
IS25LD040
7E
of SCK. If the CE# stays low after the last bit of second
Figure 3. Read Product Identification Sequence
CE#
SCK
SI
01
78 9
31
INSTRUCTION 3 Dummy By tes
1010 1011b
38 39
46 47
54
HIGH IMPEDANCE
SO
Manuf acture ID1
Dev ice ID
Manuf acture ID2
Integrated Silicon Solution, Inc.- www.issi.com
Rev. A
09/12/2012
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet IS25LD040.PDF ] | |
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