MX25L4005A
4M-BIT [x 1] CMOS SERIAL FLASH
FEATURES
GENERAL
• Serial Peripheral Interface (SPI) compatible -- Mode 0 and Mode 3
• 4,194,304 x 1 bit structure
• 128 Equal Sectors with 4K byte each
- Any Sector can be erased individually
• 8 Equal Blocks with 64K byte each
- Any Block can be erased individually
• Single Power Supply Operation
- 2.7 to 3.6 volt for read, erase, and program operations
• Latch-up protected to 100mA from -1V to Vcc +1V
• Low Vcc write inhibit is from 1.5V to 2.5V
PERFORMANCE
• High Performance
- Fast access time: 85MHz serial clock (15pF + 1TTL Load) and 66MHz serial clock (30pF + 1TTL Load)
- Fast program time: 1.4ms(typ.) and 5ms(max.)/page (256-byte per page)
- Fast erase time: 60ms(typ.) and 120ms(max.)/sector (4K-byte per sector) ; 1s(typ.) and 2s(max.)/block (64K-byte per
block)
• Low Power Consumption
- Low active read current: 12mA(max.) at 85MHz, 8mA(max.) at 66MHz and 4mA(max.) at 33MHz
- Low active programming current: 15mA (max.)
- Low active erase current: 15mA (max.)
- Low standby current: 10uA (max.)
- Deep power-down mode 1uA (typical)
• Minimum 100,000 erase/program cycles
• 10 years data retention
SOFTWARE FEATURES
• Input Data Format
- 1-byte Command code
• Block Lock protection
- The BP0~BP2 status bit defines the size of the area to be software protected against Program and Erase instructions
• Auto Erase and Auto Program Algorithm
-
Automatically erases and verifies data at selected sector
-
Automatically programs and verifies data at selected page by an internal algorithm that automatically times the
program pulse widths (Any page to be programed should have page in the erased state first)
•
Status Register Feature
•
Electronic Identification
-
JEDEC 2-byte Device ID
- RES command, 1-byte Device ID
HARDWARE FEATURES
•
SCLK Input
-
Serial clock input
• SI Input
-
Serial Data Input
• SO Output
-
Serial Data Output
• WP# pin
-
Hardware write protection
P/N: PM1231
REV. 1.8, JUL. 17, 2008
1
MX25L4005A
• HOLD# pin
-
pause the chip without diselecting the chip
• PACKAGE
-
8-pin SOP (150mil)
-
8-pin SOP (200mil)
-
8-pin PDIP (300mil)
- 8-land SON (6x5mm, 1.0mm package height), which is not recommended for new design
- 8-land WSON (6x5mm, 0.8mm package height)
- 8-land USON (4x4mm) in development
-
All Pb-free devices are RoHS Compliant
GENERAL DESCRIPTION
The MX25L4005A is a CMOS 4,194,304 bit serial Flash memory, which is configured as 524,288 x 8 internally. The
MX25L4005A feature a serial peripheral interface and software protocol allowing operation on a simple 3-wire bus. The three
bus signals are a clock input (SCLK), a serial data input (SI), and a serial data output (SO). SPI access to the device is
enabled by CS# input.
The MX25L4005A provide sequential read operation on whole chip.
After program/erase command is issued, auto program/ erase algorithms which program/ erase and verify the specified
page or byte /sector/block locations will be executed. Program command is executed on page (256 bytes) basis, and erase
command is executes on chip or sector(4K-bytes) or block(64K-bytes).
To provide user with ease of interface, a status register is included to indicate the status of the chip. The status read
command can be issued to detect completion status of a program or erase operation via WIP bit.
When the device is not in operation and CS# is high, it is put in standby mode and draws less than 10uA DC current.
The MX25L4005A utilize MXIC's proprietary memory cell, which reliably stores memory contents even after 100,000
program and erase cycles.
PIN CONFIGURATIONS
8-PIN SOP (150/200mil)
VCC
HOLD#
SCLK
SI
PIN DESCRIPTION
8-PIN PDIP (300mil)
SYMBOL
CS#
SI
SO
SCLK
HOLD#
WP#
VCC
GND
DESCRIPTION
Chip Select
Serial Data Input
Serial Data Output
Clock Input
Hold, to pause the device without
deselecting the device
Write Protection
+ 3.3V Power Supply
Ground
8
7
6
5
CS#
SO
WP#
GND
1
2
3
4
8
7
6
5
VCC
HOLD#
SCLK
SI
*8-LAND SON (6x5mm), WSON (6x5mm), USON (4x4mm)
CS#
SO
WP#
GND
1
2
3
4
8
7
6
5
VCC
HOLD#
SCLK
SI
Note: 8-land SON is not recommended for new design
P/N: PM1231
CS#
SO
WP#
GND
1
2
3
4
2
REV. 1.8, JUL. 17, 2008
MX25L4005A
BLOCK DIAGRAM
Address
Generator
X-Decoder
Memory Array
Page Buffer
Data
Register
Y-Decoder
SRAM
Buffer
Sense
Amplifier
HV
Generator
SI
CS#
Mode
Logic
State
Machine
Output
Buffer
SO
SCLK
Clock Generator
P/N: PM1231
3
REV. 1.8, JUL. 17, 2008
MX25L4005A
DATA PROTECTION
The MX25L4005A are designed to offer protection against accidental erasure or programming caused by spurious system
level signals that may exist during power transition. During power up the device automatically resets the state machine
in the Read mode. In addition, with its control register architecture, alteration of the memory contents only occurs after
successful completion of specific command sequences. The device also incorporates several features to prevent
inadvertent write cycles resulting from VCC power-up and power-down transition or system noise.
•
Power-on reset and tPUW: to avoid sudden power switch by system power supply transition, the power-on reset and
tPUW (internal timer) may protect the Flash.
• Valid command length checking: The command length will be checked whether it is at byte base and completed on byte
boundary.
• Write Enable (WREN) command: WREN command is required to set the Write Enable Latch bit (WEL) before other
command to change data. The WEL bit will return to reset stage under following situation:
- Power-up
- Write Disable (WRDI) command completion
- Write Status Register (WRSR) command completion
- Page Program (PP) command completion
- Sector Erase (SE) command completion
- Block Erase (BE) command completion
- Chip Erase (CE) command completion
•
•
•
Software Protection Mode (SPM): by using BP0-BP2 bits to set the part of Flash protected from data change.
Hardware Protection Mode (HPM): by using WP# going low to protect the BP0-BP2 bits and SRWD bit from data change.
Deep Power Down Mode: By entering deep power down mode, the flash device also is under protected from writing
all commands except Release from deep power down mode command (RDP) and Read Electronic Signature command
(RES).
P/N: PM1231
4
REV. 1.8, JUL. 17, 2008
MX25L4005A
Table 1. Protected Area Sizes
Status bit
BP2
BP1
BP0
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
Protect level
0 (none)
1 (1 block)
2 (2 blocks)
3 (4 blocks)
4 (8 blocks)
5 (All)
6 (All)
7 (All)
4Mb
None
Block 7
Block 6-7
Block 4-7
All
All
All
All
P/N: PM1231
5
REV. 1.8, JUL. 17, 2008
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