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PDF 25L512MC Data sheet ( Hoja de datos )
| Número de pieza | 25L512MC | |
| Descripción | MX25L512MC | |
| Fabricantes | Macronix | |
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MX25L512
512K-BIT [x 1] CMOS SERIAL FLASH
FEATURES
GENERAL
• Serial Peripheral Interface (SPI) compatible -- Mode 0 and Mode 3
• 524,288 x 1 bit structure
• 16 Equal Sectors with 4K byte each
- Any Sector 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
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.)/chip(512Kb)
• 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
SOFTWARE FEATURES
• Input Data Format
- 1-byte Command code
• Block Lock protection
- The BP0~BP1 status bit defines the size of the area to be software protected against Program and Erase in-
structions.
• 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
P/N: PM1214
REV. 1.6, FEB. 17, 2009
1
Free Datasheet http://www.datasheet4u.com/
1 page  
MX25L512
DATA PROTECTION
MX25L512 is 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 ma-
chine in the standby 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.
• 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-BP1 bits to set the part of Flash protected from data change.
• Hardware Protection Mode (HPM): by using WP# going low to protect the BP0-BP1 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 Sig-
nature command (RES).
P/N: PM1214
REV. 1.6, FEB. 17, 2009
5
Free Datasheet http://www.datasheet4u.com/
5 Page 
MX25L512
(5) Write Status Register (WRSR)
The WRSR instruction is for changing the values of Status Register Bits. Before sending WRSR instruction, the
Write Enable (WREN) instruction must be decoded and executed to set the Write Enable Latch (WEL) bit in ad-
vance. The WRSR instruction can change the value of Block Protect (BP1, BP0) bits to define the protected area
of memory (as shown in table 1). The WRSR also can set or reset the Status Register Write Disable (SRWD) bit in
accordance with Write Protection (WP#) pin signal. The WRSR instruction cannot be executed once the Hardware
Protected Mode (HPM) is entered.
The sequence of issuing WRSR instruction is: CS# goes low-> sending WRSR instruction code-> Status Register
data on SI-> CS# goes high. (see Figure 15)
The WRSR instruction has no effect on b6, b5, b4, b1, b0 of the status register.
The CS# must go high exactly at the byte boundary; otherwise, the instruction will be rejected and not executed.
The self-timed Write Status Register cycle time (tW) is initiated as soon as Chip Select (CS#) goes high. The Write
in Progress (WIP) bit still can be check out during the Write Status Register cycle is in progress. The WIP sets 1
during the tW timing, and sets 0 when Write Status Register Cycle is completed, and the Write Enable Latch (WEL)
bit is reset.
Table 4. Protection Modes
Mode
Software protection
mode (SPM)
Status register condition
Status register can be written
in (WEL bit is set to "1") and
the SRWD, BP0-BP1
bits can be changed
Hardware protection
mode (HPM)
The SRWD, BP0-BP1 of
status register bits cannot be
changed
WP# and SRWD bit status
WP#=1 and SRWD bit=0, or
WP#=0 and SRWD bit=0, or
WP#=1 and SRWD=1
WP#=0, SRWD bit=1
Memory
The protected area
cannot
be program or erase.
The protected area
cannot
be program or erase.
Note:
1. As defined by the values in the Block Protect (BP1, BP0) bits of the Status Register, as shown in Table 1.
As the table above showing, the summary of the Software Protected Mode (SPM) and Hardware Protected Mode (HPM).
Software Protected Mode (SPM):
- When SRWD bit=0, no matter WP# is low or high, the WREN instruction may set the WEL bit and can change
the values of SRWD, BP1, BP0. The protected area, which is defined by BP1, BP0, is at software protected
mode (SPM).
- When SRWD bit=1 and WP# is high, the WREN instruction may set the WEL bit can change the values of
SRWD, BP1, BP0. The protected area, which is defined by BP1, BP0, is at software protected mode (SPM)
P/N: PM1214
REV. 1.6, FEB. 17, 2009
11
Free Datasheet http://www.datasheet4u.com/
11 Page | ||
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