RC28F128M29EWLA NUMONYX, RC28F128M29EWLA Datasheet - Page 47

• Manufacturer Part Number: RC28F128M29EWLA
• Description: IC FLASH 128MBIT 25NS 64BGA
• Manufacturer: NUMONYX
• Series: Axcell™r

Specifications of RC28F128M29EWLA

• Format - Memory: FLASH
• Memory Type: FLASH
• Memory Size: 128M (16Mx8, 8Mx16)
• Speed: 60ns
• Interface: Parallel
• Voltage - Supply: 2.7 V ~ 3.6 V
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-BGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Numonyx
6.3
6.3.1
6.3.2
®
Axcell™ M29EW
Protection commands
Blocks can be protected individually against accidental program, erase or read operations.
The device block protection scheme is shown in
either
summary of the Block Protection commands.
Block protection commands are available both in 8-bit and 16-bit configuration.
The protections of both memory blocks and Extended Memory Block protection are
configured through the Lock register (see
Enter Extended Memory Block command
The M29EW has one extra 128-word Extended Memory Block that can only be accessed
using the Enter Extended Memory Block command.
Three Bus Write cycles are required to issue the Enter Extended Memory Block command.
Once the command has been issued the device enters the Extended Memory Block mode
where all Bus Read or Program operations are conducted on the Extended Memory Block.
Once the device is in the Extended Memory Block mode, the Extended Memory Block is
addressed by using the addresses occupied by block 0 in the other operating modes (see
Figure 8: 64-Mbit and 32-Mbit Boot Block addresses on page
The device remains in Extended Memory Block mode until the Exit Extended Memory Block
command is issued or power is removed from the device. After a power-up sequence or
hardware reset, the device will revert to reading from memory blocks in the main array.
The Extended Memory Block cannot be erased, and each bit of the Extended Memory Block
can only be programmed once.
In Extended Memory Block mode, Erase, Chip Erase, Erase Suspend and Erase Resume
commands are not allowed.
To exit from the Extended Memory Block mode the Exit Extended Memory Block command
must be issued.
The Extended Memory Block is protected from further modification by programming Lock
Register bit 0 (see
undone.
Exit Extended Memory Block command
The Exit Extended Memory Block command is used to exit from the Extended Memory
Block mode and return the device to Read mode. Four Bus Write operations are required to
issue the command.
Table
13, or
Table
Section 7.1: Lock
14, depending on the configuration that is being used, for a
208031-04
Register). Once invoked, this protection cannot be
Section 7.1: Lock
Figure 9: Software protection
Register).
14).
Command Interface
scheme. See
47