RC28F128M29EWLA NUMONYX, RC28F128M29EWLA Datasheet - Page 25

• 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
4
5
®
Axcell™ M29EW
Hardware Protection
The M29EW features a V
blocks. Refer to
Software Protection
The M29EW has four different software protection modes:
On first use all parts default to operate in non-volatile Protection mode and the customer is
free to activate the non-volatile or the password protection mode.
The desired protection mode is activated by setting either the one-time programmable Non-
Volatile Protection Mode Lock bit, or the Password Protection Mode Lock bit of the Lock
Register (see
Lock bit or the Password Protection Mode Lock bit, to ‘0’ will permanently activate the Non-
volatile or the Password Protection mode, respectively. These two bits are one-time
programmable and non-volatile: once the protection mode has been programmed, it cannot
be changed and the device will permanently operate in the selected protection mode. It is
recommended to activate the desired software protection mode when first programming the
device.
The Non-volatile and Password Protection modes both provide non-volatile Protection.
Volatilely protected blocks and non-volatilely protected blocks can co-exist within the
memory array. However, the volatile Protection only control the protection scheme for blocks
that are not protected using the non-volatile or password protection.
If the user attempts to program or erase a protected block, the device ignores the command
and returns to read mode.
The device is shipped with all blocks unprotected. The block protection status can be read
either by performing a read electronic signature (see
Auto Select command (see
For the lowest and highest blocks, an even higher level of block protection can be achieved
by locking the blocks using the non-volatile Protection and then by holding the V
Low.
Password Access is a security enhancement offered on the M29EW device. This feature
protects information stored in the main-array blocks by preventing content alteration or
reads until a valid 64-bit password is received. Password Access may be combined with
Non-Volatile and/or Volatile Protection to create a multi-tiered solution.
Please contact your Numonyx Sales representative for further details concerning Password
Access feature.
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–
Volatile Protection
Non-Volatile Protection
Password Protection
Password Access
Section 7.1: Lock
Section 2: Signal Descriptions
PP
/WP# pin that protects the highest, lowest, top two or bottom two
Table 16: Block Protection
Register). Programming the Non-Volatile Protection Mode
208031-04
for a detailed description of the signal.
Table 5
Status).
and
Table
Hardware Protection
6) or by issuing an
PP
/WP# pin
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