RC28F128M29EWLA NUMONYX, RC28F128M29EWLA Datasheet - Page 49

• 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
6.3.5
®
Axcell™ M29EW
Password Unlock command
The Password Unlock command is used to clear the NVPB Lock bit allowing to modify the
NVPBs.
The Password Unlock command must be issued along with the correct password.
There must be a 1 µs delay between successive Password Unlock commands in order to
prevent hackers from cracking the password by trying all possible 64-bit combinations. If
this delay is not respected, the latest command will be ignored.
Approximately 1 µs is required for unlocking the device after the valid 64-bit password has
been provided.
Non-Volatile Protection mode command set
Enter Non-Volatile Protection Command Set command
Three Bus Write cycles are required to issue the Enter Non-Volatile Protection Command
Set command. Once the command has been issued, the commands related to the Non-
Volatile Protection mode can be issued to the device.
Non-Volatile Protection Bit Program command (NVPB Program)
A block can be protected from program or erase by issuing a Non-Volatile Protection Bit
command along with the block address. This command sets the NVPB to ‘1’ for a given
block.
Read Non-Volatile Protection Bit Status command (Read NVPB Status)
The status of a NVPB for a given block or group of blocks can be read by issuing a Read
Non-Volatile Modify Protection Bit command along with the block address.
Clear all Non-Volatile Protection Bits command (Clear all NVPBs)
The NVPBs are erased simultaneously by issuing a Clear all Non-Volatile Protection Bits
command. No specific block address is required. If the NVPB Lock bit is set to ‘0’, the
command fails.
208031-04
Command Interface
49