RC28F128M29EWLA NUMONYX, RC28F128M29EWLA Datasheet - Page 48

• 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

Command Interface
6.3.3
6.3.4
48
Lock Register command set
The M29EW offers a set of commands to access the Lock Register and to configure and
verify its content. See the following sections in conjunction with
Table 13
Enter Lock Register Command Set command
Three Bus Write cycles are required to issue the Enter Lock Register Command Set
command. Once the command has been issued, all Bus Read or Program operations are
issued to the Lock Register.
Lock Register Program and Lock Register Read command
The Lock Register Program command allows to configure the Lock Register. The
programmed data can then be checked by issuing a Lock Register Read command.
An Exit Protection Command Set command must then be issued to return the device to
Read mode (see
Password Protection mode command set
Enter Password Protection Command Set command
Three Bus Write cycles are required to issue the Enter Password Protection Command Set
command. Once the command has been issued, the commands related to the Password
Protection mode can be issued to the device.
Password Program command
The Password Program command is used to program the 64-bit password used in the
Password Protection mode.
To program the 64-bit password, the complete command sequence must be entered eight
times at eight consecutive addresses selected by A1-A0 plus DQ15/A-1 in 8-bit mode, or
four times at four consecutive addresses selected by A1-A0 in 16-bit mode.
The password can be checked by issuing a Password Read command.
Once Password Program operation has completed, an Exit Protection Command Set
command must be issued to return the device to Read mode. The Password Protection
mode can then be selected.
By default, all Password bits are set to ‘1’.
Password Read command
The Password Read command is used to verify the Password used in Password Protection
mode.
To verify the 64-bit password, the complete command sequence must be entered eight
times at eight consecutive addresses selected by A1-A0 plus DQ15/A-1 in 8-bit mode, or
four times at four consecutive addresses selected by A1-A0 in 16-bit mode.
If the Password Mode Lock bit is programmed and the user attempts to read the password,
the device will output FFh onto the I/O data bus.
An Exit Protection Command Set command must be issued to return the device to Read
mode.
and
Table
Section 6.3.8: Exit Protection command
14.
208031-04
set).
Numonyx
Section 7.1: Lock
®
Axcell™ M29EW
Register,