M28W320FSU

SUPPLY VOLTAGE
     V_DD = 2.7V to 3.6V Core Power Supply
    V_DDQ= 2.7V to 3.6V for Input/Output
    V_PP = 12V for fast Program (optional)
ACCESS TIME: 70ns
PROGRAMMING TIME:
    10s typical
    Double Word Programming Option
    Quadruple Word Programming Option
COMMON FLASH INTERFACE
UNIFORM BLOCKS
64-KWord UNIFORM MEMORY BLOCKS
    M28W320FSU: 32 Blocks
    M28W640FSU: 64 Blocks
HARDWARE PROTECTION
   VPP Pin for Write protect of All Blocks
SECURITY FEATURES
   128 bit User-programmable OTP segment
   64 bit Unique Device Identifier
    KRYPTO Features: Modify Protection, Read Protection, Device Authentication
AUTOMATIC STAND-BY MODE
PROGRAM and ERASE SUSPEND
100,000 PROGRAM/ERASE CYCLES per BLOCK
ELECTRONIC SIGNATURE
   Manufacturer Code: 20h
    Device Codes: M28W320FSU: 880Ch, M28W640FSU: 8857h
PACKAGE
    Compliant with Lead-Free Soldering Processes
    Lead-Free Version

The M28W320FSU and the M28W640FSU are 32 Mbit (2Mbit x 16) and 64 Mbit (4Mbit x 16) Secure Flash memories. The devices can be erased electrically at block level and programmed in-system on a Word-by-Word basis using a 2.7V to 3.6V V_DD supply for the circuitry and a 2.7V to 3.6V V_DDQ supply for the Input/Output pins. An optional 12V V_PP power supply is provided to speed up customer programming.

The M28W320FSU and M28W640FSU feature 32 Mbits and 64 Mbits respectively and are divided into thirty-two and sixty-four 64-KWord Uniform blocks, respectively. Refer to Figure 5. for a detailed description of the devices memory architecture and map.

All devices M28W320FSU are equipped with hardware and software block protection features to avoid unwanted program/erase (modify) or read of the Flash memory content:
Hardware Protection:
When VPP VPPLK all blocks are protected against program or erase.
Software Protection thanks to KRYPTO Security Features:
Modify Protection: volatile and nonvolatile.
Read Protection.

The KRYPTO Security features M28W320FSU are described in a dedicated Application Note. Please contact STMicroelectronics for further details. Two registers are available for protection purpose:
The Protection Register
The KRYPTO Protection Register.

The Protection Register M28W320FSU is a 192 bit Protection Register to increase the protection of a system design. The Protection Register is divided into a 64 bit segment and a 128 bit segment. The 64 bit segment contains a unique device number written by ST, while the second one is one-time-programmable by the user. The user programmable segment can be permanently protected. Figure 6., shows the Protection Register Memory Map.

The KRYPTO Protection Register M28W320FSU is used to manage the Modify and Read protection modes. It also features a Device Authentication mechanism. The KRYPTO Protection Register is described in a dedicated Application Note. Please contact STMicroelectronics for further details.

Each block can be erased separately. Erase can be suspended in order to perform either read or program in any other block and then resumed. Program can be suspended to read data in any other block and then resumed. Each block can be programmed and erased over 100,000 cycles.

Program and Erase commands M28W320FSU are written to the Command Interface of the memory. An on-chip Program/Erase Controller takes care of the timings necessary for program and erase operations. The end of a program or erase operation can be detected and any error conditions identified. The command set required to control the memory is consistent with JEDEC standards.

All the devices M28W320FSU are offered in a TBGA64 (10 x 13mm) package. In addition to the standard version, the package is also available in Lead-free version, in compliance with JEDEC Std J-STD- 020B, the ST ECOPACK 7191395 Specification, and the RoHS (Restriction of Hazardous Substances) directive. The package is compliant with Lead-free soldering processes.

All devices M28W320FSU are supplied with all the bits erased (set to '1').