M29W116BB

SINGLE 2.7 to 3.6V SUPPLY VOLTAGE for PROGRAM, ERASE and READ OPERATIONS
ACCESS TIME: 70ns
PROGRAMMING TIME
10s by Byte typical
35 MEMORY BLOCKS
1 Boot Block (Top or Bottom Location)
2 Parameter and 32 Main Blocks
PROGRAM/ERASE CONTROLLER
Embedded Byte Program algorithm
Embedded Multi-Block/Chip Erase algorithm
Status Register Polling and Toggle Bits
Ready/Busy Output Pin
ERASE SUSPEND and RESUME MODES
Read and Program another Block during Erase Suspend
TEMPORARY BLOCK UNPROTECTION MODE
SECURITY MEMORY BLOCK
UNLOCK BYPASS PROGRAM COMMAND
Faster Production/Batch Programming
LOW POWER CONSUMPTION
Standby and Automatic Standby
100,000 PROGRAM/ERASE CYCLES per BLOCK
20 YEARS DATA RETENTION
Defectivity below 1 ppm/year
ELECTRONIC SIGNATURE
Manufacturer Code: 20h
M29W116BT Device Code: C7h
M29W116BB Device Code: 4Ch

Note: 1. Except for the rating "Operating Temperature Range", stresses above those listed in the Table "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents.
           2. Minimum Voltage may undershoot to 2V during transition and for less than 20ns during transitions.

The M29W116BB is a 16Mbit (2Mb x8) non-volatile memory that can be read, erased and reprogrammed. These operations can be performed using a single low voltage (2.7 to 3.6V) supply. On power-up the memory defaults to its Read mode where it can be read in the same way as a ROM or EPROM.

The memory M29W116BB is divided into blocks that can be erased independently so it is possible to preserve valid data while old data is erased. Each block can be protected independently to prevent accidental Program or Erase commands from modifying the memory. Program and Erase commands are written to the Command Interface of the memory. An on-chip Program/Erase Controller simplifies the process of programming or erasing the memory by taking care of all of the special operations that are required to update the memory contents. 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.

The blocks in the memory M29W116BB are asymmetrically arranged, see Tables 3A and 3B, Block Addresses. The first or last 64 Kbytes have been divided into four additional blocks. The 16 Kbyte Boot Block can be used for small initialization code to start the microprocessor, the two 8 Kbyte Parameter Blocks can be used for parameter storage and the remaining 32 Kbyte is a small Main Block where the application may be stored.

Chip Enable M29W116BB, Output Enable and Write Enable signals control the bus operation of the memory. They allow simple connection to most microprocessors, often without additional logic.

The memory M29W116BB is offered in a TSOP40 (10 x 20mm) package. Access times of 70ns, 90ns and 120ns are available. The memory is supplied with all the bits erased (set to '1').