M29W400BT, M29W400BB

18/22

Table 18. Ordering Information Scheme

Note: The last two characters of the ordering code may be replaced by a letter code for preprogrammed

parts, otherwise devices are shipped from the factory with the memory content bits erased to ’1’.

For a list of available options (Speed, Package, etc...) or for further information on any aspect of this de-

vice, please contact the ST Sales Office nearest to you.

Example:

M29W400BB

55

N

1

T

Device Type

M29

Operating Voltage

Device Function

400B = 4 Mbit (512Kb x8 or 256Kb x16), Boot Block

Array Matrix

T = Top Boot

B = Bottom Boot

Speed

55 = 55 ns

70 = 70 ns

90 = 90 ns

120 = 120 ns

Package

N = TSOP48: 12 x 20 mm

M = SO44

Temperature Range

1= 0to 70

°C

6= –40 to 85

°C

Optio n

T = Tape & Reel Packing