28F400BX-T B 28F004BX-T B
1 4 Pinouts
The 28F400BX 44-Lead PSOP pinout follows the in-
dustry standard ROM EPROM pinout as shown in
Figure 3 Furthermore the 28F400BX 56-Lead
TSOP pinout shown in Figure 4 provides density up-
grades to future higher density boot block memories
The 28F004BX 40-Lead TSOP pinout shown in Fig-
ure 5 is 100% compatible and provides a density
upgrade for the 2-Mbit Boot Block flash memory or
the 28F002BX
Figure 3 PSOP Lead Configuration for x8 x16 28F400BX
290451 – 25
7