TB28F400BVT80 Intel, TB28F400BVT80 Datasheet - Page 8

• Manufacturer Part Number: TB28F400BVT80
• Manufacturer: Intel

Specifications of TB28F400BVT80

• Density: 4Mb
• Access Time (max): 80ns
• Interface Type: Parallel
• Boot Type: Top
• Address Bus: 19/18Bit
• Operating Supply Voltage (typ): 3.3/5V
• Operating Temp Range: -40C to 85C
• Package Type: SOP
• Sync/async: Asynchronous
• Operating Temperature Classification: Industrial
• Operating Supply Voltage (min): 3/4.5V
• Operating Supply Voltage (max): 3.6/5.5V
• Word Size: 8/16Bit
• Number Of Words: 512K/256K
• Supply Current: 70mA
• Mounting: Surface Mount
• Pin Count: 44
• Lead Free Status / Rohs Status: Not Compliant

4-MBIT SmartVoltage BOOT BLOCK FAMILY
NOTE:
A data bus buffer may be needed for processor speeds above 25 MHz.
8
Figure 2. 28F004B Interface to Intel80C188EB 8-Bit Embedded Microprocessor
i386™ EX CPU
(25 MHz)
RESET
80C188EB
Figure 1. 28F400 Interface to Intel386™ EX Microprocessor
AD
RESET
A[16:18]
RESIN#
A[18:1]
D[0:15]
A
UCS#
0
WR#
WR#
8
-AD
P1.X
P1.X
CS#
RD#
RD#
-A
ALE
15
7
SEE NEW DESIGN RECOMMENDATIONS
System Reset
LE
LE
ADDRESS
ADDRESS
LATCHES
LATCHES
V
CC
V
CC
10K
V
WP#
A
DQ
CE#
WE#
OE#
RP#
PP
0
-A
0
-DQ
18
A[0:17]
CE#
OE#
WE#
DQ[0:15]
RP#
28F004-T
28F400BV-60
7
0530_01
0530_02