Figure 25. Schematic Diagram, #4 Of 9-Nor Flash Device - ZiLOG eZ80F92 User Manual

A[0..23]
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
Pin37=N.C.
for 4Mbit-
Flashes
U3 IS NOT POPULATED
D[0..7]
D[0..7]
A[0..23]
A[0..23]
-CSFLASH
-CSFLASH
-RD
-RD
-WR
-WR
-RESFLASH
-RESFLASH
-FLASHWE
-FLASHWE
Note: Must be pulled 'low'
externally for programming.
904-0203
Downloaded from Elcodis.com electronic components distributor
D[0..7]
Intel-Type
U3
DFLASH0
21 25
A0 DQ0
DFLASH1
20 26
A1 DQ1
DFLASH2
19 27
A2 DQ2
DFLASH3
18 28
A3 DQ3
DFLASH4
17 32
A4 DQ4
DFLASH5
16 33
A5 DQ5
DFLASH6
15 34
A6 DQ6
DFLASH7
14 35
A7 DQ7
8
A8
7
A9
-CSFLASH
36 22
A10 CE
-RD
6 24
A11 OE
-WR
5 9
A12 WE
-RESFLASH
4 10
A13 RP
-WP
3 12
A14 WP
2
A15
VPP
1 11
A16 VPP
40
A17
A21
13 29
A18 N.C.
A20
37 38
A19 N.C.
MT28F008B3VG
TSOP40.20MM
A22/A23
not used here
Figure 25. Schematic Diagram, #4 of 9—NOR Flash Device
PRELIMINARY
D0
=
D1
=
D2
=
D3
=
D4
=
= D5
= D6
D7
=
2 1
0R
R2
A20/A21 used for
16/32Mbit-Flash
C8
100nF
eZ80F92 Development Kit
User Manual
VDD
R1
10K
U2A
-FLASHWE
74LVC04/SO
V3.3
VDD
VSS
GND
Schematic Diagrams
67