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

A[0..23]
D[0..7]
A[0..23]
-CSFLASH
-RD
-WR
-RESFLASH
-FLASHWE
Note: Must be pulled 'low'
externally for programming.
UM013904-0203
Intel-Type
U3
A0
21 25
A0 DQ0
A1
20 26
A1 DQ1
A2
19 27
A2 DQ2
A3
18 28
A3 DQ3
A4
17 32
A4 DQ4
A5
16 33
A5 DQ5
A6
15 34
A6 DQ6
A7
14 35
A7 DQ7
A8
8
A8
A9
7
A9
A10
36 22
A10 CE
A11
6 24
A11 OE
A12
5 9
A12 WE
A13
4 10
A13 RP
A14
3 12
A14 WP
A15
2
A15
A16
1 11
A16 VPP
A17
40
A17
A18
13 29
A18 N.C.
A19
37 38
A19 N.C.
Pin37=N.C.
for 4Mbit- MT28F008B3VG
TSOP40.20MM
Flashes
U3 IS NOT POPULATED
D[0..7]
A[0..23] A22/A23
not used here
-CSFLASH
-RD
-WR
-RESFLASH
-FLASHWE
Figure 25. Schematic Diagram, #4 of 9—NOR Flash Device
D[0..7]
DFLASH0 D0
=
DFLASH1 = D1
DFLASH2 = D2
DFLASH3 D3
=
DFLASH4 = D4
DFLASH5 D5
=
DFLASH6 = D6
DFLASH7 D7
=
-CSFLASH
-RD
-WR
-RESFLASH
-WP
2
0R
VPP
R2
A21
A20 A20/A21 used for
16/32Mbit-Flash
C8
100nF
PRELIMINARY
eZ80F92 Development Kit
VDD
R1
10K
U2A
-FLASHWE
1
74LVC04/SO
V3.3
VDD
VSS
GND
Schematic Diagrams
User Manual
67