Zilog EZ80L92 - Manual (Page 73)

UM012913-0407 Schematic Diagrams
eZ80L92 Development Kit
User Manual
69
Figure 25. eZ80L92 Module Schematic Diagram, #4 of 9—Flash Device
Intel-Type
A20/A21 used for
16/32Mbit-Flash
Pin37=N.C.
for 4Mbit-
Flashes
Note: Must be pulled ’low’
externally for programming.
A22/A23
not used here
=
=
=
=
=
=
=
=
A[0..23]
D[0..7]
-CSFLASH
-RD
-WR
-RESFLASH
-CSFLASH
-RD
-WR
VPP
A13
VSS
A14
A19
A4
A0
A3
VDD
A6
A[0..23]
A7
A2
A11
A10
A18
A1
A17
A9
A8
A16
A5
A15
A20
-RESFLASH
A12
-FLASHWE
A21
D4 DFLASH4
D3 DFLASH3
D2 DFLASH2
D1 DFLASH1
D6 DFLASH6
D5 DFLASH5
D7 DFLASH7
D0 DFLASH0
D[0..7]
-WP
VDD
-FLASHWE
V3.3
GND
U2A
74LVC04/SO
1 2
14
U3
MT28F008B3VG
TSOP40.20MM
25 21
26 20
27 19
28 18
32 17
33 16
34 15
35 14
8
7
36
6
5
4
3
2
1
40
13
37
38
22
24
9
10
12
11
29
23 39
30 31
DQ0 A0
DQ1 A1
DQ2 A2
DQ3 A3
DQ4 A4
DQ5 A5
DQ6 A6
DQ7 A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
N.C.
CE
OE
WE
RP
WP
VPP
N.C.
VSS VSS
VDD VDD
R2
0R
C8
100nF
R1
10K
D[0..7]
A[0..23]
-CSFLASH
-RD
-WR
-RESFLASH
-FLASHWE