Zilog EZ80F91 - Manual (Page 69)

UM014220-0508 Schematic Diagrams
eZ80F91 Development Kit
User Manual
64
Figure 25. eZ80F91 Module Schematic Diagram, #3 of 3—Module Memory
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
D7 D0
A4
A2 A14
A12
A3
D1 D6
A5
A11
-CS1
D5 D2
A6
A18
A7
A10
A0
A17
A13
A16
A9
D3
-RD
A15
-WR
A8
A1
D4
-WP
VCC
-FLASH_EN
-FLASHWE
-CSFLASH
-CS0
A20
A11
DFLASH3
A1
DFLASH0
D6
-RESET
A17
A13
A9
D3
D2
A16
A10
DFLASH4
D1
-WR
A12
A2
D5
GND
-RESET
-WR
A4
A0
-RD
A[0..23] A[0..23]
A21 A18
A8
DFLASH1
D7
A3
A14
A7
-CS0
A15
-RD
D4
-WP
DFLASH7
A5 DFLASH5
D0
A19
A6 DFLASH6
DFLASH2
-DIS_FLASH
-CS1
-CSFLASH
D[0:7]
A[0:23]
-RD
-WR
-CS0
-DIS_FLASH
-RESET
-FLASHWE
-CS1
GND
VCC
VCC VCC
VCC
VCC
VCC
VCC
VCC VCC
VCC
Title
Size Document Number Rev
Date: Sheet of
96C0879-001 D
eZ80F91 Ethernet Module.
ZiLOG, Inc.
532 Race Street. San Jose,CA 95126. 408.558.8500
B
3 3 Wednesday, August 01, 2007
Title
Size Document Number Rev
Date: Sheet of
96C0879-001 D
eZ80F91 Ethernet Module.
ZiLOG, Inc.
532 Race Street. San Jose,CA 95126. 408.558.8500
B
3 3 Wednesday, August 01, 2007
Title
Size Document Number Rev
Date: Sheet of
96C0879-001 D
eZ80F91 Ethernet Module.
ZiLOG, Inc.
532 Race Street. San Jose,CA 95126. 408.558.8500
B
3 3 Wednesday, August 01, 2007
Memory
This schematic reflects the
assembly rev B of the module.
The FLASH memory on page 3
was changed to Am29LV008B for
Rev D schematic.
U1E
74LCX04
TSSOP14
U1E
74LCX04
TSSOP14
11 10
R29
10K R29
10K
U1D
74LCX04
TSSOP14
U1D
74LCX04
TSSOP14
9 8
U8
512kx8 SRAM
SOJ36.400
U8
512kx8 SRAM
SOJ36.400
OE
31
A18 35
CE
6
A17
34
A4 5
A16 33
I/O0 7
A15 32
A3 4
A2
3
A14 24
A1 2
I/O4 25
A13
23
I/O5 26
N.C. 36
I/O6 29
I/O7 30
A0 1
A12 22
VSS 28
WE 13
VDD 27
A11 21
I/O1 8
I/O2 11
I/O3 12
A9
18
A8 17
VSS 10
N.C.
19
A10 20
A7 16
A6 15
A5
14
VDD 9
U10
SN74CBTLV3861
U10
SN74CBTLV3861
A1 2
A2
3
A3 4
A4 5
A5 6
A6
7
A7 8
A8 9
A9 10
A10 11
B1 22
B2
21
B3 20
B4 19
B5 18
B6
17
B7 16
B8 15
B9 14
B10 13
NC 1
VCC 24
GND 12
OE 23
R30
10K R30
10K
C14
0.001uF C14
0.001uF
U11
Am29LV008B
U11
Am29LV008B
A0 21
A1
20
A2 19
A3 18
A4 17
A5
16
A6 15
A7 14
A8 8
A9 7
A10 36
A11 6
A12 5
A13 4
A14 3
A15 2
A16
1
A17 40
A18 13
A19 37
RESET 10
RY/BY 12
OE 24
WE 9
CE 22
DQ0 25
DQ1
26
DQ2 27
DQ3 28
DQ4 32
DQ5
33
DQ6 34
DQ7 35
NC1
11
NC2 38
VCC1
30
VCC2
31
NC3 29
GND1
23
GND2
39
C13
0.001uF C13
0.001uF
U4C
74LCX32
TSSOP14
U4C
74LCX32
TSSOP14
9
10
8