
UM014108-0810 Schematic Dia
rams
e
eve
opmen
User Manual
66
eZ80190 Module
Figures 21 through 28 present the schematics of the eZ80190 Module.
Figure 21. eZ80190 Module Schematic Diagram, #1 of 8—CPU
-CS0 --> FLASH
-CS1 --> RAM
-CS2 --> ext. IO
-CS3 --> ETH
=
don’t
stuff
place caps close
to pins 97, 8, 38, 48
don’t
stuff
PA[0..7]
D[0..7]
PC[0..7]
PB[0..7]
A[0..23]
D[0..7]
A[0..23]
PB[0..7]
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PD0
PD1
PD2
PD3
PC7
PC6
PC5
PC4
PC3
PC2
PC1
PC0
PB5
PB4
PB3
PB2
PB1
PB0
-CS0
-CS1
-CS2
-CS3
ZDA
ZCL
-BUSREQ
-RESET
PD6
PD7
PD4
PB7
PB6
-WR
-RD
-WR
-RD
ZDA
ZCL
-RESET
-SLEEP
-ACTIVE
CLK_OUT
CLK_OUT
A19
A20
A21
A22
A23
-CS[0..3]
-NMI
-IOREQ
-INSTRD
-HALT
-IOREQ
-INSTRD
-HALT
-MREQ
-BUSACK
PD5
XIN
PD[0..7]
PC[0..7]
PD[0..7]
-NMI
IICSD
A
IICSCL
-BUSREQ
-BUSACK
-MREQ
PD7
PD6
PD4ETHIRQ
PA7
PA6
PC1
PC0
PA[0..7]
D[0..7]
A[0..23]
-WR
-RD
ZDA
ZCL
-CS[0..3]
-RESET
-IOREQ
-INSTRD
-HALT
PB[0..7]
PC[0..7]
PD[0..7]
-NMI
ETHIRQ
-ACTIVE
-SLEEP
-BUSACK
-BUSREQ
-MREQ
CLK_OUT
IICSDA
IICSCL
PA[0..7]
C18
1nF
0603
C19
1nF
0603
C20
1nF
0603
U1
eZ80190
TQFP100
83
74
82
40
81
73
80
26
84
85
86
87
88
96
79
95
72
94
78
93
75
97
98
99
100
92
77
91
4
90
76
89
715
70
41
27
69
42
68
6
67
1
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
30
43
7
44
31
2
32
45
33
3
28
34
29
46
35
8
36
47
37
9
10
38
11
39
12
13
14
48
49
15
50
16
17
18
19
20
21
22
23
24
25
PD7/RI0
PC7/RI1
PD6/DCD0
D0
PD5/DSR0
PC6/DCD1
PD4/DTR0
A14
VDD
VSS
XTAL
EXTAL
BUSACK
PA7
PD3/SS0/CTS0
PA6
PC5/DSR1
PA5
PD2/SCK0/RTS0
PA4
TEST
VDD
VSS
BUSREQ
PHI
PA3
PD1/SDA0/MOSI0/RxD0
PA2
CS0
PA1
PD0/SCL0/MISO0/TxD0
PA0
PC4/DTR1CS1
PC3/SS1/CTS1
D1
A15
PC2/SCK1/RTS1
D2
PC1/SDA1/MOSI1/RxD1
CS2
PC0/SCL1/MISO1/TxD1
MREQ
HALT
INSTRD
IORQ
RESET
ZCL
ZDA
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
VDD
VSS
A16
D3
CS3
D4
A17
WR
A18
D5
A19
RD
VDD
A20
VSS
D6
A21
VDD
A22
D7
A23
VSS
A0
VDD
A1
VSS
A2
A3
A4
VDD
VSS
A5
NMI
A6
A7
VDD
VSS
A8
A9
A10
A11
A12
A13
R4
1k
0603
R32
0R
0603
R33
0R
0603
R31
0R
0603
R30
0R
0603
R14
0R
0603
X1
50.000MHz, 3.3V
SG-710
13
OEOUT
R13
4k7
0603
R15
0R
0603
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