
UM017010-0112 Schematics
eZ80F91 Modular Development Kit
User Manual
30
Schematics
Figures 8 and 9 show schematic diagrams of the eZ80Acclaim! MDS Adapter Board. In these diagrams, Flash memory chip U2 is not installed;
it is shown for reference only. When U2 is installed, it is accessed using CS3.
Figure 8. eZ80Acclaim! MDS B Schematic Diagram, #1 of 2
GPRS MODEM
CONNECTOR
S
ZDI
INTERFACE
24
26
connector
2
connector
1
MINI MODULE CONNECT
ORS
RESET
JTAG
INTERFACE
TEST
TEST
DIS IRD
A
96C0945-001
A
eZ80 Acclaim! Pl
atform
ZiLOG, Inc.
532 Race Street
San Jose, CA 95126
B
Title
Si
ze
Document Number
Rev
PC2_RTS1 PC2
PC0_TX
D1
PC0
VCC_33V
TDI
PC7_RI1
PC7
PC1_RXD1
PC1
PRSTn
PC3_CTS1 PC3
TDO
TM
S
GND
PC5_DSR1
PC5
PC4_DTR1
PC4
TCK
PC6_DCD1
PC6
PRSTn
TDI
TCK
GND
VCC_33V
GND
GND
-RD
GND
PC7
PD2
PB7
IICSCL
PB3
PD6
-HALT_SLP
-CS1
-WR
PA1
PC3
PD5
-FLASHWE
VCC_33V
A3
A1
D4
GND
D1
A20
-NMI
PB4
-CS3
GND
A23
-MREQ
A10
-TRSTN
PB2
PC5
PA6
PB1
VCC_33V
D3
A12
-BUSREQ
-F91_WE
-BUSACK
A4
A14
TCK
GND
PB0
PC0
D7
A19
A8
-IOREQ
D5
-DIS_FLASH
PB6
PA4
PC1
PB5
A15
VCC_33V
RTC_VDD
GND
PD3
-CS0
GND
PA7
A0
A17
-DIS_IRDA
PC2
-RST
D0
EZ80CLK
PA2
A18
VCC_33V
IICSDA
D6
PA5
TRIGOUT
TDO
A11
VCC_33V
D2
A7
PD4
A21
-INSTRD
PD0
PD7
A6
PA0
TDI
PC4
A5
A2
PD1
A9
A13
GND
-WAIT
A22
PA3
-CS2
GND
VCC_33V
GND
A16
PC6
TM
S
GND
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
A20
-RST
-RD
FLASH_EN
-WR
GND
F_D0
F_D1
F_D2
F_D3
F_D4
F_D5
F_D6
F_D7
VCC_33V
VCC_33V
GND
VCC_33V
GND
TVCC_RESETn
-RST
PB3
PB5
GND
GND
D2
D7
F_D0
GND
D6
F_D1
-CS3
VCC_33V
VCC_33V
GND
VCC_33V
F_D2
F_D5
VCC_33V
GND
D1
F_D3
GND
D0
GND
D4
GND
VCC_33V
F_D7
F_D4
GND
D3
D5
F_D6
FLASH_EN
VCC_33V
GND
-DIS_IRDA
A21
D1
D3
A21
A3
PA5
GND
GND
PB5
PC7
TRIGOUT
GND
PD1
VCC_33V
PC6
D6
GND
-RST
PD4
A17
A16
PD0
-WR
D4
PC3
A13
PA0
VCC_33V
PB1
A11
PA7
GND
VCC_SRAM
VCC_33V
-RD
A4
GND
A8
PA1
A7
GND
-CS3
-F91_WE
PC2
-WAIT
TCK
GND
GND
VCC_33V
PB6
-TRSTN
A20
A15
A0
VCC_33V
PD2
TDO
D0
IICSCL
GND
GND
A18
GND
A6
A10
PB7
PB3
PD5
-CS2
IICSDA
-DIS_IRDA
-CS0
A1
VCC_33V
A22
A14
GND
PA3
A5
A12
GND
GND
PC0
PB4
GND
PC1
PD6
PA2
PD7
A9
VCC_SRAM
D5
PD3
VCC_33V
GND
-HALT_SLP
PC4
EZ80CLK
TM
S
A2
RTC_VDD
PA4
D2
D7
PB2
A19
PB0
PC5
GND
PA6
TDI
-NMI
A23
VCC_SRAM
VCC_CUST
VCC_SRAM
-RST
VCC_5V
PB6
PD2PD3
PD0PD1
GND
J3
HEADER 32
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
R3
330
J1
HEADER 28x2
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
C2
0.001uF
J12
HEADER 2
1
2
J2
HEADER 28x2
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
J11
HEADER 9
1
2
P1
12
34
56
78
9
10
11 12
13 14
C3
0.1uF
J5
Header 3x2
12
34
56
S2
1 2
R8
1K
U3A
TC74LVT
125
23
14
1
7
J10
HEADER 1
1
D1
LED YEL
21
R5
10K
R7
10K
J4
HEADER 2
1
2
R4
10K
U1
74CBTLV3384/SO
1
1213
24
2
5
6
9
10
16
15
19
20
23
3
4
7
8
11
14
17
18
21
22
1OE
GND
2OE
VCC
1B1
1B2
1B3
1B4
1B5
2B2
2B1
2B3
2B4
2B5
1A1
1A2
1A3
1A4
1A5
2A1
2A2
2A3
2A4
2A5
1N5817
CR1
21
R2
220
R1
10K
J6
HEADER 2
1
2
J9
HEADER 2
1
2
C1
0.001uF
U4A
TC74LVC08
1
2
3
147
R14
0
JP2
HEADER 30x2/SM
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
U2
Am29LV160D
25
24
23
22
21
20
19
18
8
7
6
5
4
3
2
1
48
17
16
9
12
15
28
26
11
29
31
33
35
38
40
42
44
30
32
34
36
39
41
43
45
10
13
14
37
27
46
47
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
RESET
RY/BY
OE
CE
WE
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15/A-1
NC
NC
VPP
VCC
GND
GND
BYTE
S1
SW PUSHBUTTON
1 2
VL1
R6
10K
R15
0
JP1
HEADER 30x2/SM
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
37
39
41
43
45
47
49
51
53
55
57
59
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