
UM014220-0508 Schematics
eZ80F91 Development Kit
User Manual
60
Figure 21. eZ80F91 Development Platform Schematic Diagram, #4 of 5
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
RESET
3.3 O
K
MODE
M
CONSOL
E
POWER & RS232
96
C0858-001
C
Schematic,
eZ80L92 Evaluation Board
B
44
Friday, October 10, 2003
Title
Siz
e
Document Number
Rev
Date:
Sheet
of
VDD
RXD1
GND
CTS1 RTS1
RTS1
TXD1
RXD0
CTS0
VCC
3.3V
VDD
RI1_B
5V
RI1_NB
CTS1
DTR1
TXD0
VDD
RXD
1
RI1
RXD
0
DCD1
TXD1
DSR1
CTS0
DCD1
DTR1
VDD
RTS0
RI1_NB
RI1_B
RTS0
TXD0
DSR1
RI1
9VDC
GND
GND
GND
VCC
GND
VCC
PC
0_TXD1
PC1_RXD1
PD1_RXD0
PD
0_TXD0
PD2_RTS0
PC2_RTS1
PC
0_TXD1
-MOD_DIS
PD1_RXD0
-RESET
PC2_RTS1
VCC
PC3_CTS1
PD2_RTS0
PD
0_TXD0
PD3_CTS0
VDD
PC7_RI1
PC6_DCD1
PC4_DTR1
PC1_RXD1
-CON_DIS
PC5_DSR1
9VDC
GND
-DIS_0
-DIS_1
VDD
C17
0.1uF
U27
DS1487
1
2
3
4 5
6
7
8
RO
RE
DE
DI
GND
A
B
VCC
C14
0.1
C32
0.1uF
C25
0.1
C21
0.1
C13
0.1uF
D7
GREEN
21
R18
10K
J14
Header 3
1
2
3
SW4
R16
10K
P3
DB9 Male
5
9
4
8
3
7
2
6
1
U25
LT1086-3.3/TO
220
1
3 2
GND
VIN
VOUT
R23
12
0
C20
0.1
U24
MAX324
5CAI
28
24
1
2
14
13
12
22
23
20
19
18
17
16
15
25
8
7
6
5
4
21
11
10
9
3
27
26
C1+
C1-
C2+
C2-
T1IN
T2IN
T3IN
FORCEOFF
FORCEON
R2OUTB
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
GND
R5IN
R4IN
R3IN
R2IN
R1IN
INVALID
T3OUT
T2OUT
T1OUT
V-
V+
VCC
R14
10K
J15
RS485_1_EN
1
2
J17
RT_
1
1
2
C26
0.1
R15
68
0
R22
12
0
+
C23
22uF
P4
con8
1
2
3
4
5
6
7
8
C15
0.1
U26
DS1487
1
2
3
4 5
6
7
8
RO
RE
DE
DI
GND
A
B
VCC
J13
PWR JACK
2
3
1
J16
RS485_2_EN
1
2
J18
RT_
2
1
2
+
C28
22/6.3
C22
0.1
+
C19
22/10
C29
0.1
P2
DB9 Female
5
9
4
8
3
7
2
6
1
F1
RXE16
0
U22
MAX324
5CAI
28
24
1
2
14
13
12
22
23
20
19
18
17
16
15
25
8
7
6
5
4
21
11
10
9
3
27
26
C1+
C1-
C2+
C2-
T1IN
T2IN
T3IN
FORCEOFF
FORCEON
R2OUTB
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
GND
R5IN
R4IN
R3IN
R2IN
R1IN
INVALID
T3OUT
T2OUT
T1OUT
V-
V+
VCC
U23
LM7805C/TO220/0.5A
1 3
2
IN
OUT
GND
C18
0.1uF
D6
S26
J10
HEADER 5
1
2
3
4
5
C16
0.1uF
R17
10K
C27
0.1
C24
0.1
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