ZiLOG eZ80F92 User Manual page 72

VDD
U22
28 27
C1+ V+
C14
24 3
C1- V-
C15 0.1
1
C2+
0.1
2
C2-
14 9
PD0_TXD0 T1IN T1OUT
GND
13 10
T2IN T2OUT
12 11
PD2_RTS0 T3IN T3OUT
22
-CON_DIS FORCEOFF
VDD
R14
23 21
FORCEON INVALID
10K
20
R2OUTB
19 4
R1OUT R1IN
18 5
R2OUT R2IN
17 6
PD3_CTS0 R3OUT R3IN
16 7
PD1_RXD0 R4OUT R4IN
15 8
R5OUT R5IN
MAX3245CAI
VDD
U24
28
C1+
C24
24
C1-
C25 0.1
1
C2+
0.1
2
C2-
14
PC0_TXD1 T1IN
13
T2IN
PC4_DTR1
12
PC2_RTS1 T3IN
VDD 22
-MOD_DIS FORCEOFF
R16
23
FORCEON
10K RI1_B
20
R2OUTB
19
PC5_DSR1 R1OUT
RI1_NB
J14 18
R2OUT
RI1_B
1
17
2 R3OUT
PC3_CTS1
RI1_NB
3
16
PC1_RXD1 R4OUT
Header 3
15
PC6_DCD1 R5OUT
904-0203
Downloaded from Elcodis.com electronic components distributor
GND
C13
0.1uF
J10
HEADER 5
C16 C17
0.1uF 0.1uF
RESET
TXD0
SW4
RTS0
P2
1
6
TXD0
2
CTS0
7
GND RXD0
3
RTS0
8
CTS0 4
9
RXD0
5
C21
0.1
27
V+
3
V-
C26
C27
0.1
0.1
9 TXD1
T1OUT
DTR1
10
T2OUT
RTS1
11
T3OUT
21
INVALID
4 DSR1 P3
R1IN
DCD1
1
5 RI1 DSR1 6
R2IN
RXD1 2
CTS1 RTS1
6 7
R3IN
TXD1 3
RXD1 CTS1
7 8
R4IN
DTR1
4
8 DCD1 RI1 9
R5IN
5
DB9 Male
MAX3245CAI
®
Figure 20. eZ80 Development Platform Schematic Diagram, #4 of 5
PRELIMINARY
F1
RXE160
D6
J13
2
S26
3
1
C22
PWR JACK
-RESET
0.1
CONSOLE
J15
DB9 Female
1
2
RS485_1_EN
U26
PD1_RXD0
1 8
RO VCC
2 7
RE B
PD2_RTS0
3 6
DE A
PD0_TXD0
4 5
DI GND
DS1487
U27
PC1_RXD1
1 8
RO VCC
2 7
RE B
PC2_RTS1
3 6
DE A
PC0_TXD1
4 5
DI GND
DS1487
J16
1
2
MODEM
RS485_2_EN
R18
10K
VCC
eZ80F92 Development Kit
9VDC
9VDC
U23
LM7805C/TO220/0.5A
5V VCC
1 3
VCC
IN OUT
C20 + C19
0.1 22/10
C23
+
22uF
U25
3.3V
3 2
VIN VOUT
1
GND
LT1086-3.3/TO220
C29
0.1
-DIS_0
R17
10K
VCC
R23
C32 J17
120
0.1uF
1
2
RT_1
C18
0.1uF
R22
GND
120
J18
1
2
RT_2
Schematic Diagrams
User Manual
62
VDD
VDD
+ C28
R15
22/6.3
680
D7
GREEN
3.3 OK
GND
P4
1
2
3
GND
4
5
6
7
8
con8
-DIS_1