Appendix b. schematic diagrams, Appendix b.schematic diagrams, Figure 9 – Zilog EZ80F91AZA User Manual
Page 28: Appendix b. sche, Matic diagrams, Zilog
Appendix B
UM024402-0812
eZ80AcclaimPlus! Development Kit
User Manual
18
Appendix B. Schematic Diagrams
Figures 9 through 12 display schematic diagrams of the eZ80AcclaimPlus! Development Board and its interfaces.
Figure 9. Schematic Diagram #1 of 4: USB and Serial Interfaces
USB PWR
WALL PWR
0.37V drop @1A
Need thermal pad
VCCIO
VCC_5v
VCC_3v3
VCC_3v3
VCC_3v3
TXD1
RTS1-
RXD1
CTS1-
RXD0
TXD0
Title
Zilog
1590 Buckeye Drive
Milpitas, CA 95035
408-513-1500
Website: www.zilog.com
Page
Zilog Confidential All Rights Reserved
eZ80F91 Development Board
USB AND SERIAL INTERFACE
Title
Zilog
1590 Buckeye Drive
Milpitas, CA 95035
408-513-1500
Website: www.zilog.com
Page
Zilog Confidential All Rights Reserved
eZ80F91 Development Board
USB AND SERIAL INTERFACE
Title
Zilog
1590 Buckeye Drive
Milpitas, CA 95035
408-513-1500
Website: www.zilog.com
Page
Zilog Confidential All Rights Reserved
eZ80F91 Development Board
USB AND SERIAL INTERFACE
J12
HDR/PIN 1x3
J12
HDR/PIN 1x3
1
2
3
D2
YELL
D2
YELL
2
1
C38
0.1uF
C38
0.1uF
J14
HDR/PIN 1x1
J14
HDR/PIN 1x1
1
U9
74LVC1G04
U9
74LVC1G04
NC
1
A
2
GND
3
Y
4
VCC
5
C39
0.1uF
C39
0.1uF
C35
0.015uF
C35
0.015uF
J15
HDR/PIN 1x1
J15
HDR/PIN 1x1
1
P2
PJ-007
P2
PJ-007
1
2
3
C37
0.1uF
C37
0.1uF
C33
1uF
C33
1uF
C42
0.1uF
C42
0.1uF
J16
HDR/PIN 1x1
J16
HDR/PIN 1x1
1
R14
20K
R14
20K
R15
4.75K
R15
4.75K
U8
FT232RL
U8
FT232RL
USBDM
16
RTS
3
GND1
7
RI
6
NC1
8
DTR
2
VCCIO
4
3v3 OUT
17
NC
24
RESET
19
TXD
1
USBDP
15
CBUS3
14
OSCI
27
OSCO
28
GND2
18
TEST
26
CBUS1
22
GND3
21
DCD
10
CTS
11
DSR
9
RXD
5
CBUS4
12
CBUS2
13
AG
ND
25
CBUS0
23
VCC
20
P4
DB9 FEM/RT
P4
DB9 FEM/RT
1
6
2
7
3
8
4
9
5
M1
M2
L1
FERRITE BEAD
L1
FERRITE BEAD
D1
PMEG3020
D1
PMEG3020
3
2
1
C41
0.1uF
C41
0.1uF
J17
HDR/PIN 1x1
J17
HDR/PIN 1x1
1
U7
TPS73733DCQ
U7
TPS73733DCQ
OUT
2
IN
1
GND
3
EN
5
NR/FB
4
GND/TAB
6
P3
USB-OTG, mini-AB
P3
USB-OTG, mini-AB
VBUS
1
DM
2
DP
3
ID
4
GND
5
SH1
6
SH2
7
SH3
8
SH4
9
C34
1uF
C34
1uF
R17
100K
R17
100K
U10
MAX3232
U10
MAX3232
C1+
1
C1-
3
C2+
4
C2-
5
T1IN
11
T2IN
10
R1OUT
12
R2OUT
9
VCC
16
V+
2
V-
6
T1OUT
14
T2OUT
7
R1IN
13
R2IN
8
GND
15
R16
1K
R16
1K
C36
0.01uF
C36
0.01uF
J18
HDR/PIN 1x1
J18
HDR/PIN 1x1
1
C40
0.1uF
C40
0.1uF
U6
TPS2051B
U6
TPS2051B
OUT
1
GND
2
OC
3
EN
4
IN
5
J13
HDR/PIN 1x1
J13
HDR/PIN 1x1
1