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eZ80F91 Datasheet(PDF) 27 Page - Zilog, Inc.

Part # eZ80F91
Description  Factory-default operating clock frequency at 50 MHz
PDF  30 Pages
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Manufacturer  ZILOG [Zilog, Inc.]
Direct Link  http://www.zilog.com
Logo ZILOG - Zilog, Inc.

eZ80F91 Datasheet(HTML) 27 Page - Zilog, Inc.

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PS026102-1207
Schematics
Zdots® SBC for eZ80AcclaimPlus!™ Connectivity ASSP
Product Specification
23
Schematics
Figure 8 through Figure 10 displays the layout of the Zdots. Ethernet circuiting devices are not loaded on the Zdots. However, these devices appear
in the following schematics for reference.
Figure 8. Zdots Schematic Diagram—Connectors and Miscellaneous
5
5
4
4
3
3
2
2
1
1
D
D
C
C
B
B
A
A
D3
PD1
-RD
-BUSREQ
-BUSREQ
GND
TDO
D[0..7]
A8
-CS0
-DIS_FLASH
-RESET
A22
-WR
RTC_VDD
-BUSACK
A[0..23]
PD3
-WR
-HALT_SLP
-MREQ
A19
A13
-FLASHWE
A10
D5
-RESET
-WAIT
-WAIT
TDO
GND
PD5
PB1
-NMI
-IOREQ
A5
PD6
-MREQ
D7
-CS[0..3]
A11
-CS2
-FLASHWE
PB[0..7]
A15
A18
A2
PB3
IICSDA
PC2
-INSTRD
PC6
GND
-BUSACK
PC[0..7]
TMS
D1
A4
TCK
PB5
-HALT_SLP
PC4
IICSCL
TCK
PC0
IICSCL
A21
PD[0..7]
GND
TRIGOUT
TDI
A6
PB7
-CS3
RTC_VDD
IICSDA
CLK_OUT
EZ80CLK
IICSDA
IICSCL
-DIS_IRDA
IR_SD
PD2
DISABLE_IRDA
IRDA_SD
PD0
IRDA_SD
PD1
A17
D2
A16
A1
-BUSREQ
GND
D6
A9
-CS1
A23
-IOREQ
A0
A7
GND
D4
A12
-DIS_FLASH
D0
-INSTRD
-RD
A20
A14
PD7
PD2
PB4
-DIS_IRDA
PD4
TMS
PC5
PB6
EZ80CLK
PD0
PC7
-NMI
PB0
GND
TRIGOUT
-WAIT
PC3
PB2
PC1
GND
TDI
GND
GND
GND
PA7
PA5
PA3
PA1
PA6
PA4
PA2
PA0
-TRSTN
-F91_WE
-F91_WP
-RESET
PA[0..7]
A3
VCC
VCC
VCC
VCC
VCC
VCC
VCC
-TRSTN
-F91_WE
GND
-BUSACK
TDO
PB[0..7]
-WR
-NMI
-FLASHWE
CLK_OUT
-HALT_SLP
-MREQ
IICSDA
-BUSREQ
-RD
D[0..7]
-INSTRD
GND
PD[0..7]
-DIS_FLASH
-WAIT
IICSCL
-RESET
A[0..23]
-IOREQ
PC[0..7]
-CS[0..3]
RTC_VDD
-F91_WP
TDI
TRIGOUT
TCK
TMS
-TRSTN
PA[0..7]
VCC
GND
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
GND
GND
VCC
connector 2
connector 1
=
(MMA 0204)
open-drain
alternative:
Maxim
MAX6802UR29D3
Memory
WR_EN
This schematic reflects the
assembly rev B of the module.
The FLASH memory on page 3
was changed to AM29008B for
Rev D schematic.
R5
2.2K
R5
2.2K
R1
4.7K
R1
4.7K
R4
2R7
R4
2R7
U4A
74LCX32
TSSOP14
U4A
74LCX32
TSSOP14
1
2
3
U1C
74LCX04
TSSOP14
U1C
74LCX04
TSSOP14
5
6
U1F
74LCX04
TSSOP14
U1F
74LCX04
TSSOP14
13
12
U1B
74LCX04
TSSOP14
U1B
74LCX04
TSSOP14
3
4
C2
0.1uF
C2
0.1uF
JP2
HEADER 30x2/SM
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
R8
10K
R8
10K
R37
10K
R37
10K
U4B
74LCX32
TSSOP14
U4B
74LCX32
TSSOP14
4
5
6
R2
4.7K
R2
4.7K
R10
10K
R10
10K
C1
330nF
C1
330nF
JP3
JP3
1
2
R20
10K
R20
10K
R12
10K
R12
10K
U3
MAX6328UR29
SOT-23-L3
U3
MAX6328UR29
SOT-23-L3
RESET
2
C3
0.01uF
C3
0.01uF
R3
68R
R3
68R
U4D
74LCX32
TSSOP14
U4D
74LCX32
TSSOP14
12
13
11
R9
4.7K
R9
4.7K
R6
2.2K
R6
2.2K
U1A
74LCX04
TSSOP14
U1A
74LCX04
TSSOP14
1
2
JP1
HEADER 30x2/SM
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
U2
ZHX1810
U2
ZHX1810
TXD
2
SD
4
RXD
3
LEDA
1
VCC
5
GND
6
R7
10K
R7
10K



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