QSG
‐
8428
‐
R
Rev.
A
HOLT
INTEGRATED
CIRCUITS
Oct
2014
15
LED6
R18
680
R19
680
LED7
LED8
R20
680
PE
5
SENSO
R BANK U1
J3
VSENSE 1
1
2
3
3
2
1
4
O
N
( C L O
S E D )
8
5
6
7
SW1
TP2
SO
S
E
NSOR BANK
U2
nCS
SO1
J4
1
2
3
4
5
6
7
8
9
V S E N S E B A N K U 1
J7
1
2
3
4
5
6
7
8
9
V S E N S E B A N K U 2
R24
3k
R28
3k
R25
3k
R26
3k
R27
3k
R23
3k
R29
3k
R30
3k
TP7
S E N S E T R I G G E R
J6
VSENSE 2
1
2
3
TP8
3
2
1
4
O
N
( C L O
S E D )
8
5
6
7
SW2
TP5
TP9
U2
8428 SO16
SENSE1
1
SENSE2
2
SENSE3
3
SENSE4
4
SENSE5
5
SENSE6
6
SENSE7
7
SENSE8
8
SO
9
SCK
10
CS
11
SI
12
SEL
13
VLOGIC
14
GND
15
VDD
16
PE
4
3
2
1
4
U P = O
P E N ( H I G
H )
SW3
TP10
R1
680
LED11
POWER
SO
+
C3
10uF,50V
TP1
LED12
POWER
R10
2k
C7
.1uF, 50V
+
C6
22uF,50V
TP3
J1
VLOGIC
1
2
nCS
SO1
SCK
SI
SI
SCK
SCK
3V3
VDD
VL
OGI
C
C14
.1uF
5V
nCS
SEL
GND
VLOGIC
SEL
nRESET
C23
.1uF
R E S E T
MICRO
SEL
SW4
VLOGIC
PE5
nRESET
BKGD
R33
3.3K
D E B U G H D R
VLOGIC
J9
HEADER 2X3
1
2
3
4
5
6
C24
.1uF
R34
220K
R35
27R
R36
27R
SE
L
C11
.1uF
L1
F-BEAD 1.4A
Y E L L O
W
+
C1
68uF 16V
VLOGIC
C2
.1uF
TP4
TP6
3V
3
nC
S
S P I B O
A R D
INTERFACE
SO
SI
J10
2
4
6
8
10
12
14
16
1
3
5
7
9
11
13
15
T it le
S iz e
D o c u m
e n t N u m
b e r
R e v
D a t e :
S h e e t
o f
<Doc>
<Rev Code>
HI-8428 -R, 8 Input Discrete with SPI - Engineering Board
B
1
4
Thursday , September 18, 2014
J11
1
2
SO
1
M
I N I - U S B
" H O
L D I N
RESET"
J8
USB_MINI_B_0
VCC
1
D-
2
D+
3
GND
5
NC
4
CASE
6
C4
.1uF
VCC3O
VCC3O
USBDP
USBDM
U3
FT231XS-R
TXD
20
DTR#
1
RTS#
2
VCCIO
3
RXD
4
RI#
5
GND
6
DSR#
7
DCD#
8
CTS#
9
CBUS3
19
CBUS0
18
CBUS1
17
VCC
15
CBUS2
10
RESET#
14
GND
16
3V3OUT
13
USBDM
12
USBDP
11
C20
0.1uF
* *
* *
5V
USBDP
USBDM
FB1
FERRITE BEAD
1
2
C22
10nF
C25
47pF
C26
47pF
TXD0
RXD0
J2
U1_VDD
1
2
VD
D
R E D
C12
.1uF
SC
K
J12
U2_VDD
1
2
VD
D
PE4
PE2
PE3
J13
U2_VLOGIC
1
2
VL
O
G
IC
N o t e s :
1. There should be no traces under the SENSE[1:8] lines
of U1 and U2 to prevent inductive pick up during the lighting test, this
incudes the GND and power planes
PE
2
PE
3
G R N
R E D
C5
.1uF
LED10
R38
680
R11
680
LED1
U1
8428 SO16
SENSE1
1
SENSE2
2
SENSE3
3
SENSE4
4
SENSE5
5
SENSE6
6
SENSE7
7
SENSE8
8
SO
9
SCK
10
CS
11
SI
12
SEL
13
VLOGIC
14
GND
15
VDD
16
R37
680
LED9
R12
680
LED2
B A N K U 2
B A N K U 1
R15
680
LED3
BKGD
C21
220nF
R32
4.7K 1%
nRESET
R13
10k
R4
3k
R6
3k
R3
3k
R5
3k
U4
MC9S12XDT512CAA
SS1/PP3
1
SCK1/PP2
2
MOSI1/PP1
3
MISO1/PP0
4
IOC0/PT0
5
IOC1/PT1
6
IOC2/PT2
7
IOC3/PT3
8
VDD1
9
VSS1
10
IOC4/PT4
11
IOC5/PT5
12
IOC6/PT6
13
IOC7/PT7
14
MODC/BKGD
15
PB0
16
PB1
17
PB2
18
PB3
19
PB4
20
PB5
21
PB6
22
PB7
23
XCLKS/PE7
24
PE6
25
PE5
26
ECLK/PE4
27
VSSR1
28
VDDR1
29
RESET
30
VDDPLL
31
XFC
32
VSSPLL
33
EXTAL
34
XTAL
35
TEST
36
PE3
37
PE2
38
IRQ/PE1
39
XIRQ/PE0
40
PA0
41
PA1
42
PA2
43
PA3
44
PA4
45
PA5
46
PA6
47
PA7
48
VDD2
49
VSS2
50
PAD00/AN00
51
PAD01/AN01
52
PAD02/AN02
53
PAN03/AN03
54
PAD04/AN04
55
PAD05/AN05
56
PAD06/AN06
57
PAD07/AN07
58
VDDA
59
VRH
60
VRL
61
VSSA
62
PS0/RXD0
63
PS1/TXD0
64
PS2/RXD1
65
PS3/TXD1
66
VREGEN
67
PJ7
68
PJ6
69
SCK0
70
MOSI0
71
SS0
72
MISO0
73
PM1/TX
74
PM0/RX
75
VSSX
76
VDDX
77
SCK2
78
MOSI2
79
MISO2
80
R7
3k
R2
3k
R14
10k
R8
3k
C13
10pF
R9
3k
C8
10pF
C18
220nF
Y 1
4MHz
C19
220nF
VLOGIC
C9
220nF
C10
220nF
VLOGIC
VLOGIC
RXD0
C15
220nF
C17
.01uF
C16
470pF
TXD0
R22
1 Mohm
R16
680
LED4
LED5
R17
680
