Nellcor Oximax NPB-40, Service Manual

Page: 97 / 114

U24 IS HARDWARE
COMPATABLE WITH 2MBIT
TO 16MBIT BOOT BLOCK
FLASH FROM AMD,
ATMEL, INTEL, MICRON,
SHARP, AND STM
FLASH PROGRAM MEMORY
+3V Reset Trip Point
2.780V +- 0.078V
UNUSED INPUTS
U24 must be 120nS or
faster
Resistors are 1% 1/16W unless otherwise noted.
Notes:
R Packs are 5% 1/32W unless otherwise noted.
Place caps as close as practical to U22, two per side
JTAG TEST PORT
NOT POPULATED
DURING
PRODUCTION
+5V Reset Trip Point
4.599V +- 0.120V
NCS0
NCS0
NRST
NWE
TDI
T M S
TCK
NRST
NRST
TEST_MODE_L
BAUD1
CHIP_SHIP
TDI
T M S
TCK
NRST
TDO
TDO
NOE
NWE
NOE
D2
D4
A 4
D1
A18
D8
A 1
A10
D9
D8
D[0:15]
A 3
A 8
D13
A16
A16
A 7 D6
D7
A20
D15
D3
D0
A 6
D2
D14
A18
A13
D10
A 7
D9
D11
D12
A17
A11
D6
A 9
A19
A 3
A20
D10
A14
A12
A 9
A19
D13
D11
D14
D15
A 8
A 6
A17
D7
D5
A14
A10
D1
D0
A15
A 1
A 5
A13
D12
A15
A 4 D3
A12
A 5
D4
A11
D5
A 2
A 2
A[1:20]
BAUD2
T X D 3 V 7
PIC_RX3V
R X D 3 V 7
PIC_TX3V 7
RST_L5V 1,7
DIGICAL_IN3V 7
PIC_RED_IR3V 7
DIGICAL_PGM 7
DIGICAL_OUT_L 7
PIC_SYNC3V 7
PIC_RST
+3V
+3V
+3V
+3V
+3V
+3V
+3V
+3V
+3V
+3V
+5DIG
+5
C54
0.01U
C56
0.01U
C58
0.01U
RP19
10K
1
8
2
7
3
6
4
5
C61
0.01U
R27
10
U22 AT91R40807
1
3
4
5
6
7
8
9
11
12
13
14
15
16
17
20
21
22
23
24
25
26
29
30
31
32
33
34
35
37
38
39
40
41
42
43
45
46
47
48
97
98
99
100
92
93
77
96
84
10
27
28
44
61
62
81
94
95
87
86
78
65
53
52
36
19
18
2
49
50
51
56
55
54
57
59
58
66
60
63
64
67
68
69
74
75
76
70
71
72
73
83
88
89
90
91
79
80
82
85
A0/NLB
A 1
A 2
A 3
A 4
A 5
A 6
A 7
A 8
A 9
A10
A11
A12
A13
A14
A15
A16
A17
A18
A19
P28/A20/CS7
P29/A21/CS6
P30/A22/CS5
P31/A23/CS4
D0
D1
D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12
D13
D14
D15
NCS0
NCS1
P26/NCS2
P27/NCS3
NRD/NOE
NWR0/NWE
NWR1/NUB
NWAIT
P24/BMS
V D D
V D D
V D D
V D D
V D D
V D D
V D D
V D D
V D D
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
P0/TCLK0
P1/TIOA0
P2/TIOB0
P5/TIOB1
P4/TIOA1
P3/TCLK1
P6/TCLK2
P8/TIOB2
P7/TIOA2
P12/FIQ
P9/IRQ0
P10/IRQ1
P11/IRQ2
P13/SCK0
P14/TXD0
P15/RXD0
P20/SCK1
P21/TDX1/NTRI
P22/RXD1
P16
P17
P18
P19
P23
T M S
TDI
TDO
TCK
NRST
N W D O V F
MCLKI
P25/MCLKO
R112
100
U23
LTC1728-5
4
5
3
2
1
V C C 5
V C C 3
V C C A
GND
RST
T83
T82
U24
29LV400B
27
46
37
29
31
33
35
38
40
42
44
30
32
34
36
39
41
43
45
15
25
24
23
22
21
20
19
18
8
7
6
5
4
3
2
1
48
17
47
26
28
12
11
16
9 13
14
10
GND
GND
V C C
DQ0
DQ1
DQ2
DQ3
DQ4
DQ5
DQ6
DQ7
DQ8
DQ9
DQ10
DQ11
DQ12
DQ13
DQ14
DQ15/A-1
RY/BY
A 0
A 1
A 2
A 3
A 4
A 5
A 6
A 7
A 8
A 9
A10
A11
A12
A13
A14
A15
A16
A17
BYTE
CE
OE
RESET
W E
A18
A19
NC/VPP
NC/WP
NC
R44
100K
C59
0.1U
R43
178K
RP6 100
1 8
2 7
3 6
4 5
D6
BAT54SWT1
1
3
2
RP3 100
1 8
2 7
3 6
4 5
C57
0.1U
T78
RP1 100
1 8
2 7
3 6
4 5
RP7 100
1 8
2 7
3 6
4 5
RP2 100
1 8
2 7
3 6
4 5
T79
C55
0.1U
RP8 100
1 8
2 7
3 6
4 5
RP9 100
1 8
2 7
3 6
4 5
T80
RP10 100
1 8
2 7
3 6
4 5
RP5 100
1 8
2 7
3 6
4 5
T81
J3
1
2
3
4
5
6
7
RP4 100
1 8
2 7
3 6
4 5
R5
10
C53
0.1U
R73
30.9K
RP20
100K
1
8
2
7
3
6
4
5
C70
0.1U
R72
15.0K
Y2
32.000MHZ
4
3
2
1
V C C
OUT
GND
EN
T9
T74
RP15
100K
1
8
2
7
3
6
4
5
T8
C62
0.1U
C52
0.01U
T76
NPB-40 89
Technical Discussion
Figure 30
SpO
2
PCB
Schematic Diagram
(Sheet 4 of 7)