Motorola EP450

UHF 440-470 MHz PCB 84863848Z13-C Schematic Diagrams, Overlays, and Parts Lists 11-31
HKLN4216A November 24, 2003
2
5
1
4
6
ACCESSORY
CONNECTOR
INTERNAL
SPEAKE
R
0
Not Placed
Not Placed
Not Placed
Not Placed
Audio
MICROPHONE
CONNECTOR
VHF UHF
R513
R515
R516
R517
DC Level 0.3 - 0.4 V low
Not Placed 0
100k
Supply = 7.42
1/2 Supply = 3.22
Not_Placed:NU
1
3
2
Q482
R494
330K
C499
82p
F
5V_A
C456
0.1uF
R478
2.2K
1u
F
C498
1000pF
C493
470pF
C488
C489
470pF
R469
10
Not_Placed:N
U
R482
330K
5V_B
5V_B
R471
2.2K
Not_Placed:N
U
150K
R483
1000pF
C461
C458
0.1u
F
C494
2.2uF
0.1uF
C483
R475
180K
C453
4.7uF
10 V
3V_A
D491
C457
NC
R514
100K
0.1u
F
10K
R523
0.1uF
C462
NC
R512
150K
C455
.022uF
0
R491
D471
1uF
C496
C495
1uF
330
R474
3V_A
C476
.022uF
3V
L471
390nH
100K
BK1005HM471
E452
J470-1
1
R485
E453
BK1005HM471
2
SVR
6
VCC
C490
470pF
U490
7
GN D
4
INNEG
INPO
S
3
1
MOD
E
5
OUTNEG
8
OUTPO
S
6
3
1
4
TDA854
1
220pF
C513
Q472
47
K
R255
1%
3.9K
Not_Placed:NU
R498
5.6K
0.1u F
C477
2
R495
A_MOD_OUT
3V_A
20V
MMBZ5250B
VR474
.022uF
C475
R477
2.2K
2.2uF
C471
150pF
C479
Q481
Not_Placed:N
U
1
3
2
3V_A
C470
0.1uF
150pF
C473
C460
0.1uF
3V
C451
0.1uF
R515
Q490
UMG5
2
6
4
1
3
C464
0.1uF
2.2K
Not_Placed:NU
R516
R484
6.8pF
C512
NU
R513
5V
R522
Q520
IMX1
2
4
3
100K
2
4
1
3
NC
NC
Q471
Not_Placed:N
U
R499
270K
24K
R462
C478
150pF
100K
0.1uF
C452
Not_Placed:N
U
R481
220pF
C511
C474
150pF
C465
1000pF
3V_A
47K
NC
680
R451
R472
2
3
1
8
4
R492
24K
C497
LM2904
U510-1
0
R487
0.1u
F
Not_Placed:N
U
C481
.01uF
NC
NU
R521
C482
Not:Placed:N
U
C463
0.1uF
.01uF
C480
0.1uF
R520
100K
U480-2
LM2904
6
5
7
8
4
5V_A
6
3
5V
Not_Placed:N
U
5V_B
Q470
10K
R496
Not_Placed:NU
R480
0
BK1005HM471
E451
NC
100K
R476
100K
R486
5V_A
Not_Placed:NU
330K
R488
Not_Placed:NU
R489
91K
0.1uF
C472
680
R473
C492
10uF
R460
24K
IMX1
Q520
5
1
6
C484
.033uF
Not_Placed:NU
R479
100K
R464
30K
VR473
MMBZ5250B
20V
J491-33
J491-44
0.1uF
C459
24K
R463
VR47
2
32
VDDCP
33
VDDD
11
VDDDAC
45
VDDRC
27
VDDSYN
7
VOX
12
SQCAP
17
SQDET
9
SQIN
28
SYN
36
TXRTN
44
TXSND
10
UI
O
1
VDDA
48
MICEXT
46
MICINT
40
MOD
26
NC
8
PLCAP
PLCAP2
25
43
RXRTN
39
RXSND
3
GND A
31
GNDD
30
GNDDO
47
GNDRC
23
GND
SYN
19
HSIO
24
LCAP
18
LSIO
2
DISC
29
F1200
15
GCB0
14
GCB1
13
GCB2
35
GCB3
37
GCB4
38
GCB5
16
CHACT
CLK
21
34
CLK168
20
CSX
6
DAC G
5
DACR
4
DACU
22
DATA
U451
30C53
41
AUDIO
42
AUXTN
1200pF
C467
VR471
5V_B
LM2904
U480-1
2
3
1
8
4
C466
Not_Placed:NU
LM2904
U510-2
6
5
7
8
4
NU
R517
J491-1
1
R511
100K
2.2K
R490
Not_Placed:NU
3
0.1uF
C518
UMG5
U511
2
6
4
1
16pF
C514
R493
330K
R519
100K
R518
220K
VR47
5
NC
NC
2.2K
R470
15V
MMBZ5245B
2
1MEG
R497
D470
Not_Placed:NU
1uF
C519
5V_A
5V_B
S1
7
4
S2
S3
6
5
S4
0.1uF
C454
J471
1
M1
2
M2
3
M3
3V
5V
OPT_MIC
VS_GAIN_SEL
DEMOD
ASFIC_CS
BATT_CHARGE
OPT_TX_AUD_RETURN
OPT_RX_AUD_SEND_DETECTOR
CH_ACT
VO X
PWR_SET
EXT_MIC_PTT
OPT_TX_AUD_FLAT_RETURN
SW_B+
16_8_MHZ
MOD_OUT
RESET
OPT_RX_AUD_RETURN
OPT_RX_AUD_SEND_UNMUTED
OPT_TX_AUD_SEND
SPI_DATA_OUT
LSI
O
SPI_CLK
SQ_DET
BW_SEL
F1200
HSIO
VS_AUDIO_SEL
uP_CLK
SCI
BOOT_ENA
2
5
Figure 11-24. UHF (438-470 MHz) Microprocessor Circuitry Schematic Diagram