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Esquemas eléctricos de la tarjeta de circuito impreso 8486577U01 del radio UHF 25-40 W banda 2
D3_3V
R444
10.K
DNP
DNP
Q415
R459
47.K
D3_3V
R445
10.K
TP408
TEST_POINT
Q414
1
D3_3V
R422
10.K
Q413
R470
10.K
DNP
VS_INT
VS_CS
VS_RAC
C421
22.n
TP405
TEST_POINT
1
DNP
R431
BOOT_EN_IN_CH
10.K
VR400
DNP
6.80
C490
1.u
DNP
10K
47K
10K
47K
VR402
3.30
VSTBY
DNP IN MARLIN+
R466
0.
R467
0.
R468
0.
R469 0.
D3_3V
C422
C423
120.p
100n
15
PROG_OUT-ALARM_4
Q0
SPI_CLK
11
1
PROG_IO-P8_O
CLK_S
Q1
12
2
PROG_IO-P12_O
CLK_L
Q2
13
3
PROG_IO-P14_O
EN_OE
Q3
10
4
RESET
Q4
5
Q5
6
U405
Q6
VS_AUDIO_SEL
MC74HC595A
7
Q7
SPI_MOSI
14
9
VS_GAIN_SEL
SERIN
SEROUT
DNP IN MARLIN
FILT_SW_B+
R401
Q403
R460
2.7K
1.5K
PROG_OUT-ALARM_4
10K
47K
Q401
D3_3V
R436
R457
3.3K
33.K
ACCESS_PTT
47K
Q412
47K
R421
220.
SCI_CH
D3_3V
R435
R456
3.3K
33.K
PROG_IN-P6_I
47K
Q411
47K
D3_3V
R434
33.K
R455
3.3K
PROG_IO-P8_I
47K
Q410
47K
10K
Q416
47K
PROG_IO-P8_O
D3_3V
R433
33.K
R454
3.3K
PROG_IO-P12_I
47K
Q409
47K
10K
Q404
47K
PROG_IO-P12_O
D3_3V
R432
33.K
R453
3.3K
PROG_IO-P14_I
47K
Q408
47K
10K
Q405
47K
PROG_IO-P14_O
Circuitos del microprocesador y del controlador 25-40 W UHF2 (438-470 MHz) (hoja 2 de 2)
D3_3V
R458
3.3K
D401
HOOK_CH
R429
100.K
MIC_SENSE
C418
120.p
R430
39.K
R461
220.
MIC_PTT
MIC_PTT_CH
C417
120.p
D402
R406
0.
EXT_ALARM_OUT
PROG_O-ACC_C_4
R407 0.
EXT_MIC_PTT
PROG_I-ACC_C_3
R405
0.
PROG_IN
PROG_I-ACC_C_6
R404
0.
PROG_I/O
PROG_IO-ACC_C_8
R403 0.
PROG_I/O
PROG_IO-ACC_C_12
R402 0.
PROG_I/O
PROG_IO-ACC_C_14
R440
10.K
4-17
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