Motorola CP040 Informasi Layanan - Halaman 28
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Halaman Cetak
3-12
IC Designator
U401
Microprocessor
U402
EEPROM
U404
Flash ROM
Pin
Pin Function
82
PA3_IC4_OC5_OC1
83
PA4_OC4_OC1
84
PA5_OC3_OC1
85
PA6_OC2_OC1
86
PA7_PA1_OC1
87
VSSR
88
VDDR
89
ECLK (NU)
90
EXTAL
91
XTAL
92
VDDSYN
93
XFC (NU)
94
RESET
95
LVOUT
96
IRQ
97
PD0_RXD
98
PD1_TXD
99
PD2_MISO
100
PD3_MOSI
1
Chip select
2
Serial data out
3
Write protect
4
Vss
5
Serial data in
6
Serial clock
7
Hold
8
Vcc
1
A11
2
A9
3
A8
4
A13
5
A14
6
NC
7
EN_WE
8
Vcc
9
RESET
TROUBLESHOOTING TABLES
DC Voltage
Comments (Condition)
3.00
0
Squelch detect input
0
Channel activity input
0
0
GND
3.23
1.60
1.70
Clock from U451-28
1.40
Not used
0
0
3.20
From U320
0
3.20
3.23
1.9
0
3.23
3.23
From U401-3
0
3.23
GND
3.23
0
3.23
3.23
3.06
3.08
3.05
0.13
0.31
3.17
3.21
From U401-4
3.23
3.20