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14. HOW TO REPLACE A FLAT PACKAGE IC
If you do not have the special tools (for example: SPOT HEATER) to remove the SPOT
HEATER'S Flat IC, If you have solder (large amount) a soldering iron and a cutter knife, you can
easily remove IC's even though large than 100 pin.
14.1. PREPARATION
14.1.1. Pb Solder
- SOLDER
Sparkle Solder 115A-1, 115B-1 or Almit Solder KR-19, KR-19RMA
- Soldering Iron
Tip Temperature of 662 ± 50°F (350 ± 10°C)
Note: We recommend a 30 to 40 Watt soldering iron. An expert
may be able to use a 60 to 80 Watt iron where someone with less
experience could overheat and damage the PCB foil
- Flux
PDF created with pdfFactory Pro trial version
I/O
High
A2
O
Active
A3
O
Active
A4
O
Active
A5
O
Active
A6
O
Active
A7
O
Active
VCC
VCC
-
A8
O
Active
A9
O
Active
A10
O
Active
A11
O
Active
A12
O
Active
A13
O
Active
A14
O
Active
A15
O
Active
VSS
VSS
-
A16
O
Active
High-
Low
Pin
Description
Z
-
Active 84
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Active 85
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Active 86
DAC for OSC
-
Active 87
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Active 88
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Active 89
input port for
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-
90
input port for
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Active 91
-
Active 92
-
Active 93
-
Active 94
IRQ7 HDLCIRQ
-
Active 95
CS2 for FPGA
-
Active 96
CS1 for SRAM
-
Active 97
CS0 for FLASH
-
Active 98
-
-
99
-
Active 100
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I/O
High
AN5
I
Fixed
(3.3V)
RDY
I
O
TRIM
AVSS
VSS
VSS
VSS
I
Normal
DIP SW5
I
Normal
DIP SW6
P26
I
P27
I
Fixed
(3.3V)
RSSIEN
I
Normal
I
Normal
O
Normal
O
Normal
O
Normal
VCC
VCC
A20
O
A21
O
Active
High-
Z
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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