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參數(shù)資料
| 型號(hào)： | OPTA01 |
| 英文描述： | Programmable Bar Code Decode ICs |
| 中文描述： | 可編程條碼解碼芯片 |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 153K |
| 代理商： | OPTA01 |
4-57
PLCC Drying
Whenever Vapor Phase or Infra-
red Reflow Technologies are used
to mount the PLCC packages,
there is a possibility that
previously absorbed moisture,
heated very rapidly to the reflow
temperatures, may cause the
package to crack from the
internal stresses. There is a
reliability concern that moisture
may then enter the package over
a period of time, and metal
corrosion may take place,
degrading the IC performance.
To reduce the amount of
absorbed moisture and prevent
cracking, all of the PLCC ICs
should undergo one of the
Pin Definitions
Figure 3. HBCR-2210 Serial Pinout.
following baking cycles. The
parts must then be mounted
within 48 hours.
If the parts are not mounted with-
in 48 hours, they must be re-
baked.
The total number of baking cycles
must not exceed two. If the ICs
are baked more than twice,
Hewlett-Packard cannot guaran-
tee the performance and
reliability of the parts.
Neither bake cycle can be per-
formed in the standard shipping
tubes. The ICs must be baked in
an ESD safe, mechanically stable
container, such as an aluminum
tube or pan.
Cycle
A
B
Temperature
125
°
C
60
°
C
Time
24 hrs
96 hrs
Notes
8
Note:
8. Cycle B must be done in atmosphere of <5% relative
humidity air or nitrogen.
BR0
BR1
STB
CTS
RTS
LSE
SCT
TRG
RST
RxD
TxD
SDI
SSY
LED
BPR
WR
RD
XTAL 2
XTAL 1
V
SS
V
CC
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
EA + 5 V
ALE
NC
SMD + 5 V
EEP
EPC
ECE/PT1
EIO/PT0
A10
A9
A8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
PIN MNEMONICS
ADDRESS/DATA BUS
RECEIVED DATA
TRANSMITTED DATA
BAUD RATE
PARITY
STOP BITS
LASER SCAN ENABLE
SCANNER TYPE
SCANNER DIGITAL INPUT
LED CONTROL LINE
BEEPER CONTROL LINE
DATA MEMORY WRITE
DATA MEMORY READ
CRYSTAL INPUT
CRYSTAL INPUT
SERIAL MODE SELECT
REQUEST TO SEND
CLEAR TO SEND
IC RESET
EEPROM SELECT
EEPROM CLOCK
EEPROM CHIP ENABLE
EEPROM I/O
LASER TRIGGER LINE
SCANNER SYNCHRONIZATION
ADDRESS LINE #8
ADDRESS LINE #9
ADDRESS LINE #10
EXTERNAL PROGRAM ENABLE
ADDRESS LATCH ENABLE
POWER
GROUND
AD0-AD7
RxD
TxD
BR0-BR1
PT0-PT1
STB
LSE
SCT
SDI
LED
BPR
WR
RD
XTAL1
XTAL2
SMD
RTS
CTS
RST
EEP
EPC
ECE
EIO
TRG
SSY
A8
A9
A10
EA
ALE
VCC
VSS
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