4H4CEPM.pdf - 第32页
Page 22 PlanPin (Number of provisional pins) ActualPin (Number of actual pins) Pin No. Missing pin information Chip Data 4. Pin Information ∗ ∗ ∗ ∗ ∗ PinPitch ∗ ∗ ∗ ∗ ∗ ActualPin (Number of actual pins) ∗ ∗ ∗ ∗ ∗ PlanPin…
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301
CM
Chip Data
4H4C-E-PMA01-A02-01
2. Lead float check information
Edit the information about the lead float check.
<Lead float check>
Specify whether to check the lead float.
(To check the lead float, the optional lead checker is required on the machine.)
Selecting “Yes” changes the window as follows. Set the items displayed newly.
3. Mounting load
Type what load will be applied for mounting.
4H4C-EPt-EdCl-011
4H4C-EPt-EdCl-012
.oN emaN noitcnuF
1noitingocerresalrofepytCI noitingocerresalehthtiwhsiugnitsidotepytCIehtesoohC
2xaMtaolfdaeL .gnitnuomrofelbawollaeblliwtaolffohtgneltahwotepyT
.detnuomebtonlliwecnarelotehtgnideecxepihcehT
3gninnacsresaL .pitnipehtmorfderusaem,taolfdaelehtkcehcoterehwepyT
)edishcaerofsihttupnI(
4H4C-007TE
9Q4C-037TE
1
2
3
Page 22
PlanPin (Number of provisional pins)
ActualPin (Number of actual pins)
Pin No.
Missing pin information
Chip Data
4. Pin Information
∗∗
∗∗
∗ PinPitch
∗∗
∗∗
∗ ActualPin (Number of actual pins)
∗∗
∗∗
∗ PlanPin (Number of provisional pins)
As to SOP, QFP, etc., leads of the same width are aligned at the same pitches generally.
But there are the following exceptions, too.
In such cases, the program must be set not to search for the tips of the leads at those positions
during image processing. Therefore, register the position where a lead does not exist as “missing
pin.”
When you register the position of the missing pin, the notion of “provisional pins” is used.
Suppose there are leads at the same pitches even when some leads are missing and so on, and
number the imaginary leads. This line of leads including imaginary leads is called “provisional pins.”
Among them, the leads which actually exist are called “actual pins.” ( “provisional pins” = “imagi-
nary leads” + “actual pins (the leads which actually exist)” )
Then, register the positions of the imaginary leads using the pin No.
When data is created, the position of the actual pin is represented by O and that of imaginary lead
is represented by ×. This data is called “missing pin information.” And the number of actual pins is
called “ActualPin,” that of provisional pins is called “PlanPin.”
444C-015E
Pitch
A lead is missing due
to the chip designing.
A radiation panel is
between leads.
A frame mark is
between leads.
1234567 1234567 1234567
Suppose there is an
imaginary lead at the
position of the missing pin.
Suppose there are imagi-
nary leads at the position of
the radiation panel.
Suppose there is an
imaginary lead at the
position of the frame mark.
444C-016E
444C-017E
1
O
7
6
2
O
3
O
4
×
5
O
6
O
7
O
1
O
7
4
2
O
3
×
4
×
5
×
6
O
7
O
1
O
7
6
2
O
3
O
4
×
5
O
6
O
7
O
4H4C-E-PMA01-A02-01
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301
CM
444C-EPt-EdCl-014
Chip Data
3-4 Editing QFP Chip
1. Click on the radio button of “QFP.”
• QFP switch is displayed.
2. Click on QFP .
• [QFP Extension] window opens.
3. Enter the PinPitch and PlanPin.
• Pins are displayed.
4. Repeat step 3. until you finish enter-
ing the information of 4side.
5. Enter the actual pins arrangement.
∗ When ActualPin is not the same as
PlanPin,click the missing pin position(s).
6. Click on Close .
• [ChipLibrary] window opens again.
444C-EPt-EdCl-014
4H4C-EPt-EdCl-008
4H4C-E-PMA01-A02-01