NEC PD78052 - Mask Options of Mask ROM Versions; Differences between Standard Quality Grade Products and (A) Products; Mask Options

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CHAPTER 1 OUTLINE ( µ PD78054 Subseries)
1.9 Differences between Standard Quality Grade Products and (A) Products
Table 1-1 shows the differences between the standard quality grade products ( µ PD78052, 78053, 78054) and (A)
products ( µ PD78052(A), 78053(A), 78054(A)).
Table 1-1. Differences between Standard Quality Grade Products and (A) Products
Part Number
Standard Quality Grade Products (A) Products
Item
Quality grade Standard Special
Package • 80-pin plastic QFP
Note 3
80-pin plastic QFP
(14 × 14 mm, Resin thickness : 1.4 mm) (14 × 14 mm, Resin thickness : 2.7 mm)
• 80-pin plastic TQFP (Fine pitch) (12 × 12 mm)
Recommended
Refer to separate Data Sheets
soldering conditions
1.10 Mask Options
The mask ROM versions ( µ PD78052, 78053, 78054, 78055, 78056, 78058) provide pull-up resistor mask options
which allow users to specify whether to connect a pull-up resistor to a specific port pin when the user places an order
for the device production. Using this mask option when pull-up resistors are required reduces the number of
components to add to the device, resulting in board space saving.
The mask options provided in the
µ PD78054 subseries are shown in Table 1-2.
Table 1-2. Mask Options of Mask ROM Versions
Pin names Mask options
P60 to P63 Pull-up resistor connection can be specified in 1-bit units.