Differences Between Standard Quality Grade Products And (A) Products; Mask Options; Mask Options Of Mask Rom Versions - NEC PD78052 User Manual

1.9 Differences between Standard Quality Grade Products and (A) Products

Table 1-1 shows the differences between the standard quality grade products ( PD78052, 78053, 78054) and (A)
products ( PD78052(A), 78053(A), 78054(A)).
Table 1-1. Differences between Standard Quality Grade Products and (A) Products
Part Number
Standard Quality Grade Products
Item
Quality grade Standard
Package • 80-pin plastic QFP
(14 14 mm, Resin thickness : 1.4 mm)
• 80-pin plastic TQFP (Fine pitch) (12
Recommended
Refer to separate Data Sheets
soldering conditions

1.10 Mask Options

The mask ROM versions ( 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 PD78054 subseries are shown in Table 1-2.
Pin names
P60 to P63
48
CHAPTER 1 OUTLINE ( PD78054 Subseries)
Note 3
12 mm)
Table 1-2. Mask Options of Mask ROM Versions
Pull-up resistor connection can be specified in 1-bit units.
(A) Products
Special
80-pin plastic QFP
(14 14 mm, Resin thickness : 2.7 mm)
Mask options