PRODUCT OVERVIEW
S3C821A/P821A
Table 1-1. S3C821A Pin Descriptions (Continued)
Pin
Names
SEG16–
SEG23
SEG24–
SEG31
A8–A15
AD0–AD7
AS
DR
DW
DM
Pin
Type
Pin
Description
I/O LCD segment signal output
I/O LCD segment signal output
I/O External interface address lines
I/O External interface address/data lines
I/O Address strobe
I/O Data read
I/O Data write
I/O Data memory select
Circuit
Type
H-32
Pin
Numbers
72–79 (74–80, 1)
Share
Pins
P0.0–P0.7
H-32 80, 1–7 (2–9) P1.0–P1.7
H-32
H-32
D-4
D-4
D-4
D-4
72–79 (74–80, 1)
80, 1–7 (2–9)
8 (10)
9 (11)
18 (20)
19 (21)
P0.0–P0.7
P1.0–P1.7
P2.0
P2.1
P2.2
P2.3
NOTE: Parentheses indicate pin number for 80-QFP package.
1-8