SSD1821 Solomon Systech, SSD1821 Datasheet - Page 28

• Manufacturer Part Number: SSD1821
• Description: (SSD1820A / SSD1821) LCD Segment / Common Driver
• Manufacturer: Solomon Systech

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SSD1820A/21
28
TABLE 3b. Parallel Timing Characteristics (T
(Read data from driver)
(Write data to driver)
Symbol
PW
P W
t
t
t
t
t
cycle
DSW
DHW
t
t
DHR
t
ACC
AS
AH
O H
t
t
D
R
F
CSH
D /C
D
CSL
R /W
E
CS
0
0
-D
REV 1.4
01/03
-D
7
7
Clock Cycle Time (write cycle)
Address Setup Time
Address Hold Time
Write Data Setup Time
Write Data Hold Time
Read Data Hold Time
Output Disable Time
Access Time (RAM)
Access Time (command)
Chip Select Low Pulse Width (read RAM)
Chip Select Low Pulse Width (read Command)
Chip Select Low Pulse Width (write)
Chip Select High Pulse Width (read)
Chip Select High Pulse Width (write)
Rise Time
Fall Time
Figure 1b. Parallel 6800-series Interface Timing Characteristics (PS0 = H, PS1 = H)
t
AS
t
Parameter
F
t
A
ACC
=-40 to 85°C, V
PW
Valid Data
CSL
t
DSW
Valid Data
DD
=1.8V, V
t
cycle
t
R
SS
t
DHW
=0V)
Min
120
t
80
15
15
55
20
40
40
AH
0
0
5
t
-
-
-
-
-
DHR
t
O H
PW
Typ
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CSH
Max
100
40
35
10
10
-
-
-
-
-
-
-
-
-
-
-
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SOLOMON