HDSP-253X HP [Agilent(Hewlett-Packard)], HDSP-253X Datasheet - Page 5

• Manufacturer Part Number: HDSP-253X
• Description: Eight Character 5 mm Smart Alphanumeric Display
• Manufacturer: HP [Agilent(Hewlett-Packard)]

AC Timing Characteristics over Temperature Range
V
Notes:
1. Worst case values occur at an IC junction temperature of 125 C.
2. For designers who do not need to read from the display, the Read line can be tied to V
3. Changing the logic levels of the Address lines when CE = "0" may cause erroneous data to be entered into the Character RAM,
4. The display must not be accessed until after 3 clock pulses (110 s min. using the internal refresh clock) after the rising edge of the
Notes:
5. F
6. F
7. t
DD
tied together.
regardless of the logic levels of the WR and RD lines.
reset line.
ST
RF
FL
Reference
Symbol
Number
= 262,144/F
F
F
= 4.5 to 5.5 V unless otherwise specified.
t
F
= F
= F
ST
RF
FL
OSC
10
11
12
13
[7]
[5]
[6]
1
2
3
4
5
6
7
8
9
OSC
OSC
/28,672.
/224.
OSC
.
Oscillator Frequency
Display Refresh Rate
Character Flash Rate
Self Test Cycle Time
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
ACH
CEH
ACC
CER
CES
t
ACS
WD
DH
t
CE
RD
DF
RC
W
R
Description
Display Access Time
Address Setup Time to Chip Enable
Chip Enable Active Time
Address Hold Time to Chip Enable
Chip Enable Recovery Time
Chip Enable Active Prior to Rising Edge of
Chip Enable Hold Time to Rising Edge of
Read/Write Signal
Write Active Time
Data Valid Prior to Rising Edge of Write Signal
Data Write Hold Time
Chip Enable Active Prior to Valid Data
Read Active Prior to Valid Data
Read Data Float Delay
Reset Active Time
Write
Read
Write
Read
Write
Read
[2, 3]
[4]
Description
25 C Typical
[2, 3]
256
4.6
57
2
DD
and the Write and Chip Enable lines can be
5
[2, 3]
Minimum
128
9.2
28
1
[1]
Min.
210
230
140
160
140
160
100
160
300
10
20
60
50
20
75
10
0
[1]
Units
kHz
Units
sec
Hz
Hz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns