HCMS-xxxx Hewlett-Packard, HCMS-xxxx Datasheet - Page 7

• Manufacturer Part Number: HCMS-xxxx
• Description: High Performance CMOS 5 x 7 Alphanumeric Displays
• Manufacturer: Hewlett-Packard

AC Timing Characteristics Over Temperature Range (-40 C to +85 C)
Notes:
1. Timing specifications increase 0.3 ns per pf of capacitive loading above 15 pF.
2. This parameter is valid for Simultaneous Mode data entry of the Control Register.
Diagram
Number
Timing
Ref.
10
11
12
1
2
3
4
5
6
7
8
9
Register Select Setup Time to
Chip Enable
Register Select Hold Time to
Chip Enable
Rising Clock Edge to Falling
Chip Enable Edge
Chip Enable Setup Time to
Rising Clock Edge
Chip Enable Hold Time to
Rising Clock Edge
Data Setup Time to Rising
Clock Edge
Data Hold Time after Rising
Clock Edge
Rising Clock Edge to D
Propagation Delay D
Simultaneous Mode for
one IC
CE Falling Edge to D
Clock High Time
Clock Low Time
Reset Low Time
Clock Frequency
Internal Display Oscillator
Frequency
Internal Refresh Frequency
External Display Oscillator
Frequency
Prescaler = 1
Prescaler = 8
[1,2]
Description
IN
OUT
OUT
to D
Valid
[1]
OUT
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
F
F
F
F
rss
rsh
clkce
ces
ceh
ds
dh
dout
doutp
cedo
clkh
clkl
rstl
cyc
rf
exosc
inosc
4.5 V < V
Min.
51.2
150
410
10
10
20
35
20
10
10
10
80
80
50
80
LOGIC
Max.
1000
8000
<5.5 V
210
410
40
18
25
5
7
Min.
51.2
100
100
150
410
V
10
10
20
55
20
10
10
10
50
80
LOGIC
= 3 V
Max.
1000
8000
210
400
65
30
45
4
Units
MHz
KHz
KHz
KHz
Hz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns