HCMS-29XX Datasheet, PDF (7/16 Pages) Agilent(Hewlett-Packard) – High Performance CMOS 5 x 7 Alphanumeric Displays

AC Timing Characteristics Over Temperature Range (-40°C to +85°C)
Timing
Diagram Ref.
Number
Description
Symbol
4.5 V < V_LOGIC <5.5 V
Min.
Max.
V_LOGIC = 3 V
Min. Max.
1
Register Select Setup Time to Chip Enable t_rss
10
10
2
Register Select Hold Time to Chip Enable
t_rsh
10
10
3
Rising Clock Edge to Falling
t_clkce 20
20
Chip Enable Edge
4
Chip Enable Setup Time to Rising Clock Edge t_ces
35
55
5
Chip Enable Hold Time to Rising Clock Edge t_ceh
20
20
6
Data Setup Time to Rising Clock Edge
t_ds
10
10
7
Data Hold Time after Rising Clock Edge
t_dh
10
10
8
Rising Clock Edge to D_OUT[1]
t_dout
10
40
10
65
9
Propagation Delay D_IN to D_OUT
t_doutp
18
30
Simultaneous Mode for One IC^[1,2]
10
CE Falling Edge to D_OUT Valid
t_cedo
25
45
11
Clock High Time
t_clkh
80
100
12
Clock Low Time
t_clkl
80
100
Reset Low Time
t_rstl
50
50
Clock Frequency Frequency
F_cyc
5
4
Internal Display Oscillator
F_inosc 80
210
80
210
Internal Refresh Frequency
F_rf
150
410
150 400
External Display Oscillator
Prescaler = 1
Prescaler = 8
F_exosc
51.2
1000
410
8000
51.2 1000
410 8000
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
MHz
KHz
Hz
KHz
KHz
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.
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