HCMS-39X2 Datasheet, PDF (9/22 Pages) Agilent(Hewlett-Packard) – 3.3 V High Performance CMOS 5x7 AlphaNumeric Displays

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