HP E3472A, User Manual, Page: 95 / 153

Table 8-6. Clock Timing (E3472A)
Characteristic Symbol SH7040 Typical
(*1)
Worst Case Unit
min max min max min max
Operating frequency f
op
4 28.7 4 33.3 4 33.3 MHz
Clock cycle time t
cyc
34.8 250 30 250 30 250 ns
Clock low-pulse width t
CL
10 - 13 - 7 - ns
Clock high-pulse width t
CH
10 - 15 - 7 - ns
Clock rise time t
cr
- 5 - 4 - 8 ns
Clock fall time t
cf
- 5 - 3 - 8 ns
EXTAL input frequency t
EX
4 10 4 10 4 10 MHz
EXTAL input cycle time t
Excyc
100 250 100 250 100 250 ns
EXTAL input low-level pulse width t
EXL
40 - 40 - 40 - ns
EXTAL input high-level pulse width t
EXH
40 - 40 - 40 - ns
EXTAL input rise time t
EXR
- 5 - 5 - 5 ns
EXTAL input fall time t
EXF
- 5 - 5 - 5 ns
Reset Oscillation setting time t
OSC1
10 - 10 - 10 - ms
Software standby oscillation setting time t
OSC2
10 - 10 - 10 - ms
*1 Typical outputs measured with 50pF load
Specifications and Characteristics
Electrical Specifications
80