MB90F548GPF datasheet(46/70 Pages) CYPRESS

46 / 70 page

Document Number: 002- 07696 Rev. *A

Page 46 of 70

MB90540G/545G Series

11.4.2 Clock Output Timing

(MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC

 3.5 V to 5.5 V, V

 AV

 0.0 V, T

 40 C to 105 C)

(Other than MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC

 5.0 V  10, V

 AV

 0.0 V, T

 40 C to 105 C)

11.4.3 Reset and Hardware Standby Input Timing

(MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC

 3.5 V to 5.5 V, V

 AV

 0.0 V, T

 40 C to 105 C)

(Other than MB90543G(S)/547G(S)/548G(S)/F548GL(S): VCC

 5.0 V  10, V

 AV

 0.0 V, T

 40 C to 105 C)

Note : “tcp” represents one cycle time of the machine clock.

Oscillation time of oscillator is time that amplitude reached the 90

. In the crystal oscillator, the oscillation time is between

several ms to tens of ms. In ceramic oscillator, the oscillation time is between handreds of

s to several ms. In the external

clock, the oscillation time is 0 ns.

Any reset can not fully initialize the Flash Memory if it is performing the automatic algorithm.

Parameter

Symbol

Pin name

Condition

Value

Units

Remarks

Min

Max

Cycle time

tCYC

CLK

VCC

 5 V  10

62.5



CLK

  CLK

tCHCL



Parameter

Symbol

name

Value

Units

Remarks

Min

Max

Reset input time

tRSTL

RST

4 tCP



Under normal operation

Oscillation time of

oscillator

 4 t



In stop mode

100



s

In pseudo timer mode (MB90543G

(S) /547G (S) /548G (S) )

4 tCP



In pseudo timer mode

(Other than MB90543G (S) /547G

(S) /548G (S) )

2 tLCP



s

In sub-clock mode,

sub-sleep mode,

timer mode

Hardware standby input time

tHSTL

HST

4 tCP



Under normal operation

CLK

tCYC

2.4 V

0.8 V

tCHCL

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