Samsung S3C8275X - Manual (Page 302)

S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X ELECTRICAL DATA
17-7
Table 17-5. A.C. Electrical Characteristics
(T
A
=
− 25 °
C to + 85
°
C, V
DD
= 2.0 V to 3.6 V)
Parameter Symbol Conditions Min Typ Max Unit
External SCK source 1,000
− −
ns SCK cycle time t
KCY
Internal SCK source 1,000
External SCK source 500 SCK high, low width t
KH
, t
KL
Internal SCK source t
KCY
/2
−50
External SCK source 250 SI setup time to SCK high t
SIK
Internal SCK source 250
t
KSI
External SCK source 400 SI hold time to SCK high
Internal SCK source 400
External SCK source
− −
300 ns Output delay for SCK to SO t
KSO
Internal SCK source 250
Interrupt input, High, Low width t
INTH ,
t
INTL
All interrupt
V
DD
= 3 V
500 700
−
ns
nRESET input Low width t
RSL
Input
V
DD
= 3 V
10
− − µs
t INTH t INTL
0.8 V DD
0.2 V DD
NOTE: The unit t CPU means one CPU clock period.
External
Interrupt
Figure 17-3. Input Timing for External Interrupts