Cypress SL811HS 用户手册
SL811HS
Document 38-08008 Rev. *D
Page 30 of 32
Clock Timing Specifications
Ordering Information
CLK
CLOCK TIMING
trise
tfall
thigh
tclk
tlow
Clock Timing
Parameter
Description
Min.
Typ.
Max.
t
CLK
Clock Period (48 MHz)
20.0 ns
20.8 ns
t
HIGH
Clock HIGH Time
9 ns
11 ns
t
LOW
Clock LOW Time
9 ns
11 ns
t
RISE
Clock Rise Time
5.0 ns
t
FALL
Clock Fall Time
5.0 ns
Clock Duty Cycle
45%
55%
Part Number
Package Type
SL811HS
28-pin PLCC
–
SL811HS-JCT
28-pin Lead free
–
SL811HST-AXC
48-pin Lead free
–
Package Diagrams
DIMENSIONS IN INCHES MIN.
MAX.
0.045
0.055
0.055
0.026
0.013
0.032
0.021
0.020 MIN.
0.090
0.165
0.120
0.180
0.485
0.495
0.495
0.450
0.458
0.458
0.458
0.450
0.495
0.485
0.390
0.430
0.430
4
26
18
12
11
5
19
25
0.004
SEATING PLANE
1
PIN #1 ID
28-Lead Plastic Leaded Chip Carrier J64
51-85001-*A