參數(shù)資料
型號: CY7C68015A
廠商: Cypress Semiconductor Corp.
英文描述: EZ-USB FX2LP USB Microcontroller
中文描述: 的EZ - USB FX2LP的USB微控制器
文件頁數(shù): 36/55頁
文件大小: 1958K
代理商: CY7C68015A
CY7C68013A/CY7C68014A
CY7C68015A/CY7C68016A
Document #: 38-08032 Rev. *G
Page 36 of 55
9.0
AC Electrical Characteristics
9.1
USB 2.0-compliant in full- and high-speed modes.
USB Transceiver
9.2
Program Memory Read
Notes:
17. CLKOUT is shown with positive polarity.
18. t
ACC1
is computed from the above parameters as follows:
t
ACC1
(24 MHz) = 3*t
CL
– t
AV
–t
DSU
= 106 ns
t
ACC1
(48 MHz) = 3*t
CL
– t
AV
– t
DSU
= 43 ns.
t
CL
t
DH
t
SOEL
t
SCSL
PSEN#
D[7..0]
OE#
A[15..0]
CS#
t
STBL
data in
t
ACC1
t
AV
t
STBH
t
AV
Figure 9-1. Program Memory Read Timing Diagram
CLKOUT
[17]
[18]
Table 9-1. Program Memory Read Parameters
Parameter
Description
Min.
Typ.
20.83
41.66
83.2
Max.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
Notes
48 MHz
24 MHz
12 MHz
t
CL
1/CLKOUT Frequency
t
AV
t
STBL
t
STBH
t
SOEL
t
SCSL
t
DSU
t
DH
Delay from Clock to Valid Address
Clock to PSEN Low
Clock to PSEN High
Clock to OE Low
Clock to CS Low
Data Set-up to Clock
Data Hold Time
0
0
0
10.7
8
8
11.1
13
9.6
0
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