參數(shù)資料
型號: STPCI2HEYI
英文描述: PERIPHERAL (MULTIFUNCTION) CONTROLLER
中文描述: 周邊(多功能)控制器
文件頁數(shù): 39/71頁
文件大?。?/td> 1071K
代理商: STPCI2HEYI
ELECTRICAL SPECIFICATIONS
Issue 2.4 - February 11, 2002
39/69
4.5 AC CHARACTERISTICS
Table 4-5
through
Table 4-22
list the AC
characteristics including output delays, input
setup requirements, input hold requirements and
output float delays. These measurements are
based on the measurement points identified in
Figure 4-1
. The rising clock edge reference level
VREF, and other reference levels are shown in
Table 4-4
below for the STPC Industrial. Input or
output signals must cross these levels during
testing.
Figure 4-1
shows output delay (A and B) and
input setup and hold times (C and D). Input setup
and hold times (C and D) are specified minimums,
defining the smallest acceptable sampling window
a synchronous input signal must be stable for
correct operation.
Note: Refer to
Figure 4-1
.
Table 4-4. Drive Level and Measurement Points for Switching Characteristics
Symbol
V
REF
V
IHD
V
ILD
Value
1.5
3.0
0.0
Units
V
V
V
Figure 4-1. Drive Level and Measurement Points for Switching Characteristics
CLK:
V
Ref
V
ILD
V
IHD
Tx
LEGEND:
A - Maximum Output Delay Specification
B - Minimum Output Delay Specification
C - Minimum Input Setup Specification
D - Minimum Input Hold Specification
V
Ref
Valid
Input
Valid
Output n+1
Valid
Output n
OUTPUTS:
INPUTS:
MAX
MIN
A
B
C
D
V
Ref
V
ILD
V
IHD
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