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參數資料
| 型號： | FS6054 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LOW-SKEW CLOCK FANOUT BUFFER ICs |
| 中文描述： | 低偏移時鐘扇出緩沖器集成電路 |
| 文件頁數： | 12/19頁 |
| 文件大小： | 386K |
| 代理商： | FS6054 |
XT
April 1999
4.5.99
12
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Table 11: Serial Interface Timing Specifications
Unless otherwise stated, all power supplies = 3.3V ± 5%, no load on any output, and ambient temperature range T
= 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal
characterization data and are not currently production tested to any specific limits. MIN and MAX characterization data are
±
3
σ
from typical.
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
MIN.
MAX.
UNITS
Clock frequency
f
SCL
t
BUF
SCL
10
400
kHz
μ
s
μ
s
μ
s
Bus free time between STOP and START
4.7
Set up time, START (repeated)
t
su:STA
4.7
Hold time, START
t
hd:STA
4.0
Set up time, data input
Hold time, data input
t
su:DAT
t
hd:DAT
SDA
SDA
Minimum delay to bridge undefined region of the fall-
ing edge of SCL to avoid unintended START or STOP
SDA, SCL
SDA, SCL
250
300
ns
ns
Output data valid from clock
t
AA
3.5
μ
s
Rise time, data and clock
Fall time, data and clock
t
r
t
f
t
H
1000
300
ns
ns
μ
s
μ
s
μ
s
High time, clock
SCL
4.0
Low time, clock
t
L
SCL
4.7
Set up time, STOP
t
su:STO
4.0
Figure 12: Bus Timing Data
SCL
SDA
~~
~~
~~
STOP
t
su:STO
t
hd:STA
START
t
su:STA
ADDRESS OR
DATA VALID
DATA CAN
CHANGE
Figure 13: Data Transfer Sequence
SCL
SDA
IN
t
hd:DAT
~~
t
hd:STA
t
su:STA
t
su:STO
t
L
t
H
SDA
OUT
t
su:DAT
~~
~~
t
BUF
t
r
t
f
t
AA
t
AA
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