参数资料
型号: ISD5108EYI
厂商: WINBOND ELECTRONICS CORP
元件分类: 音频合成
英文描述: 480 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28
封装: 8 X 13.4 MM, LEAD FREE, PLASTIC, TSOP1-28
文件页数: 53/89页
文件大小: 600K
代理商: ISD5108EYI
ISD5100 SERIES
Publication Release Date: May 16, 2007
- 57 -
Revision 1.4
I
2C INTERFACE TIMING
STANDARD-MODE
FAST-MODE
PARAMETER
SYMBOL
MIN.
MAX.
MIN.
MAX.
UNIT
SCL clock frequency
fSCL
0
100
0
400
kHz
Hold
time
(repeated)
START
condition. After this period, the first
clock pulse is generated
tHD-STA
4.0
-
0.6
-
μs
LOW period of the SCL clock
tLOW
4.7
-
1.3
-
μs
HIGH period of the SCL clock
tHIGH
4.0
-
0.6
-
μs
Set-up time for a repeated START
condition
tSU-STA
4.7
-
0.6
-
μs
Data set-up time
tSU-DAT
250
-
100
(1)
-
ns
Rise time of both SDA and SCL
signals
tr
-
1000
20 + 0.1Cb
(2)
300
ns
Fall time of both SDA and SCL
signals
tf
-
300
20 + 0.1Cb
(2)
300
ns
Set-up time for STOP condition
tSU-STO
4.0
-
0.6
-
μs
Bus-free time between a STOP and
START condition
tBUF
4.7
-
1.3
-
μs
Capacitive load for each bus line
Cb
-
400
-
400
pF
Noise margin at the LOW level for
each connected device (including
hysteresis)
VnL
0.1 VDD
-
0.1 VDD
-
V
Noise margin at the HIGH level for
each connected device (including
hysteresis)
VnH
0.2 VDD
-
0.2 VDD
-
V
1.
A Fast-mode I
2C-interface device can be used in a Standard-mode I2C-interface system, but the
requirement tSU;DAT > 250 ns must then be met. This will automatically be the case if the device does not
stretch the LOW period of the SCL signal.
If such a device does stretch the LOW period of the SCL signal, it must output the next data bit to the SDA
line; tr max + tSU;DAT = 1000 + 250 = 1250 ns (according to the Standard-mode I
2C -interface specification)
before the SCL line is released.
2.
Cb = total capacitance of one bus line in pF. If mixed with HS mode devices, faster fall-times are
allowed.
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