参数资料
型号: TAS3204PAGR
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封装: GREEN, PLASTIC, TQFP-64
文件页数: 42/76页
文件大小: 1224K
代理商: TAS3204PAGR
SDA
SCL
tf
tSU-DAT
tHD-STA
tr
tBUF
tSU-STO
P
S
tSP
tSU-STA
Sr
tHIGH
tHD-DAT
tLOW
tr
tHD-STA
S
tf
T0114-01
External
Microcontroller
V
I(SDA)
DVDD
I
P
I
P
V
I(SCL)
SDA
R
P
R
P
SCL
TAS3204
External
Microcontroller
V
I
DVDD
I
P
SDA
or
SCL
R
S
(2)
V
S
(1)
R
S
(2)
R
P
www.ti.com
SLES197C – APRIL 2007 – REVISED MARCH 2011
NOTE
SDA does not have the standard I
2C specification 300-ns internal hold time. SDA must be
valid by the rising and falling edges of SCL.
Figure 11-6. Start and Stop Conditions Timing Waveforms
11.11.1 Recommended I
2C Pullup Resistors
It is recommended that the I2C pullup resistors RP be 4.7 k (see Figure 11-7). If a series resistor is in the
circuit (see Figure 11-8), then the series resistor RS should be less than or equal to 300 .
Figure 11-7. I2C Pullup Circuit (With No Series Resistor)
(1)
VS = DVDD × RS/(RS – RP). When driven low, VS << VIL requirements.
(2)
RS ≤ 300
Figure 11-8. I2C Pullup Circuit (With Series Resistor)
Copyright 2007–2011, Texas Instruments Incorporated
Electrical Specifications
47
Product Folder Link(s): TAS3204
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