I2C TIMING SPECIFICATIONS (AD7879-1/AD7889-1)
參數(shù)資料
型號: EVAL-AD7879EBZ
廠商: Analog Devices Inc
文件頁數(shù): 38/41頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7879
標準包裝: 1
主要目的: 接口,觸摸屏控制器
嵌入式:
已用 IC / 零件: AD7879
主要屬性: 4 線電阻式觸控屏控制器,I²C 和 SPI 接口
次要屬性: 圖形用戶界面,USB 接口
已供物品: 板,線纜,CD,觸控屏
AD7879/AD7889
Rev. C | Page 5 of 40
I2C TIMING SPECIFICATIONS (AD7879-1/AD7889-1)
VCC = 1.6 V to 3.6 V, TA = 40°C to +85°C, unless otherwise noted. Sample tested at 25°C to ensure compliance. All input signals are
timed from a voltage level of 1.4 V.
Table 3.
Parameter1
Limit
Unit
Description
fSCL
400
kHz max
t1
0.6
s min
Start condition hold time, tHD; STA
t2
1.3
s min
Clock low period, tLOW
t3
0.6
s min
Clock high period, tHIGH
t4
100
ns min
Data setup time, tSU; DAT
t5
300
ns min
Data hold time, tHD; DAT
t6
0.6
s min
Stop condition setup time, tSU; STO
t7
0.6
s min
Start condition setup time, tSU; STA
t8
1.3
s min
Bus-free time between stop and start conditions, tBUF
tR
300
ns max
Clock/data rise time
tF
300
ns max
Clock/data fall time
1
Guaranteed by design; not production tested.
07667-
003
SCL
SDA
tR
tF
t2
t5
t1
t3
t4
STOP START
STOP
START
t7
t6
t1
t8
Figure 3. Detailed I2C Timing Diagram
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