參數(shù)資料
型號(hào): M38514E6-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 4 MHz, MICROCONTROLLER, PDIP42
封裝: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁(yè)數(shù): 85/91頁(yè)
文件大?。?/td> 1161K
代理商: M38514E6-XXXSP
Rev.1.01
Oct 15, 2003
page 86 of 89
3851 Group (Built-in 24 KB or more ROM)
Fig. 79 Circuit for measuring output switching characteristics (1)
Symbol
Parameter
Unit
MULTI-MASTER I2C-BUS BUS LINE CHARACTERISTICS
Table 36 Multi-master I2C-BUS bus line characteristics
Bus free time
Hold time for START condition
Hold time for SCL clock = “0”
Rising time of both SCL and SDA signals
Data hold time
Hold time for SCL clock = “1”
Falling time of both SCL and SDA signals
Data setup time
Setup time for repeated START condition
Setup time for STOP condition
tBUF
tHD;STA
tLOW
tR
tHD;DAT
tHIGH
tF
tSU;DAT
tSU;STA
tSU;STO
Min.
Max.
Min.
Max.
s
ns
s
ns
s
Standard clock mode
High-speed clock mode
Note: Cb = total capacitance of 1 bus line
4.7
4.0
4.7
0
4.0
250
4.7
4.0
1000
300
1.3
0.6
1.3
20+0.1Cb
0
0.6
20+0.1Cb
100
0.6
300
0.9
300
Test conditions
Fig. 80
Fig. 78 Timing diagram of multi-master I2C-BUS
Fig. 80 Circuit for measuring output switching characteristics (2)
tBUF
tHD:STA
tHD:DTA
tLOW
tR
tF
tHIGH
tsu:DAT
tsu:STA
tHD:STA
tsu:STO
SCL
p
S
Sr
p
SDA
Measurement output pin
100 pF
CMOS output
N-channnel open-drain
1 k
Measurement output pin
100 pF
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