參數(shù)資料
型號: M37512F8HHP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PQFP48
封裝: 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48
文件頁數(shù): 82/87頁
文件大?。?/td> 879K
代理商: M37512F8HHP
Feb 18, 2005
page 83 of 85
REJ03B0122-0101
7512 Group
Measurement output pin
100pF
CMOS output
Fig. 82 Circuit for measuring output switching characteristics (1)
Symbol
Parameter
Unit
MULTI-MASTER I2C-BUS BUS LINE CHARACTERISTICS
Table 34 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
Fig. 81 Timing diagram of multi-master I2C-BUS
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
(Note)
0
0.6
20+0.1Cb
(Note)
100
0.6
300
0.9
300
tBUF
tHD:STA
tHD:DAT
tLOW
tR
tF
tHIGH
tsu:DAT
tsu:STA
tHD:STA
tsu:STO
SCL
P
S
Sr
P
SDA
S : START condition
Sr : RESTART condition
P : STOP condition
Fig. 83 Circuit for measuring output switching characteristics (2)
Measurement output pin
100pF
N-channel open-drain output
1k
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