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SMS44 датащи(PDF) 11 Page - Summit Microelectronics, Inc. |
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SMS44 датащи(HTML) 11 Page - Summit Microelectronics, Inc. |
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11 / 16 page ![]() 11 2047 2.3 10/23/00 SMS44 SUMMIT MICROELECTRONICS, Inc. Table 8. Memory Operating Characteristics Input Data Protocol The protocol defines any device that sends data onto the bus as a “transmitter” and any device that receives data as a “receiver.” The device controlling data transmission is called the “master” and the controlled device is called the “slave.” In all cases the SMS44 will be a “slave” device, since it never initiates any data transfers. 2047 Table08 2.2 Figure 8. Memory Operating Characteristics One data bit is transferred during each clock pulse. The data on the SDA line must remain stable during clock high time, because changes on the data line while SCL is high will be interpreted as start or stop condition. tF tR tLOW tHIGH tHD:STA tSU:STA tBUF tDH tHD:DAT tSU:DAT tSU:STO SCL SDA In SDA Out tAA 2047 Fig08 2.1 l o b m y Sr e t e m a r a Ps n o i t i d n o C. n i M. x a Ms t i n U f L C S y c n e u q e r f k c o l c L C S 00 0 1z H k t W O L d o i r e p w o l k c o l C 7 . 4s µ t H G I H d o i r e p h g i h k c o l C 0 . 4s µ t F U B e m i t e e r f s u Bn o i s s i m s n a r t w e n e r o f e B7 . 4s µ t A T S : U S e m i t p u t e s n o i t i d n o c t r a t S 7 . 4s µ t A T S : D H e m i t d l o h n o i t i d n o c t r a t S 0 . 4s µ t O T S : U S e m i t p u t e s n o i t i d n o c p o t S 7 . 4s µ t A A t u p t u o d il a v o t e g d e k c o l C) n e l c y c ( A D S d il a v o t w o l L C S3 . 05 . 3s µ t H D e m i t d l o h t u O a t a De g n a h c A D S o t ) 1 + n e l c y c ( w o l L C S3 . 0s µ t R e m i t e s i r A D S d n a L C S 0 0 0 1s n t F e m i t ll a f A D S d n a L C S 0 0 3s n t T A D : U S e m i t p u t e s n I a t a D 0 5 2s n t T A D : D H e m i t d l o h n I a t a D 0s n I TA D S d n a L C S r e t li f e s i o Nn o i s s e r p p u s e s i o N0 0 1s n t R W e m i t e l c y c e t i r W 5s m |
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