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M38045FFHKP датащи(PDF) 231 Page - Renesas Technology Corp

номер детали M38045FFHKP
подробное описание детали  8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  387 Pages
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производитель  RENESAS [Renesas Technology Corp]
домашняя страница  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

M38045FFHKP датащи(HTML) 231 Page - Renesas Technology Corp

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2-107
APPLICATION
2.5 Multi-master I2C-BUS interface
Rev.1.00 Jan 14, 2004
REJ09B0212-0100Z
3804 Group (Spec.H)
(3)
Communication example in slave device
The slave device follows the procedures ➀ to ➅ shown by Figure 2.5.28.
The only difference from the master device’s communication is an occurrence of interrupt request
after detection of STOP condition.
➀ Reception of START condition; Transmission of ACK bit due to slave address correspondence
➁ Reception of command
➂ Reception of RESTART condition; Reception of slave address + read bit
➃ Transmission of lower data
➄ Transmission of upper data
➅ Reception of STOP condition
Figures 2.5.29 to 2.5.34 show the procedures ➀ to ➅.
Fig. 2.5.28 Communication example as SMBUS slave device
A
Sr
A
P
R/W
A
R/W A
A
S
Master to slave
Slave to master
S: START condition
A: ACK bit
Sr: RESTART condition
P: STOP condition
R/W: Read/Write bit
➂➃➄ ➅
Slave address
7 bits
“0”
8 bits
7 bits
8 bits
8 bits
“1”
Slave address
Command
Interrupt requestInterrupt request
Interrupt request
Interrupt requestInterrupt request
Lower data
Upper data
Interrupt
request
Write
Read



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