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M38044FFHKP Datasheet(PDF) 236 Page - Renesas Technology Corp

No. de pieza M38044FFHKP
Descripción Electrónicos  8-BIT CISC SINGLE-CHIP MICROCOMPUTER 740 FAMILY / 38000 SERIES
PDF  387 Pages
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Fabricante Electrónico  RENESAS [Renesas Technology Corp]
Página de inicio  http://www.renesas.com
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M38044FFHKP Datasheet(HTML) 236 Page - Renesas Technology Corp

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APPLICATION
2.5 Multi-master I2C-BUS interface
Rev.1.00 Jan 14, 2004
REJ09B0212-0100Z
3804 Group (Spec.H)
➄ Transmission of upper data
Confirm correct completion of the upper data transmission. The master returns the NACK toward
the transmitted second-byte data, the upper data. Accordingly, confirm that the last receive bit
(LRB bit; bit 0 of address 001316) is “1”.
After that, write dummy data to the I2C data shift register and wait for the interrupt of STOP
condition.
Fig. 2.5.33 Transmission process of upper data
End
S0 (address 001116)
← 111111112
Error end
0 (ACK)
LRB (address 001316), bit 0 ?
1 (NACK)
5
PIN (address 001316), bit 4 ?
1 (STOP condition)
0 (upper data transmission completed)
S1 (address 001316)
← 000100002
Note: Use the branch bit instruction to check bus busy.
• Judgment of bus hold
• ACK confirmation
• Slave receive mode set
• Dummy data write to I2C data shift register



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