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Serial Interface
13-23
• Resend the start sequence (D) according to the procedure described below.
(Refer to Fig. 13-2-16.)
(1) SBO pin setting
Set the SBO pin as a general-purpose input port.
When the pin switches to a general-purpose input port, SDA goes high.
(2) SBT pin setting
Set the SBT pin as a general-purpose input port.
When the pin switches to a general-purpose input port, SCL goes high.
(3) Control register setting
Disable the transmission operation and the reception operation.
(Set SC0TXE and SC0RXE to "0".)
Set the I2C mode selection flag to "0".
(4) I/O port setting
Set the I/O ports to SBT and SBO.
(5) Transmission/reception enable
Enable the transmission operation and the reception operation.
(Set SC0TXE and SC0RXE to "1".)
(6) Start sequence resend
Set the I2C mode selection flag to "1".
A low signal is output on the SBO pin, and the start sequence is sent.
At this point, normal transmission/reception is now possible.
Fig. 13-2-16 Timing Chart (12)
bp0
Ack
bp7
bp6
(1)
(2)
(3)
(6)
(4), (5)
(D)
SBO pin
(SDA)
SBT pin
(SCL)
SC0IIC flag
Data write
SC0TXF flag
Interrupt request
(set to “transmission
end”)
Start sequence resend
Summary of Contents for MN103001G/F01K
Page 1: ...MICROCOMPUTER MN1030 MN103001G F01K LSI User s Manual Pub No 23101 050E ...
Page 2: ......
Page 4: ......
Page 6: ......
Page 8: ......
Page 9: ...Table of Contents List of Figures and Tables 0 ...
Page 26: ...xviii ...
Page 27: ...1 0 1 General Specifications ...
Page 35: ...2 CPU 2 ...
Page 57: ...3 Extension Instruction Specifications 3 ...
Page 96: ...Extension Instruction Specifications 3 40 ...
Page 97: ...4 Memory Modes 3 4 ...
Page 102: ...Memory Modes 4 6 ...
Page 103: ...5 Operating Mode 5 ...
Page 107: ...6 Clock Generator 6 13 ...
Page 111: ...7 Internal Memory 7 ...
Page 114: ...Internal Memory 7 4 ...
Page 115: ...8 Bus Controller BC 8 ...
Page 189: ...9 Interrupt Controller 9 ...
Page 220: ...Interrupt Controller 9 32 ...
Page 221: ...10 8 bit Timers 9 10 ...
Page 254: ...8 bit Timers 10 34 ...
Page 255: ...11 16 bit Timers 11 ...
Page 292: ...16 bit Timers 11 38 ...
Page 293: ...12 Watchdog Timer 11 12 ...
Page 302: ...Watchdog Timer 12 10 ...
Page 303: ...13 Serial Interface 13 ...
Page 354: ...Serial Interface 13 52 ...
Page 355: ...14 A D Converter 14 ...
Page 367: ...15 I O Ports 15 ...
Page 431: ...16 Internal Flash Memory 16 ...
Page 439: ...17 17 Ordering Mask ROM ...
Page 442: ...Ordering Mask ROM 17 4 ...
Page 443: ...Appendix ...