Datasheet

V850ES/JG3 CHAPTER 17 I
2
C BUS
R01UH0015EJ0300 Rev.3.00 Page 548 of 870
Sep 30, 2010
(3/3)
STDn Start condition detection
0 Start condition was not detected.
1 Start condition was detected. This indicates that the address transfer period is in effect
Condition for clearing (STDn bit = 0) Condition for setting (STDn bit = 1)
• When a stop condition is detected
• At the rising edge of the next byte’s first clock
following address transfer
• Cleared by LRELn bit = 1 (communication save)
• When the IICEn bit changes from 1 to 0 (operation
stop)
• After reset
• When a start condition is detected
SPDn Stop condition detection
0 Stop condition was not detected.
1 Stop condition was detected. The master device’s communication is terminated and the bus is
released.
Condition for clearing (SPDn bit = 0) Condition for setting (SPDn bit = 1)
• At the rising edge of the address transfer byte’s first
clock following setting of this bit and detection of a
start condition
• When the IICEn bit changes from 1 to 0 (operation
stop)
• After reset
• When a stop condition is detected
Remark n = 0 to 2