HD64F2149YV datasheet(542/1075 Pages) RENESAS

542 / 1075 page

Section 16 I

2C Bus Interface

Rev. 3.00 Jan 18, 2006 page 514 of 1044

REJ09B0280-0300

Bit 7

ESTP

Description

No error stop condition

(Initial value)

[Clearing conditions]

1. When 0 is written in ESTP after reading ESTP = 1

2. When the IRIC flag is cleared to 0

• In I2C bus format slave mode

Error stop condition detected

[Setting condition]

When a stop condition is detected during frame transfer

• In other modes

No meaning

Bit 6—Normal Stop Condition Detection Flag (STOP): Indicates that a stop condition has been

detected after completion of frame transfer in I

2C bus format slave mode.

Bit 6

STOP

Description

No normal stop condition

(Initial value)

[Clearing conditions]

1. When 0 is written in STOP after reading STOP = 1

2. When the IRIC flag is cleared to 0

• In I2C bus format slave mode

Normal stop condition detected

[Setting condition]

When a stop condition is detected after completion of frame transfer

• In other modes

No meaning

Bit 5—I

2C Bus Interface Continuous Transmission/Reception Interrupt Request Flag

(IRTR): Indicates that the I

2C bus interface has issued an interrupt request to the CPU, and the

source is completion of reception/transmission of one frame in continuous transmission/reception

for which DTC activation is possible. When the IRTR flag is set to 1, the IRIC flag is also set to 1

at the same time.

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