M38047F9HKP datasheet(346/387 Pages) RENESAS

No. de pieza	M38047F9HKP

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]

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346 / 387 page

3-56

REJ09B0212-0100Z

Rev.1.00

Jan 14, 2005

3804 Group (Spec.H)

APPENDIX

3.5 Control registers

Fig. 3.5.9 Structure of I2C control register

I2C control register

b7 b6 b5 b4 b3 b2 b1 b0

I2C control register

(S1D: address 001416)

Name

Functions

At reset R W

3 I

2C-BUS interface

enable bit (ES0)

Data format

selection bit (ALS)

0: Addressing format

1: Free data format

0: 7-bit addressing format

1: 10-bit addressing format

Addressing format

selection bit

(10BIT SAD)

I2C-BUS interface pin

input level selection

bit (TISS)

0: Disabled

1: Enabled

0 0 0: 8

0 0 1: 7

0 1 0: 6

0 1 1: 5

1 0 0: 4

1 0 1: 3

1 1 0: 2

1 1 1: 1

0: SMBUS input

1: CMOS input

b2b1b0

Bit counter

(Number of

transmit/receive

bits)

(BC0, BC1, BC2)

Nothing is arranged for this bit. This is a write

disabled bit. When this bit is read out, the

contents are “0”.

Note: Do not use the read-modify-write instruction because some bits

change by hardware when the start condition is detected and

the byte-transfer is completed.

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