Datasheet

71M6513/71M6513H

3-Phase Energy Meter IC

DATA SHEET

AUGUST 2011

A Maxim Integrated Products Brand

Note: Clock stretching and multi-master operation are not supported for the I

C interface.

Status

Bit

Name

Read/

Write

Reset

State

Polarity Description

7 ERROR R 0 Positive 1 when an illegal command is received.

6 BUSY R 0 Positive 1 when serial data bus is busy.

5 RX_ACK R 1 Negative 0 indicates that the EEPROM sent an ACK bit.

TX_ACK

Negative

0 indicates when an ACK bit has been sent to the EEPROM

3-0 CMD[3:0] W 0

Positive,

see CMD

Table

CMD Operation

0 No-op. Applying the no-op command will stop the I2C clock

(SCK, DIO4). Failure to issue the no-op command will keep

the SCK signal toggling.

2 Receive a byte from EEPROM and send ACK.

3 Transmit a byte to EEPROM.

5 Issue a ‘STOP’ sequence.

Receive the last byte from EEPROM and do not send ACK.

9 Issue a ‘START’ sequence.

Others No Operation, set the ERROR bit.

Table 56: EECTRL Status Bits