Manual

MAX6900
I
2
C-Compatible RTC in a TDFN
______________________________________________________________________________________ 11
Table 3. Data Transfer Summary
BIT 7…………….……………… BIT 0 ACK BIT BIT 7…………….…………………BIT ACK BIT
8_BIT DATA AS
BIT 7…….…….…………BIT 0 ACK BIT
7-BIT SLAVE ID 0 AS 1
ADDR.
0ASR
ADDRESS/COMMAND BYTE
S P
SINGLE WRITE SINGLE READ BURST WRITE BURST READ
BIT 7…………….……….BIT 0 ACK BIT
BIT 7………….…………BIT 0 ACK BITBIT 7…………….……………BIT 0 ACK BIT
8_BIT DATA
/AM
BIT 7…….…………BIT 0 ACK BIT
7-BIT SLAVE ID
0AS 1 1
ADDR.
AS S
R
7-BIT SLAVE ID
1AS
ADDRESS/COMMAND BYTE
S P
FIRST 8_BIT DATA
BIT 7…………….…………BIT 0 ACK BIT
BIT 7…………….…………BIT 0 ACK BIT
BIT 7…………….………BIT 0 ACK BIT BIT 7…………….……………BIT 0 ACK BIT
ADDRESS/COMMAND BYTE
AS7-BIT SLAVE ID 0 AS 0111111 AS LAST 8_BIT DATA AS PS
BIT 7……….……………BIT 0 ACK BIT
BIT 7……….…………………BIT 0 ACK BIT
LAST 8_BIT DATA /AM
SLAVE ID: 1010000 ADDR: 5-BIT RAM OR REGISTER ADDRESS R: RAM/REGISTER SELECTION BIT. R = 0 WHEN REGISTER IS SELECTED, R = 1 WHEN RAM IS SELECTED S: 2-WIRE BUS START CONDITION BY MASTER P: 2-WIRE BUS STOP CONDITION BY MASTER AS: ACKNOWLEDGE BY SLAVE AM: ACKNOWLEDGE BY MASTER /AM: NO ACKNOWLEDGE BY MASTER
BIT 7…………….………… BIT 0 ACK BIT
7-BIT SLAVE ID
0 AS 1 11111 1 AS 7-BIT SLAVE ID 1 AS FIRST 8_BIT DATA AM
BIT 7…………….…………… BIT 0 ACK BIT
ADDRESS/COMMAND BYTE
S
S
P