Rainbow Electronics MAX6900 - Manual (Page 11)

MAX6900
I
2
C-Compatible RTC in a TDFN
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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
A
S
1
ADDR.
0A
S
R
ADDRESS/COMMAND BYTE
S
P
SINGLE WRITE SINGLE READ BURST WRITE BURST READ
BIT 7…………….……….BIT 0 ACK BIT
BIT 7………….…………BIT 0
ACK BIT
BIT 7…………….……………BIT 0 ACK BIT
8_BIT DATA
/AM
BIT 7…….…………BIT 0 ACK BIT
7-BIT SLAVE ID
0A
S
1
1
ADDR.
AS
S
R
7-BIT SLAVE ID
1A
S
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
AS
7-BIT SLAVE ID
0
A
S
0
11111
1
A
S
LAST 8_BIT DATA
AS
P
S
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
A
S
1
11111
1
A
S
7-BIT SLAVE ID
1
A
S
FIRST 8_BIT DATA
AM
BIT 7…………….…………… BIT 0 ACK BIT
ADDRESS/COMMAND BYTE
S
S
P