Datasheet

18
LTC1273
LTC1275/LTC1276
127356fa
U
S
A
O
PP
L
IC
AT
I
WU
U
I FOR ATIO
OLD DATA
DB7-DB0
NEW DATA
DB11-DB8
TRACK
HOLD
DATA
BUSY
RD
CS
RD
LTC1272 • TA16
t
8
t
1
t
2
t
3
t
CONV
t
11
t
9
t
8
t
9
t
5
t
1
t
4
t
5
t
10
t
3
t
7
t
3
t
7
t
12
t
12
HBEN
t
7
t
4
t
1
t
8
t
9
NEW DATA
DB7-DB0
t
2
t
4
t
5
Figure 16. ROM Mode Two Byte Read Timing Diagram
Table 5. ROM Mode, Two Byte Read Data Bus Status
Data Outputs D7 D6 D5 D4 D3/11 D2/10 D1/9 D0/8
First Read (Old Data) DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Second Read (New Data) Low Low Low Low DB11 DB10 DB9 DB8
Third Read (New Data) DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
HOLD
t
12
t
7
TRACK
DATA
t
3
t
7
t
3
t
2
t
CONV
t
CONV
t
11
t
1
t
4
t
5
t
4
t
1
t
5
t
2
t
12
OLD DATA
DB11-DB0
NEW DATA
DB11-DB0
BUSY
RD
CS
LTC1273/75/76 • F15
Table 4. ROM Mode, Parallel Read Data Bus Status
Data Outputs D11 D10 D9 D8 D7 D6 D5 D4 D3/11 D2/10 D1/9 D0/8
First Read (Old Data) DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Second Read DB11 DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Figure 15. ROM Mode, Parallel Read Timing Diagram (HBEN = LOW)