ltc1272-8 Linear Technology Corporation, ltc1272-8 Datasheet - Page 14

• Manufacturer Part Number: ltc1272-8
• Description: 12-bit, 3?s, 250khz Sampling A/d Converter
• Manufacturer: Linear Technology Corporation

A
Table 4. ROM Mode, Parallel Read Data Bus Status
Data Outputs
First Read (Old Data)
Second Read
LTC1272
14
Table 3. Slow Memory Mode, Two Byte Read Data Bus Status
Data Outputs
First Read
Second Read
PPLICATI
TRACK
HOLD
HBEN
BUSY
DATA
RD
RD
CS
O
DB7
Low
U
D7
DB11
DB11
t
D11
S
8
t
1
t
TRACK
t
t
12
I FOR ATIO
3
HOLD
2
BUSY
DATA
U
RD
CS
DB10
DB10
D10
Figure 15. Slow Memory Mode, Two Byte Read Timing Diagram
DB6
Low
D6
OLD DATA
DB7-DB0
Figure 16. ROM Mode, Parallel Read Timing Diagram
t
CONV
W
t
1
DB9
DB9
D9
t
t
3
2
t
OLD DATA
DB11-DB0
4
t
DB5
Low
12
D5
DB8
DB8
D8
t
6
U
t
t
t
7
5
NEW DATA
CONV
DB7-DB0
DB7
DB7
D7
t
5
DB4
Low
t
t
7
D4
9
DB6
DB6
D6
t
11
t
10
t
1
t
t
3
2
D3/11
DB11
DB5
DB5
DB3
D5
t
NEW DATA
DB11-DB0
t
8
t
4
11
t
t
12
1
t
3
DB4
DB4
t
D4
t
7
t
5
CONV
t
NEW DATA
DB11-DB8
4
D2/10
DB10
DB2
D3/11
DB3
DB3
t
t
LTC1272 • TA18
5
7
t
9
t
10
D2/10
DB2
DB2
D1/9
DB1
DB9
LTC1272 • TA17
t
12
D1/9
DB1
DB1
D0/8
DB0
DB8
D0/8
DB0
DB0
1272fb
1272fb
1272fb