ADS7820 Burr-Brown Corporation, ADS7820 Datasheet - Page 8

• Manufacturer Part Number: ADS7820
• Description: 12-Bit 10ms Sampling CMOS ANALOG-to-DIGITAL CONVERTER
• Manufacturer: Burr-Brown Corporation

FIGURE 3. Conversion Timing with Outputs Enabled after Conversion (CS Tied LOW.)
FIGURE 4. Using CS to Control Conversion and Read Timing.
FIGURE 5. Using CS and BYTE to Control Data Bus.
DATA BUS
®
MODE
BUSY
R/C
ADS7820
DATA BUS
MODE
BUSY
R/C
CS
Data Valid
Previous
Acquire
Pins 15 - 22
Acquire
Pins 6 - 13
BYTE
R/C
CS
t
t
3
9
t
12
t
t
1
6
Hi-Z
Hi-Z
t
3
t
6
t
1
Convert
Hi-Z
t
t
12
7
Hi-Z State
t
12
t
Convert
14
High Byte
t
Low Byte
4
t
11
Data Valid
Previous
8
t
t
7
t
13
2
t
4
t
14
High Byte
Low Byte
Not Valid
t
12
Acquire
t
12
t
14
Data Valid
Acquire
Data Valid
t
9
t
8
Hi-Z
Hi-Z
t
10
t
5
t
t
12
9
Hi-Z State
Hi-Z
Convert
Data Valid