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Access Cycle B

Shift in New Multiplexer Address,

Simultaneously Shift Out Previous

Conversion Value

Sample Cycle B

A/D Conversion

Interval

Initialize

Initialize

MSB

LSB

Previous Conversion Data

MSB

LSB

B7

B6

B5

B4

C7

B11

A11

A10

A9

A8

A7

A6

A5

A4

A1

A0

Hi-Z State

1

2

3

4

5

6

7

8

11

12

1

I/O

CLOCK

DATA

OUT

DATA

INPUT

CS

EOC

(see Note A)

B3

B2

B1

B0

Access Cycle B

Shift in New Multiplexer Address,

Simultaneously Shift Out Previous

Conversion Value

Sample Cycle B

A/D Conversion

Interval

Initialize

MSB

LSB

Previous Conversion Data

MSB

LSB

B7

B6

B5

B4

C7

B11

A11

A10

A9

A8

A7

A6

A5

A4

A1

A0

Low Level

1

2

3

4

5

6

7

8

11

12

1

I/O

CLOCK

DATA

OUT

DATA

INPUT

CS

EOC

Initialize

(see Note A)

B3

B2

B1

B0

TLC2543-EP

12-BIT ANALOG-TO-DIGITAL CONVERTER

WITH SERIAL CONTROL AND 11 ANALOG INPUTS

SGLS125A – JULY 2002 – REVISED NOVEMBER 2006

A.

To minimize errors caused by noise at CS, the internal circuitry waits for a setup time after CS

↓ before responding to

control input signals. Therefore, no attempt should be made to clock in an address until the minimum CS setup time

has elapsed.

Figure 9. Timing for 12-Clock Transfer Using CS With MSB First

A.

To minimize errors caused by noise at CS, the internal circuitry waits for a setup time after CS

↓ before responding to

control input signals. Therefore, no attempt should be made to clock in an address until the minimum CS setup time

has elapsed.

Figure 10. Timing for 12-Clock Transfer Not Using CS With MSB First

9

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