Analog Integrated Circuit Device Data

4

Freescale Semiconductor

33793

PIN CONNECTIONS

PIN CONNECTIONS

Figure 3. 33793 Pin Connections

Table 2. 33793 Pin Definitions

A functional description of each pin can be found in the Functional Pin Description section beginning on page 10.

Pin Number

Pin Name

Pin Function

Formal Name

Definition

1

BUSRTN

Power

Bus Return

This pin provides the common return for power and signalling.

2

I/O0

Input/Output

Logic I/O

This pin can be used to provide a logic level output, a logic input, or an

analog-to-digital (A/D) input.

3, 5

AGND

Ground

Analog Ground

This pin is the low reference level and power return for the analog-to-

digital converter (ADC).

4

I/O1

Input/Output

Logic I/O

This pin can be used to provide a logic level output, a logic input, or an

A/D input.

6

I/O3

Input/Output

Logic I/O

This pin can be used to provide a logic level output, a logic input, or an

A/D input.

7, 10, 13, 15

NC

No Connect

No Connect

These pins have no internal connections.

8

I/O2

Input/Output

Logic I/O

This pin can be used to provide a logic level output, a logic input, or an

A/D input.

9

LOGOUT

Output

Logic Out

This is a logic output with higher pull-up drive capability than the standard

logic I/O.

11

REGOUT

Output

Regulator Output

This pin provides a regulated 5.0 V output. The power is derived from the

bus.

12

H_CAP

Output

Holding Capacitor

A capacitor attached to this pin is charged by the bus during bus idle and

supplies current to run the device and for external devices via the

REGOUT pin during non-idle periods.

14

BUSIN

Input

DSI Bus Input

This pin attaches to the bus and responds to initialization commands.

16

BUSOUT

Output

DSI Bus Output

This pin attaches to the bus and responds to reverse initialization

commands.

LOGOUT

BUSOUT

NC

BUSIN

NC

H_CAP

NC

REGOUT

I/O2

BUSRTN

I/O0

AGND

I/O1

AGND

NC

I/O3

8

2

3

4

5

7

6

9

16

15

14

13

12

10

11

1