© 2005 Microchip Technology Inc.

DS21388C-page 5

TC1322

2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1:

PIN FUNCTION TABLE

Pin Number

Symbol

Type

Description

1

Input

2

SDA

Bi-Directional

Bi-directional. Serial data is transferred on the SMBus in both directions

using this pin.

3

SCL

Input

Input. SMBus serial clock. Clocks data into and out of the TC1322.

4

GND

Power

Ground.

5

Output

Output. Buffered DAC output voltage. This voltage is a function of the

reference voltage and the contents of the DATA register.

6

NC

None

No connection.

7

DAC-OUT

Output

Output. Unbuffered DAC output voltage. This voltage is a function of the ref-

erence voltage and the contents of the DATA register. This output is

unbuffered and care must be taken that the pin is connected only to a

high-impedance node.

8

Power

Input. Positive power supply input. See electrical specifications.