MCP48FVB08 datasheet(49/112 Pages) MICROCHIP

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DS20006362A-page 49

MCP48FXBX4/8

3.0

PIN DESCRIPTIONS

Overviews of the pin functions are provided in

Section 3.1 “Positive Power Supply Input Pin

(VDD)” through Section 3.10 “No Connect Pin (NC)”.

The descriptions of the pins for the quad DAC output

devices are listed in Table 3-1 and descriptions for the

octal DAC output devices are listed in Table 3-2.

TABLE 3-1:

MCP48FXBX4 (QUAD DAC) PIN FUNCTION TABLE

Description

20-Lead

TSSOP

20-Lead

VQFN

Symbol

I/O

Buffer

Type

119

LAT1

DAC Register Latch Pin. The Latch 1 pin allows the value in the

volatile DAC1/DAC3 registers (wiper and Configuration bits) to

be transferred to the DAC1/DAC3 outputs (VOUT1, VOUT3).

220

VDD

—

Supply Voltage Pin

SPI Chip Select Pin

VREF0

Analog Voltage Reference Input 0 Pin

VOUT0

Analog Buffered Analog Voltage Output – Channel 0 Pin

VOUT2

Analog Buffered Analog Voltage Output – Channel 2 Pin

7, 8, 10,

11, 12, 13

5, 6, 8, 9,

10,11

—

Not internally connected

VSS

—

Ground Reference Pin for all circuitries on the device

VOUT3

—

Buffered Analog Voltage Output – Channel 3 Pin

VOUT1

—

Buffered Analog Voltage Output – Channel 1 Pin

VREF1

Analog Voltage Reference Input 1 Pin

SDO

—

SPI Serial Data Output Pin

SCK

SPI Serial Clock Pin

SDI

SPI Serial Data Input Pin

LAT0/HVC

DAC Register Latch/High-Voltage Command Pin. The Latch 0

pin allows the value in the volatile DAC0/DAC2 registers (wiper

and Configuration bits) to be transferred to the DAC0/DAC2

outputs (VOUT0, VOUT2). The High-Voltage Command (HVC)

allows user Configuration bits to be written.

—

Exposed Thermal Pad Pin(1)

Note 1:

A = Analog, ST = Schmitt Trigger, HV = High Voltage, I = Input, O = Output, I/O = Input/Output,

P= Power.

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