Integrated Circuits Inc. aIVR1004/2104/4208

Oct 12, 2009

3

PIN CONFIGURATIONS

PIN DESCRIPTIONS

Pin Names

Description

VOUT1

PWM output to drive speaker directly

VOUT2_COUT

PWM output or COUT DAC output select by programmable option

VSS

Power Ground

OSC

Oscillator input

VDDA

Positive Power Supply

VDD

Positive Power Supply

PBn

Programmable I/O pins (n: 0 to 3 for all aIVR chips)

PCn

Programmable I/O pins (n: 0 to 3 for aIVR4208 only)

RSTB

Reset pin, Low active

Note:

PBn and PCn are software programmable I/O pins that can be set to different configurations such as

pure input, input with pull-up, input with pull-down and output. The programmable I/O pins set up

will take effect immediately after chip RESET is applied.