Integrated Circuits Inc.

aMTP777

MAY 10, 2011

3

PIN CONFIGURATION

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

VSSA

Analog Power Ground

OSC

Oscillator input

VDD

Positive Power Supply

VDDA

Analog Positive Power Supply

VPP

Positive Power for EPROM programming, NC during voice playback

PB0~PB3

Programmable I/O port B

PC0~PC3

Programmable I/O port C

PD0~PD2

Programmable I/O port D

PE0~PE3

Programmable I/O port E

PF0~PF3

Programmable Input port F

RSTB

Reset pin, Low active;

Note:

PB, PC, PD, PE and PF ports 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.

Pins for memory programming are: VDD, VDDA, VSS, VSSA, VPP, PB0, PB1, OSC, VOUT2

and RSTB.