HT95C30P datasheet(6/50 Pages) HOLTEK

6 / 50 page

Pin Name

I/O

Description

Peripherals

DTMF

This pin outputs dual tone signals to dial out the phone number. The load resistor should

not be less than 5k

MUSIC

This pin outputs the single tone that generated by the PFD generator.

TIP

Input pin connected to the tip side of the twisted pair wires. It is internally biased to 1/2

VDD when the device is in power-up mode. This pin must be DC isolated from the line.

RING

Input pin connected to the ring side of the twisted pair wires. It is internally biased to 1/2

VDD when the device is in power-up mode. This pin must be DC isolated from the line.

RDETI

This pin detects ring energy on the line through an attenuating network.

RTIME

I/O

Schmitt trigger input and NMOS output pin which functions with RDETI pin to make an

RC network that performs ring detection function.

LBIN

This pin detects battery low through external R1/R2 to determine threshold voltage.

Absolute Maximum Ratings

Supply Voltage ........................................

-0.3V to 5.5V

Storage Temperature ...........................

-50°Cto125°C

Input Voltage .............................. VSS

-0.3 to VDD+0.3V

Operating Temperature ..........................

-25°Cto70°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

cause substantial damage to the device. Functional operation of this device at other conditions beyond those

listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-

ity.

Electrical Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

VDD

Conditions

CPU

IIDL

Idle Mode Current

32768Hz off, 3.58MHz off,

CPU off, LCD off, WDT off,

no load

¾¾

ISLP

Sleep Mode Current

32768Hz on, 3.58MHz off,

CPU off, LCD off, WDT off,

no load

¾¾

IGRN

Green Mode Current

32768Hz on, 3.58MHz off,

CPU on, LCD off, WDT off,

no load

¾¾

INOR

Normal Mode Current

32768Hz on, 3.58MHz on,

CPU on, LCD on, WDT on,

DTMF generator off,

FSK decoder off, no load

¾¾

3mA

VIL

I/O Port Input Low Voltage

VIH

I/O Port Input High Voltage

IOL

I/O Port Sink Current

IOH

I/O Port Source Current

¾-2

-3

RPH

Pull-high Resistor

VLBIN

Low Battery Detection

Reference Voltage

1.10

1.15

1.20

HT95C200/20P/300/30P

Rev. 0.10

October 1, 2002

Preliminary

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