HT84192 데이터 시트보기 (PDF) - Holtek Semiconductor

부품명

상세내역

제조사

HT84192

Magic Voice™

Holtek Semiconductor 

HT84XXX

The capability of the voice sampling rate for

various voice compression format.

fOSC

PCM8

m-law

PCM

AD4

4M

12kHz 11kHz 8kHz

5M

15kHz 14kHz 10kHz

6M

18kHz 16kHz 12kHz

8M

24kHz 22kHz 16kHz

Oscillator configuration

The HT84XXX series provides an RC oscillator

for the system clock. The system oscillator

stops in the standby state so as to reduce power

consumption.

For the oscillator circuit, an external resistor is

required between OSC and VSS. The oscillator

frequency is typically 4MHz for an external re-

sistor of 240kW. The RC type of oscillator offers

the most cost-effective solution, although the

frequency of the oscillation may vary with tem-

perature and the chip itself due to process vari-

ation.

fOSC ROSC HT84EVA HT84P00

IC

4M

180kW

240kW 240kW

5M

150kW

210kW 210kW

6M

120kW

180kW 180kW

8M

91kW

150kW 150kW

Mask options

The following options have to be defined to en-

sure a proper system functioning:

· Pull-high resistor: 33kW/98kW (3V)

· Keydebouncetime:0ms~255ms(fOSC=4MHz)

12

April 26, 2000

Share Link: