Pad No.

Pad Name

I/O

Internal

Connection

Description

18~20

CAS1B~

CAS3B

O

CMOS

Column address strobe for DRAM1~DRAM3

21

LEDB

O

Open Drain

NMOS

Status indicator when LSI is active

22

PLYB

I

Pull-High

Play/Pause trigger input (toggle function)

23

RECB

I

Pull-High

Record/Pause trigger input (toggle function)

24

RESB

I

Pull-High

Reset the system or the play counter

25

WRB

O

CMOS

Write enable signal output for DRAM interface

26

RASB

O

CMOS

Row address strobe output for DRAM interface

27

DATA

I/O

—

Encoded data I/O pin

28

29

OSC2

OSC1

O

I

—

Oscillation external resistor connect pin

Absolute Maximum Ratings

Supply Voltage .................................. –0.3 to 6V

Storage Temperature ............... –50

Operating Temperature ............. –20

Electrical Characteristics

(Ta=25°C)

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

Condition

Operating Voltage

—

—

4.5

5.0

5.5

V

Operating Current

5V

No load,

—0.8

2.0

mA

Stand-By Current

5V

—

—

40

100

LED Sink Current

5V

3.0

5.0

—

mA

“H” Input Voltage

—

—

V

“L” Input Voltagse

—

—

0

—

V

System Frequency

5V

—

384

—

KHz

Max. Vout Output Voltage

5V

1.5

—

—

HT8658/HT8659

4

26th Sep ’96