HT9302_09 Datasheet, PDF (1/33 Pages) Holtek Semiconductor Inc – 1-Memory/2-Memory Tone/Pulse Dialer

HT9302 Series
1-Memory/2-Memory Tone/Pulse Dialer
Features
Patent Number: 64097, 86474, 64529, 113235 (R.O.C.)
5424740 (U.S.A.)
· Universal specification
· Operating voltage: 2.0V~5.5V
· Low standby current
· Low memory retention current: 0.1mA (typ.)
· Tone/pulse switchable
· Interface with LCD driver
· 32 digits for redialing
· 32 digits for SA memory dialing
· One-key redialing
· Pause and P®T key for PBX
· 4´4 keyboard matrix
· 3.58MHz crystal or ceramic resonator
· Hand-free control
· Hold-line control
· Pause, P®T can be saved for redialing
· Lock function
· Resistor options
- M/B ratio
- Flash function and flash time
- Pause and P®T duration
- Pulse number
· HT9302A: 18-pin DIP package
HT9302B: 22-pin SKDIP package
HT9302C: 20-pin DIP package
HT9302D: 24-pin SKDIP package
HT9302G: 16-pin DIP/NSOP packages
General Description
The HT9302 series tone/pulse dialers are CMOS LSIs
for telecommunication systems. They are designed to
meet various dialing specifications through resistor op-
tion matrix.
The HT9302 series provide the pin-selected lock func-
tion, Hold-line, Hand-free and LCD dialing number
display interface, all of which are suitable for feature
phone applications. HT9302G is simpler than HT9302X
version. It provides only a redialing memory for simple
low-cost system applications.
Selection Table
Function
Part No.
HT9302x
Lock Function
(Pin Selection)
HT9302A
Ö
HT9302B
Ö
HT9302C
Ö
HT9302D
Ö
HT9302G
HT9302G
¾
Hold Line
Hand Free
LCD Interface
Package
(Normal version)
¾
¾
Ö
Ö
¾
¾
Ö
Ö
(Simple version)
¾
¾
¾
18 DIP
¾
22 SKDIP
Ö
20 DIP
Ö
24 SKDIP
¾
16 DIP/NSOP
Rev. 1.30
1
May 13, 2009