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Número de pieza
componentes Descripción
HT9480(1998) Ver la hoja de datos (PDF) - Holtek Semiconductor
Número de pieza
componentes Descripción
Fabricante
HT9480
(Rev.:1998)
Pager Controller
Holtek Semiconductor
HT9480 Datasheet PDF : 57 Pages
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HT9480
Symbol
Parameter
Test Conditions
V
DD
Conditions
I
OL
PC0~PC1 Sink Current
3V V
OL
=0.3V
I
OH
PC0~PC1 Source Current
if Pull-High Mask Option
3V V
OH
=2.7V
I
OL
BS1, BS2, BS3, FOUT Sink
Current
3V
V
OL
=0.3V
I
OH
BS1, BS2, BS3, FOUT
Source Current
3V V
OH
=2.7V
R
PH
Pull-High I/O Port
Resistance
3V
—
Min. Typ. Max. Unit
1.7 3.4 — mA
–1 –1.9 — mA
350 — —
µ
A
–0.9 — — mA
100 200 500 k
Ω
A.C. Characteristics
(Ta=25
°
C)
Symbol
Parameter
f
SYS1
f
SYS2
f
SUBSYS
System Clock (RC OSC)
System Clock (Crystal OSC)
Pager Subsystem Clock
(Crystal OSC)
Test Conditions
V
DD
Conditions
3V
—
3V
—
Min.
76.8
76.8
Typ. Max. Unit
256 1000 kHz
256 1000 kHz
3V
—
32.768 76.8 153.6 kHz
f
TIMER
Timer I/P Frequency (TMR1)
3V
—
t
RES
External Reset Low Pulse Width —
—
t
INT
Interrupt Pulse Width
—
—
0
— 1000 kHz
1
—
—
µ
s
1
—
—
µ
s
* Note: t
SYS
=1/f
SYS
6
23th Feb ’98
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