HT9480 Ver la hoja de datos (PDF) - Holtek Semiconductor
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HT9480 Datasheet PDF : 47 Pages
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HT9480
Pin No
35~38
66
75
69
Pin Name
COM3~COM0
TSC
TS
BAL
70
DI
71
BS1
72
BS2
73
BS3
74
FOUT
I/O
Function
O Outputs for LCD panel common connections
I MCU test mode input pin, active low with pull-high resistor
I Decoder test mode input pin, active low with a pull-high resistor
I Battery low indication input, active high without pull-high resistor
I
POCSAG code input serial data (inverting or non-inverting as determined
by SPF32). CMOS input without pull-high resistor
O Pager receiver power control enable output, CMOS output
O RF dc level adjustment pin, CMOS output
O PLL control pin, CMOS output
Frequency reference output pin
O The FOUT output pin produces a 76.8kHz/153.6kHz signal with a 1/2 duty
cycle reference frequency if a 76.8kHz crystal is used.
Absolute Maximum Ratings
Supply Voltage .........................................-0.3V to 5.5V
Input Voltage..............................VSS-0.3V to VDD+0.3V
Storage Temperature ............................-50°C to 125°C
Operating Temperature...........................-25°C to 85°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.
D.C. Characteristics
Symbol
Parameter
Test Conditions
VDD
Conditions
Min.
VDD
Operating Voltage
¾ 3V application
2.4
IDD
Operating Current
3V No load, fsys=153.6kHz ¾
ISTB1 Standby Current 1
3V
No load, System HALT
(Watchdog ON)
¾
ISTB2 Standby Current 2
3V
No load, System HALT
(Watchdog OFF)
¾
VIL
Input Low Voltage for Input Port and I/O
Port
3V
¾
0
VIH
Input High Voltage for Input Port and I/O
Port
3V
¾
2.4
VIL1
Input Low Voltage (RES,TMR1,BAL) 3V
¾
0
VIH1 Input High Voltage (RES,TMR1,BAL) 3V
¾
2.4
VIL2
Input Low Voltage (BAF)
3V
¾
0
VIH2 Input High Voltage (BAF)
3V
¾
1.3
IOL
I/O Port Sink Current
3V VOL=0.3V
1.7
IOH
I/O Port Source Current
3V VOH=2.7V
-1
IOL
Segment 0-34 Output Sink Current
3V VOL=0.3V
20
IOH
Segment 0-34 Output Source Current 3V VOH=2.7V
-20
Typ.
3.0
300
200
¾
¾
¾
¾
¾
¾
¾
3.4
-1.9
44
-38
Ta=25°C
Max. Unit
3.3
V
¾
mA
¾
mA
1
mA
1
V
3
V
1
V
3
V
0.9
V
3
V
¾
mA
¾
mA
¾
mA
¾
mA
Rev. 1.20
4
July 31, 2002
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