PT8A977P Datasheet, PDF (7/12 Pages) Pericom Semiconductor Corporation – 5-Function Remote Controller

Data Sheet
PT8A977P/977W/978P/978LW
5-Function Remote Controller
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AC Electrical Characteristics
AC Electrical Characteristics of 977P/977W
Parameters
Description
Test Condition
Min. Type Max. Units
fOSC Oscillator Frequency *
TA= 25°C, R = 200 kW
102
128 154
kHz
f_max-f_min Oscillator Frequency Fluctuation - 977P/977W TA=25°C, V_CC= 2.5 ~ 5V
tFUN Cycle Time of Function Code
fOSC = 102 to 154 kHz
15
kH z
0.8
1
1.2
ms
tSTA Cycle Time of Start Code
fOSC = 102 to 154 kHz
1.6
2
2.4
ms
fCSC Carrier Frequency of SC Pin
fOSC = 102 to 154 kHz
51
64
77
kHz
tOFF Time of Auto-Power-Off **
Pins 1, 4, 5, 6 and 14 are High.
6.4
8
Any of pins 1, 4, 5, 6 or 14 is Low. 3.2
4
9.6
s
4.8
min.
Note: Over the Operating Rating, 0°C £ T £ 70°C, V = 4V
A
CC
* The relative error between the frequencies of the two on-chip oscillators in the PT8A977P (or 977W) and PT8A978P (or
978LW) must be less than ±25%.
** When adjust the external oscillator resistor, the auto-power-off time will vary relevantly.
AC Electrical Characteristics of 978P/978LW
Parameters
fOSC
f_max-f_min
VSI
tFUN
tSTA
Description
Oscillator Frequency *
Oscillator Frequency Fluctuation - 978P
Oscillator Frequency Fluctuation - 978LW
SI Pin Receive Sensitivity (VPP)
Cycle Time of Function Code
Cycle Time of Start Code
Test Condition
TA= 25°C, R = 200 kW
TA=25°C, V_CC=2.5 ~ 5V
TA=25°C,
V =2.0
CC
~
5V
Guaranteed Effective Decoding
fOSC = 128 kHz
fOSC = 128 kHz
Min.
102
300
0.75
1.5
Type
128
1
2
Max.
154
15
10
1.25
2.5
Units
kH z
kH z
kH z
mV
ms
ms
Note: Over the Operating Rating, 0°C £ T_A £ 70°C, V_CC = 4V
* The relative error between the frequencies of the two on-chip oscillators in the PT8A977P (or 977W) and PT8A978P (or
978LW) must be less than ±25%.
PT0074(10/01)
7
Ver:1