PT8A977B Datasheet, PDF (7/11 Pages) Pericom Semiconductor Corporation – PT8A977B/9781 5-Function Remote Controller for 1V Micro Cars

Data Sheet
PT8A977B/9781 5-Function Remote
Controller for 1V Micro Cars
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DC Electrical Charateristics of 9781
Sym
Description
Test Conditions
Min. Type Max. Unit
V_CC Operating Voltage
1.0
1.2
1.5
V
I_CC Supply Current
Output load *
-
-
3.0 mA
V_OH1 Output High Level1
Forward,Backward, (I_OH1=-150uA) V_CC-0.2
-
-
V
V_OL1 Output Low Level1
Forward,Backward,(I_OL1=4mA)
-
-
0.2
V
V_OH2 Output High Level2
Left, Right, FOUT, (I_OH2=-1mA)
V_CC-0.2
-
-
V
V_OL2 Output Low Level2
I_OH1 Output High Current1
Left, Right, FOUT, (I_OL2=150uA)
Forward,Backward, ( V_OUT=V_CC-
0.2V)
-
-
0.2
V
-150
-
-
uA
I_OL1 Output Low Current1
I_OH2 Output High Current2
Forward,Backward, (V_OUT=0.2V)
Left, Right, FOUT ( V_OUT=V_CC-
0.2V)
4
-
-0.8
-
-
mA
-
mA
I_OL2 Output Low Current2
Left, Right, FOUT(V_OUT=0.2V)
150
-
-
uA
T_A = 10~40°C, V_cc = 1.0V~1.5V
* 2.2MΩ feedback resistors for the two reversing amplifiers; 9.1kΩ external resistor and a 180pf capacitor for the on-chip
oscillator.
AC Electrical Characteristics
AC Electrical Characteristics of 977B
Parameters
Description
fOSC Oscillator Frequency *
f_max-f_min Oscillator Frequency Fluctuation
tFUN Cycle Time of Function Code
tSTA Cycle Time of Start Code
fCSC Carrier Frequency of SC Pin
Test Condition
TA= 25^OC, R = 200 kΩ
TA=25^OC, V_CC= 1.8 ~ 5V
fOSC = 102 to 154 kHz
fOSC = 102 to 154 kHz
fOSC = 102 to 154 kHz
Min.
102
0.8
1.6
51
Type
128
1
2
64
Max.
154
15
1.2
2.4
77
Units
κΗz
kΗz
ms
ms
kHz
Note: Over the Operating Rating, 0^OC ≤ T_A ≤ 70^OC, V_CC = 4V
* The relative error between the frequencies of the two on-chip oscillators in the PT8A977B and PT8A9781 must be less
than ±25%.
AC Electrical Characteristics of 9781
Sym
Description
Test Conditions
Min. Type Max. Unit
f_OSC
f_FOUT
D_FOUT
VSI
T_FUN
T_STA
Oscillator Frequency*
Frequency of FOUT
Duty Cycle of FOUT
SI Pin Receive Sensitivity
Cycle Time of Function Code
Cycle Time of Start Code
119.04 131 136.96 kHz
R=9.1kΩ, C=180pf, V_CC = 1.0
~ 1.5V
65.5
kHz
45
50
55
%
Guaranteed Effective
Decoding
-
-
300
mV
-
0.75
1
1.25
ms
-
1.5
2
2.5
ms
T_A = 10~40°C, V_cc = 1.0V~1.5V
* The relative error between the frequencies of the two on-chip oscillators in the PT8A977B and PT8A9781 must be less
than ±25%.
PT0118(02/04)
7
Ver:3