73S1209F Data Sheet
DS_1209F_004
106
Rev.
1.2
3.3 Digital IO Characteristics
These requirements pertain to digital I/O pin types with consideration of the specific pin function and
configuration. The LED(1:0) pins have pull-ups that may be enabled. The Row pins have 100K
Ω
pull-ups.
Symbol Parameter
Conditions
Min.
Typ. Max.
Unit
Voh
Output level, high
Ioh =-2mA
0.8 *VDD
VDD
V
Vol
Output level, low
Iol=2mA
0
0.3
V
Vih
Input voltage, high
2.7v < VDD <3.6v
1.8
VDD+0.3
V
Vil
Input voltage, low
2.7v < VDD <3.6v
-0.3
0.6
V
Ileak
Leakage current
0 < Vin < VDD
All output modes disabled,
pull-up/downs disabled
-5 5
μ
A
Ipu
Pull-up current
If provided and enabled,
Vout < 0.1v
-5
μ
A
Ipd
Pull-down current
If provided and enabled,
Vout > VDD – 0.1v
5
μ
A
Symbol Parameter
Conditions
Min.
Typ. Max.
Unit
Iled
LED drive current
Vout = 1.3V,
2.7v < VDD < 3.6v
2
4
10
mA
Iolkrow
Keypad Row output
low current
0.0v < Voh < 0.1v
when pull-up R is enabled
-100
μ
A
Iolkcol Keypad
column
output high current
0.0v < Voh < 0.1v
when col. is pulled low
-3
mA
3.4 Oscillator Interface Requirements
Symbol Parameter
Condition
Min Typ. Max Unit
High-Frequency Oscillator (Xin) Parameters. XIN Is Used As Input For External Clock For Test
Purposes Only. A Resistor Connecting X12in To X12out Is Required, Value = 1M
Ω
.
VILX12IN
Input Low Voltage – X12IN -0.3
0.3*VDD
V
VIHX12IN
Input High Voltage – X12IN
0.7*VDD
Vdd+.0.3
V
IILXTAL
Input Current –
X12IN
GND < Vin < Vdd
-10
10
μ
A
Fxtal
Crystal resonant frequency
Fundamental mode
6
12
MHz
3.5 DC Characteristics: Analog Input
Symbol Parameter
Condition
Min Typ. Max Unit
V
THTOL
Voltage
Threshold
Tolerance
Selected Threshold
Value
-3% +3% V