EF6805U3 Datasheet, PDF (4/31 Pages) STMicroelectronics – 8-BIT MICROCOMPUTER UNIT

EF6805U3
SWITCHING CHARACTERISTICS
(V_CC = + 5.25Vdc ± 0.5Vdc, V_SS = 0Vdc, T_A = T_L to T_H unless otherwise noted)
Symbol
Parameter
Min.
Typ.
f_osc
t_cyc
t_WL, t_WH
Oscillator Frequency
Cycle Time (4/f _{o s c})
INT, INT2, and TIMER Pulse Width (see interrupt
section)
0.4
0.95
t_cyc + 250
t _RWL
f _INT
RESET Pulse Width
INT Zero-crossing Detection Input Frequency
External Clock Input Duty Cycle (EXTAL)
Crystal Oscillator Start-up Time*
t _cyc + 250
0.03
40
50
PORT ELECTRICAL CHARACTERISTICS
(V_CC = + 5.25Vdc ± 0.5Vdc, V_SS = 0Vdc, T_A = T_L to T_H unless otherwise noted)
PORT A WITH CMOS DRIVE ENABLED
Symbol
V_OL
V_OH
V _IH
V _IL
I_IH
I _IL
Parameter
Output Low Voltage (I_{L o ad} = 1.6mA)
Output High Voltage
I_{L oad} = – 100µA
I_{L oad} = – 10µA
Input High Voltage (I_{L o ad} = – 300µA max.)
Input Low Voltage (I_{L o ad} = – 500µA max.)
High Z State Input Current (V_in = 2.0V to V_CC)
High Z State Input Current (V_in = 0.4V)
Min.
Typ.
2.4
V_CC – 1.0
2.0
V_SS
PORT B
Symbol
V_OL
V_OH
I_OH
V _IH
V _IL
I_TSI
Parameter
Output Low Voltage
I _{L o ad} = 3.2mA
I _{L o ad} = 10mA (sink)
Output High Voltage I _{L o ad} = – 200µA
Darlington Current Drive (source) V_O = 1.5V
Input High Voltage
Input Low Voltage
High Z State Input Current
Min.
Typ.
2.4
– 1.0
2.0
V _SS
<2
PORT C AND PORT A WITH CMOS DRIVE DISABLED
Symbol
V_OL
V_OH
V _IH
V _IL
I_TSI
Parameter
Output Low Voltage I _{L o ad} = 1.6mA
Output High Voltage I _{L o ad} = – 100µA
Input High Voltage
Input Low Voltage
High Z State Input Current
Min.
2.4
2.0
V _SS
Typ.
<2
Max.
4.2
10
1
60
100
Unit
MHz
µs
ns
ns
kHz
%
ms
Max.
Unit
0.4
V
V
V_CC
V
0.8
V
– 300
µA
– 500
µA
Max.
Unit
V
0.4
1.0
V
– 10
mA
V _CC
V
0.8
V
10
µA
Max.
0.4
V _CC
0.8
10
Unit
V
V
V
V
µs
4/31