Rainbow Electronics AT89C5122 - Manual (Page 191)

191
AT8xC5122/23
4202E–SCR–06/06
Note: 1. The voltage on RST should remain between -0.3V and V
CC
+0.3V during dynamic operation.
Note: 1. The voltage on RST should remain between -0.3V and V
CC
+0.3V during dynamic operation.
I
OL
Output Low Current 15 mA
V
OH
Output High Voltage 0.8 CV
CC
CV
CC
(1) V
I
OH
= 20 μ A
External 10K pull-up
resistor tied to CV
CC
I
OH
Output High Current 15 mA
Voltage Stability
-0.25
0.8 CV
CC
0.4
CV
CC
+ 0.25
V Low level
High level
t
R
t
F
Rise and Fall delays 0.8 μ s C
IN
=30pF.
Smart Card RST, CC4, CC8, DC Parameters
Symbol Parameter Min Typ Max Unit Test Conditions
V
OL
Output Low Voltage 0 (1)
0.4
0.12 CV
CC
0.12 CV
CC
V
I
OL
= 50 μΑ (5 V until 2009)
I
OL
= 200 μΑ (5 V from 2009)
I
OL
= 200 μΑ (3V & 1.8V)
I
OL
Output Low Current 15 mA
V
OH
Output High Voltage
CV
CC
-05
0.8 CV
CC
0.8 CV
CC
CV
CC
(1) V
I
OH
= 50 μΑ (+5V until 2009)
I
OH
= 150 μΑ (+5V from 2009)
I
OH
= 150 μΑ (+3V & 1.8V)
I
OH
Output High Current 15 mA
t
R
t
F
Rise and Fall delays 0.8 μ s C
IN
=30 pF
Voltage Stability -0.25
CV
CC
-0.5
0.4 CV
CC
CV
CC
+ 0.25
Low level
High level
Smart Card CIO, DC Parameters
Symbol Parameter Min Typ Max Unit Test Conditions
Card Presence (P1.2) DC Parameters
Symbol Parameter Min Typ Max Unit Test Conditions
I
OL1
CPRES weak pull-up output current 3 10 25 μ A
P1.2=1, short to VSS
Pull-up enabled