At83c26 – Rainbow Electronics AT83C26 User Manual
Page 66
66
7511B–SCR–10/05
AT83C26
Table 48. Host Interface (IO1, IO2, AUX1, AUX2, CLK, A2/CK, A1/RST, INT)
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
V
IL
Input Low-voltage
0.8
V
V
IH
Input High Voltage
2.2
V
V
OL
Output low voltage
0.3
V
I
OL
= -500µA
V
OH
Output High Voltage
VCC - 0.7V
V
I
OH
= +30µA
Table 49. Host Interface (SCL, SDA, RESET)
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
V
IL
Input Low-voltage
0.8
V
V
IH
Input High Voltage
2.2
V
V
OL
Output low voltage
0.3
V
I
OL
= -3mA
Table 50. Smart Card 1 Class A, 5V (CVCC1)
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
CVCC
Smart card voltage
4.6
5
5.4
V
Load = 60mA
VCC = 3V to 5.5V if STEPREG = 0
VCC > 5.3V if STEPREG = 1
CI
CC
_ovf
Card Supply Current Overflow:
ICCADJA = 0 (reset value)
70
120
200
mA
Ripple on CVCC
70
200
mV
With low ESR capacitance
(0.1 Ohms max)
Spikes on CVCC
0.5
V
Vcardok up
Vcardok high level threshold
5
V
Vcardok down
Vcardok low level threshold
4.65
V
T
VHL
CVCC valid to 0.4V
100
500
μ
s
C
L
=10
μ
F
T
VLH
CVCC 0 to valid
1000
4000
μ
s
C
L
= 10
μ
F
Table 51. Smart Card 1 Class B, 3V (CVCC1)
Symbol
Parameter
Min
Typ
Max
Unit
Test Conditions
CVCC
Smart card voltage
2.76
3.24
V
Load = 60mA
VCC = 3V to 5.5V if STEPREG = 0
VCC > 3.3V if STEPREG = 1