Datasheet

77
XMEGA A4U [DATASHEET]
Atmel-8387H-AVR-ATxmega16A4U-34A4U-64A4U-128A4U-Datasheet_09/2014
36.1.5 I/O Pin Characteristics
The I/O pins comply with the JEDEC LVTTL and LVCMOS specification and the high- and low level input and output
voltage limits reflect or exceed this specification.
Table 36-7. I/O pin characteristics.
Notes: 1. The sum of all I
OH
for PORTA and PORTB must not exceed 100mA.
The sum of all I
OH
for PORTC must not exceed 200mA.
The sum of all I
OH
for PORTD and pins PE[0-1] on PORTE must not exceed 200mA.
The sum of all I
OH
for PE[2-3] on PORTE, PORTR and PDI must not exceed 100mA.
2. The sum of all I
OL
for PORTA and PORTB must not exceed 100mA.
The sum of all I
OL
for PORTC must not exceed 200mA.
The sum of all I
OL
for PORTD and pins PE[0-1] on PORTE must not exceed 200mA.
The sum of all I
OL
for PE[2-3] on PORTE, PORTR and PDI must not exceed 100mA.
Symbol Parameter Condition Min. Typ. Max. Units
I
OH
(1)
/
I
OL
(2)
I/O pin source/sink current -20 20 mA
V
IH
High level input voltage
V
CC
= 2.7 - 3.6V 2.0 V
CC
+0.3
VV
CC
= 2.0 - 2.7V 0.7*V
CC
V
CC
+0.3
V
CC
= 1.6 - 2.0V 0.8*V
CC
V
CC
+0.3
V
IL
Low level input voltage
V
CC
= 2.7- 3.6V -0.3 0.8
VV
CC
= 2.0 - 2.7V -0.3 0.3*V
CC
V
CC
= 1.6 - 2.0V -0.3 0.2*V
CC
V
OH
High level output voltage
V
CC
= 3.0 - 3.6V I
OH
= -2mA 2.4 0.94*V
CC
V
V
CC
= 2.3 - 2.7V
I
OH
= -1mA 2.0 0.96*V
CC
I
OH
= -2mA 1.7 0.92*V
CC
V
CC
= 3.3V I
OH
= -8mA 2.6 2.9
V
CC
= 3.0V I
OH
= -6mA 2.1 2.6
V
CC
= 1.8V I
OH
= -2mA 1.4 1.6
V
OL
Low level output voltage
V
CC
= 3.0 - 3.6V I
OL
= 2mA 0.05*V
CC
0.4
V
V
CC
= 2.3 - 2.7V
I
OL
= 1mA 0.03*V
CC
0.4
I
OL
= 2mA 0.06*V
CC
0.7
V
CC
= 3.3V I
OL
= 15mA 0.4 0.76
V
CC
= 3.0V I
OL
= 10mA 0.3 0.64
V
CC
= 1.8V I
OL
= 5mA 0.2 0.46
I
IN
Input leakage current T = 25°C <0.01 0.1 µA
R
P
Pull/buss keeper resistor 24 kΩ
t
r
Rise time No load
4.0
ns
slew rate limitation 7.0