Datasheet

Electrical Characteristics
MC9S08GT16A/GT8A Data Sheet, Rev. 1
264 Freescale Semiconductor
Figure A-1. Pullup and Pulldown Typical Resistor Values (V
DD
= 3.0 V)
D Output low voltage (V
DD
≥ 1.8 V)
I
OL
= 2.0 mA (ports A, B, D, E, and G)
V
OL
— 0.5 V
D Output low voltage (port C)
I
OL
= 10.0 mA (V
DD
≥ 2.7 V)
I
OL
= 6 mA (V
DD
≥ 2.3 V)
I
OL
= 3 mA (V
DD
≥ 1.8 V)
—
—
—
0.5
0.5
0.5
D Maximum total I
OL
for all port pins I
OLT
—60
mA
dc injection current
4, 5, 6, 7
DC Injection Current A, B, C, D
Single pin limit
V
IN
> V
DD
V
IN
< V
SS
Total MCU limit, includes sum of all stressed pins
V
IN
> V
DD
V
IN
< V
SS
|I
IC
|
0
0
0
0
-
-
-
-
2
–0.2
25
–5
mA
mA
mA
mA
C Input capacitance (all non-supply pins)
(2)
C
In
—7
pF
1
Typicals are measured at 25°C.
2
This parameter is characterized and not tested on each device.
3
Measurement condition for pull resistors: V
In
= V
SS
for pullup and V
In
= V
DD
for pulldown.
4
Power supply must maintain regulation within operating V
DD
range during instantaneous and operating maximum current
conditions. If positive injection current (V
In
>V
DD
) is greater than I
DD
, the injection current may flow out of V
DD
and could result
in external power supply going out of regulation. Ensure external V
DD
load will shunt current greater than maximum injection
current. This will be the greatest risk when the MCU is not consuming power. Examples are: if no system clock is present, or
if clock rate is very low which (would reduce overall power consumption).
5
All functional non-supply pins are internally clamped to V
SS
and V
DD
.
6
Input must be current limited to the value specified. To determine the value of the required current-limiting resistor, calculate
resistance values for positive and negative clamp voltages, then use the larger of the two values.
7
IRQ does not have a clamp diode to V
DD
. Do not drive IRQ above V
DD
.
Table A-6. DC Characteristics (Sheet 2 of 2)
(Temperature Range = –40 to 125°C Ambient)
C Parameter Symbol Min Typical
1
Max
Unit
PULLUP RESISTOR TYPICALS
V
DD
(V)
PULL-UP RESISTOR (kΩ)
20
25
30
35
40
1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6
25°C
85°C
–40°C
PULLDOWN RESISTOR TYPICALS
V
DD
(V)
PULLDOWN RESISTANCE (kΩ)
20
25
30
35
40
1.8 2.3 2.8 3.3
25°C
85°C
–40°C
3.6