Microchip Technology DV320032 数据表
2012-2013 Microchip Technology Inc.
DS60001185C-page 279
PIC32MX330/350/370/430/450/470
DI60b
I
ICH
Input High Injection
Current
Current
0
—
+5
(8,9,10)
mA
Pins with Analog functions.
Exceptions: [SOSCI] = 0 mA
max.
Digital 5V tolerant desig-
nated pins (V
Exceptions: [SOSCI] = 0 mA
max.
Digital 5V tolerant desig-
nated pins (V
IH
< 5.5V)
(9)
.
Exceptions: [All] = 0 mA
max.
Digital non-5V tolerant desig-
nated pins. Exceptions:
max.
Digital non-5V tolerant desig-
nated pins. Exceptions:
[N/A] = 0 mA max.
DI60c
I
ICT
Total Input Injection
Current (sum of all I/O
and control pins)
Current (sum of all I/O
and control pins)
-20
(11)
—
+20
(11)
mA Absolute instantaneous sum
of all ± input injection cur-
rents from all I/O pins
( | I
rents from all I/O pins
( | I
ICL
+ | I
ICH
| )
I
ICT
TABLE 30-8:
DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS (CONTINUED)
DC CHARACTERISTICS
Standard Operating Conditions: 2.3V to 3.6V (unless otherwise
stated)
Operating temperature
stated)
Operating temperature
-40°C
T
A
+85°C for Industrial
-40°C
T
A
+105°C for V-temp
Param.
No.
Symb.
Characteristics
Min.
Typ.
(1)
Max.
Units
Conditions
Note 1:
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
only and are not tested.
2:
The leakage current on the MCLR pin is strongly dependent on the applied voltage level. The specified
levels represent normal operating conditions. Higher leakage current may be measured at different input
voltages.
levels represent normal operating conditions. Higher leakage current may be measured at different input
voltages.
3:
Negative current is defined as current sourced by the pin.
4:
This parameter is characterized, but not tested in manufacturing.
5:
See the
“Pin Diagrams”
section for the 5V tolerant pins.
6:
The V
IH
specifications are only in relation to externally applied inputs, and not with respect to the user-
selectable internal pull-ups. External open drain input signals utilizing the internal pull-ups of the PIC32
device are guaranteed to be recognized only as a logic “high” internally to the PIC32 device, provided
that the external load does not exceed the minimum value of I
device are guaranteed to be recognized only as a logic “high” internally to the PIC32 device, provided
that the external load does not exceed the minimum value of I
CNPU
. For External “input” logic inputs that
require a pull-up source, to guarantee the minimum V
IH
of those components, it is recommended to use
an external pull-up resistor rather than the internal pull-ups of the PIC32 device.
7:
V
IL
source < (V
SS
- 0.3). Characterized but not tested.
8:
V
IH
source > (V
DD
+ 0.3) for non-5V tolerant pins only.
9:
Digital 5V tolerant pins do not have an internal high side diode to V
DD
, and therefore, cannot tolerate any
“positive” input injection current.
10: Injection currents > | 0 | can affect the ADC results by approximately 4 to 6 counts (i.e., V
IH
Source > (V
DD
+ 0.3) or V
IL
source < (V
SS
- 0.3)).
11: Any number and/or combination of I/O pins not excluded under I
ICL
or I
ICH
conditions are permitted pro-
vided the “absolute instantaneous” sum of the input injection currents from all pins do not exceed the spec-
ified limit. If Note 7, I
ified limit. If Note 7, I
ICL
= (((Vss - 0.3) - V
IL
source) / Rs). If Note 8, I
ICH
= ((I
ICH
source - (V
DD
+ 0.3)) /
RS). RS = Resistance between input source voltage and device pin. If (V
SS
- 0.3)
V
SOURCE
(V
DD
+
0.3), injection current = 0.