參數(shù)資料
型號： 9S12KT256DGV1
英文描述： MC9S12KT256 Device User Guide
中文描述： MC9S12KT256設備用戶指南
文件頁數(shù)： 85/126頁
文件大小： 7307K
代理商： 9S12KT256DGV1
Device User Guide — 9S12KT256DGV1/D V01.09
85
Freescale Semiconductor
Insure external VDD5 load will shunt current greater than maximum injection current. This will be the
greatest risk when the MCU is not consuming power; e.g. if no system clock is present, or if clock rate is
very low which would reduce overall power consumption.
A.1.5 Absolute Maximum Ratings
Absolute maximum ratings are stress ratings only. A functional operation under or outside those maxima
is not guaranteed. Stress beyond those limits may affect the reliability or cause permanent damage of the
device.
This device contains circuitry protecting against damage due to high static voltage or electrical fields;
however, it is advised that normal precautions be taken to avoid application of any voltages higher than
maximum-rated voltages to this high-impedance circuit. Reliability of operation is enhanced if unused
inputs are tied to an appropriate logic voltage level (e.g., either V
SS5
or V
DD5
).
Table A-1 Absolute Maximum Ratings
Num
Rating
Symbol
Min
Max
Unit
1
I/O, Regulator and Analog Supply Voltage
V
DD5
-0.3
6.5
V
2
Internal Logic Supply Voltage
1
NOTES
:
1. The device contains an internal voltage regulator to generate the logic and PLL supply out of the I/O supply.
The absolute maximum ratings apply when the device is powered from an external source.
2. All digital I/O pins are internally clamped to V
SSX
and V
DDX
, V
SSR
and V
DDR
or V
SSA
and V
DDA
.
3. These pins are internally clamped to V
SSPLL
and V
DDPLL
4. This pin is clamped low to V
SSR
, but not clamped high. This pin must be tied low in applications.
V
DD
-0.3
3.0
V
3
PLL Supply Voltage
(1)
V
DDPLL
-0.3
3.0
V
4
Voltage difference VDDX to VDDR and VDDA
VDDX
-0.3
0.3
V
5
Voltage difference VSSX to VSSR and VSSA
VSSX
-0.3
0.3
V
6
Digital I/O Input Voltage
V
IN
-0.3
6.5
V
7
Analog Reference
V
RH,
V
RL
-0.3
6.5
V
8
XFC, EXTAL, XTAL inputs
V
ILV
-0.3
3.0
V
9
TEST input
V
TEST
-0.3
10.0
V
10
Instantaneous Maximum Current
Single pin limit for all digital I/O pins
2
I
D
-25
+25
mA
11
Instantaneous Maximum Current
Single pin limit for XFC, EXTAL, XTAL
3
I
DL
-25
+25
mA
12
Instantaneous Maximum Current
Single pin limit for TEST
4
I
DT
-0.25
0
mA
13
Operating Temperature Range (packaged)
T
A
– 40
125
°
C
14
Operating Temperature Range (junction)
T
J
– 40
140
°
C
15
Storage Temperature Range
T
stg
– 65
155
°
C
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