MCU Electrical Specifications
MC9S12VRP Family Reference Manual Rev. 1.3
500
NXP Semiconductors
A.2.1
High Voltage Inputs (HVI) Characteristics
A.3
Supply Currents
This section describes the current consumption characteristics of the device as well as the conditions for
the measurements.
A.3.1
Measurement Conditions
Current is measured on VSUP. VDDX is connected to VDDA. It does not include the current to drive
external loads. Unless otherwise noted the currents are measured in special single chip mode and the CPU
code is executed from RAM. For Run and Wait current measurements PLL is on and the reference clock
is the IRC1M trimmed to 1MHz. The bus clock frequency is set to the max value of 25MHz and the CPU
frequency is 50 MHz.
show the configuration of the CPMU
module and the peripherals for Run, Wait and Stop current measurement.
Table A-12. HVI Electrical Characteristics (Junction Temperature From –40
C To +150
C)
Conditions are 5.5 V < V
SUP
< 18V. Typical values reflect the parameter mean at T
A
= 25°C unless otherwise noted.
Num
Rating
Symbol
Min
Typ
Max
Unit
1
Digital Input Threshold
• V
SUP
6.5V
• 5.5V
V
SUP
6.5V
V
TH_HVI
1.8
1.5
2.5
2.3
3.7
3.7
V
V
2
Input Hysteresis
V
HYS_HVI
—
250
—
mV
3
Pin Input Divider Ratio with external series R
EXT_HVI
Ratio = V
HVI
/ V
Internal(ADC)
Ratio
L_HVI
Ratio
H_HVI
—
—
2
6
—
—
—
—
4
Analog Input Matching
Absolute Error on V
ADC
1
• Compared to V
HVI
/ Ratio
L_HVI
(1V < V
HVI
< 7V)
• Compared to V
HVI
/ Ratio
H_HVI
(3V < V
HVI
< 21V)
• Direct Mode (PTADIRL=1). (0.5V <V
HVI
< 3.5V)
1
Outside of the given V
HVI
range the error is significant. The ratio can be changed, if outside of the given range.
AIM
L_HVI
AIM
H_HVI
AIM
D_HVI
—
—
—
± 2
2
2
± 5
5
5
%
%
%
5
High Voltage Input Series Resistor
Always required externally at HVI pins
.
R
EXT_HVI
—
10
—
k
6
Enable Uncertainty Time
t
UNC_HVI
—
1
—
s
7
Input capacitance
C
IN_HVI
—
8
—
pF
8
Injection Current
I
IC_HVI
See Footnote
2
2
The HVI pins do not include the diode structures shown in
that inject current when the input goes outside the
supply-ground range. Thus the HVI pin current injection is limited to below 200uA within the absolute maximum pin
voltage range. However if the HVI impedance converter bypass is enabled, then even currents in this range can corrupt
ADC results from simultaneous conversions on other channels. This can be prevented by disabling the bypass, either by
clearing the PTAENLx or PTABYPLx bit.
Similarly, when the ADC is converting an HVI pin voltage, then the impedance converter bypass must be disabled to
ensure that current injection on PADx pins does not impact the HVI ADC conversion result.
—
Содержание MC9S12VRP64
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