Peripheral operating requirements and behaviors
Table 20. 12-bit ADC characteristics (V
REFH
= V
DDA
, V
REFL
= V
SSA
) (continued)
Symbol
E
Q
E
IL
Description
Quantization
error
Input leakage
error
Conditions
• 12-bit modes
Min.
—
Typ.
—
I
In
× R
AS
Max.
±0.5
Unit
LSB
4
mV
I
In
=
leakage
current
(refer to
the MCU's
voltage
and current
operating
ratings)
Temp sensor
slope
V
TEMP25
Temp sensor
voltage
Across the full temperature
range of the device
25 °C
—
—
1.715
719
—
—
mV/°C
mV
Notes
1. All accuracy numbers assume the ADC is calibrated with V
REFH
= V
DDA
2. Typical values assume V
DDA
= 3.0 V, Temp = 25°C, f
ADCK
= 2.0 MHz unless otherwise stated. Typical values are for
reference only and are not tested in production.
3. The ADC supply current depends on the ADC conversion clock speed, conversion rate and the ADLPC bit (low power).
For lowest power operation the ADLPC bit must be set, the HSC bit must be clear with 1 MHz ADC conversion clock
speed.
4. 1 LSB = (V
REFH
- V
REFL
)/2
N
5. ADC conversion clock < 16 MHz, Max hardware averaging (AVGE = %1, AVGS = %11)
6.6.2 CMP and 6-bit DAC electrical specifications
Table 21. Comparator and 6-bit DAC electrical specifications
Symbol
V
DD
I
DDHS
I
DDLS
V
AIN
V
AIO
V
H
Description
Supply voltage
Supply current, high-speed mode (EN = 1, PMODE =
1)
Supply current, low-speed mode (EN = 1, PMODE = 0)
Analog input voltage
Analog input offset voltage
Analog comparator hysteresis
1
• CR0[HYSTCTR] = 00
• CR0[HYSTCTR] = 01
• CR0[HYSTCTR] = 10
• CR0[HYSTCTR] = 11
V
CMPOh
V
CMPOl
Output high
Output low
—
—
—
—
V
DD
– 0.5
—
Table continues on the next page...
5
10
20
30
—
—
—
—
—
—
—
0.5
mV
mV
mV
mV
V
V
Min.
1.71
—
—
V
SS
—
Typ.
—
—
—
—
—
Max.
3.6
200
20
V
DD
20
Unit
V
μA
μA
V
mV
KL24 Sub-Family Data Sheet Data Sheet, Rev. 3, 9/19/2012.
Freescale Semiconductor, Inc.
33
FREESCALE [ FREESCALE SEMICONDUCTOR, INC ]
