MCF51JF128_12 Datasheet, PDF (38/73 Pages) Freescale Semiconductor, Inc – MCF51JF128

Analog
Table 23. 12-bit ADC characteristics (V_REFH = V_DDA, V_REFL = V_SSA) (continued)
Symbol Description
E_FS
Full-scale error
Conditions¹
• 12 bit modes
• <12 bit modes
Min.
—
—
Typ.²
-4
-1.4
Max.
-5.4
-1.8
Unit
LSB⁴
Notes
V_ADIN =
V_DDA
5
E_Q
Quantization
error
• 12 bit modes
—
—
±0.5
LSB⁴
E_IL
Input leakage
error
I_In × R_AS
mV
I_In =
leakage
current
(refer to
the MCU's
voltage
and
current
operating
ratings)
Temp sensor
slope
–40°C to 105°C
—
1.715
—
mV/°C
V_TEMP25 Temp sensor
voltage
25°C
—
719
—
mV
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 should be set, the HSC bit should be clear with 1MHz ADC conversion clock
speed.
4. _{1 LSB = (VREFH - VREFL)/2}^N
5. ADC conversion clock <16MHz, Max hardware averaging (AVGE = %1, AVGS = %11)
6.6.2 CMP and 6-bit DAC electrical specifications
Table 24. Comparator and 6-bit DAC electrical specifications
Symbol
V_DD
I_DDHS
I_DDLS
V_AIN
V_AIO
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
Min.
1.71
—
—
V_SS – 0.3
—
Typ.
—
—
—
—
—
Max.
3.6
200
20
V_DD
20
Unit
V
μA
μA
V
mV
Table continues on the next page...
MCF51JF128 Data Sheet, Rev. 6, 01/2012.
38
Freescale Semiconductor, Inc.