MK61FX512VMD12 FREESCALE [Freescale Semiconductor, Inc], MK61FX512VMD12 Datasheet - Page 48
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MK61FX512VMD12
Manufacturer Part Number
MK61FX512VMD12
Description
K61 Sub-Family
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
1.MK61FX512VMD12.pdf
(87 pages)
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Part Number:
MK61FX512VMD12
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Peripheral operating requirements and behaviors
1. Typical values assume V
2. DC potential difference.
3. This resistance is external to MCU. The analog source resistance must be kept as low as possible to achieve the best
4. To use the maximum ADC conversion clock frequency, the ADHSC bit must be set and the ADLPC bit must be clear.
5. For guidelines and examples of conversion rate calculation, download the
48
Symbol
reference only and are not tested in production.
results. The results in this data sheet were derived from a system which has < 8 Ω analog source resistance. The R
time constant should be kept to < 1ns.
C
C
rate
rate
V
AS
ADC conversion
rate
ADC conversion
rate
Description
Table 28. 16-bit ADC operating conditions (continued)
R
Figure 19. ADC input impedance equivalency diagram
AS
DDA
≤ 13 bit modes
No ADC hardware averaging
Continuous conversions
enabled, subsequent
conversion time
16-bit mode
No ADC hardware averaging
Continuous conversions
enabled, subsequent
conversion time
Conditions
= 3.0 V, Temp = 25 °C, f
C
AS
K61 Sub-Family Data Sheet, Rev. 4, 10/2012.
Z
AS
V
ADIN
INPUT PIN EQUIVALENT
Pad
leakage
due to
input
protection
INPUT PIN
INPUT PIN
INPUT PIN
INPUT PIN
ADCK
SIMPLIFIED
CIRCUIT
= 1.0 MHz unless otherwise stated. Typical values are for
20.000
37.037
Min.
ADC calculator tool
Typ.
Z
ADIN
—
—
1
CHANNEL SELECT
R
R
R
R
ADIN
ADIN
ADIN
ADIN
SIMPLIFIED
CIRCUIT
818.330
461.467
Max.
Freescale Semiconductor, Inc.
Ksps
Ksps
Unit
C
ADIN
ADC SAR
ENGINE
Notes
AS
5
5
/C
AS
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