MKL24Z32VFM4 参数 Datasheet PDF下载

Peripheral operating requirements and behaviors

6.5 Security and integrity modules

There are no specifications necessary for the device's security and integrity modules.

6.6 Analog

6.6.1 ADC electrical specifications

All ADC channels meet the 12-bit single-ended accuracy specifications.

6.6.1.1

Symbol

V

DDA

ΔV

DDA

ΔV

SSA

V

REFH

V

REFL

V

ADIN

C

ADIN

R

ADIN

R

AS

12-bit ADC operating conditions

Description

Supply voltage

Supply voltage

Ground voltage

ADC reference

voltage high

ADC reference

voltage low

Input voltage

Input capacitance

Input resistance

Analog source

resistance

12-bit modes

f

ADCK

< 4 MHz

≤ 12-bit mode

≤ 12 bit modes

No ADC hardware averaging

Continuous conversions

enabled, subsequent

conversion time

• 8-/10-/12-bit modes

Conditions

Absolute

Delta to V

DD

(V

DD

-V

DDA

)

Delta to V

SS

(V

SS

- V

SSA

)

Table 19. 12-bit ADC operating conditions

Min.

1.71

-100

-100

1.13

V

SSA

V

REFL

—

—

—

1.0

Typ.

—

0

0

V

DDA

V

SSA

—

4

2

—

—

Max.

3.6

+100

+100

V

DDA

V

SSA

V

REFH

5

5

5

18.0

Unit

V

mV

mV

V

V

V

pF

kΩ

kΩ

MHz

20.000

—

818.330

Ksps

Notes

f

ADCK

C

rate

ADC conversion

clock frequency

ADC conversion

rate

1. Typical values assume V

DDA

= 3.0 V, Temp = 25 °C, f

ADCK

= 1.0 MHz unless otherwise stated. Typical values are for

reference only and are not tested in production.

2. DC potential difference.

3. For packages without dedicated VREFH and VREFL pins, V

REFH

is internally tied to V

DDA

, and V

REFL

is internally tied to

V

SSA

.

4. This resistance is external to MCU. The analog source resistance must be kept as low as possible to achieve the best

results. The results in this data sheet were derived from a system which has < 8 Ω analog source resistance. The R

AS

/C

AS

time constant should be kept to < 1ns.

5. To use the maximum ADC conversion clock frequency, the ADHSC bit must be set and the ADLPC bit must be clear.

6. For guidelines and examples of conversion rate calculation, download the

KL24 Sub-Family Data Sheet Data Sheet, Rev. 3, 9/19/2012.

Freescale Semiconductor, Inc.

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