NXP MKE02Z64 数据手册：关键特性与支持设备

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"MKE02Z64是NXP公司推出的一款微控制器，属于KE02系列。该数据手册详细介绍了MKE02Z64及其相关变体型号的规格和特性，包括不同封装和存储容量的选择。这些变体包括MKE02Z16VLC2/R、MKE02Z32VLC2/R、MKE02Z64VLC2/R、MKE02Z16VLD2/R、MKE02Z32VLD2/R、MKE02Z64VLD2/R、MKE02Z32VLH2/R、MKE02Z64VLH2/R、MKE02Z32VQH2/R以及MKE02Z64VQH2/R。" MKE02Z64的关键特性包括： 1. **工作特性**：这款微控制器的工作电压范围为2.7至5.5伏，这使得它能够适应广泛的电源条件。其闪存编程电压同样在2.7至5.5伏之间，确保在各种电压下都能进行程序写入。温度范围涵盖-40至105摄氏度，确保了它在恶劣环境下的稳定运行。 2. **性能**：MKE02Z64内置了最高20MHz的ARM Cortex-M0+核心，这种高效能的CPU内核能处理复杂的计算任务。它还具有单周期32位x32位乘法器，可以快速执行乘法运算。单周期I/O访问端口则允许快速的数据输入输出操作，提高了系统响应速度。 3. **内存与内存接口**：MKE02Z64提供最大64KB的闪存，用于存储程序代码和非易失性数据。同时，它还配备了最多256B的EEPROM，用于存储需要在断电后保留的信息。此外，还有最多4KB的RAM，作为高速数据处理和临时存储的缓冲区。 4. **时钟系统**：设备支持多种时钟源，如环路控制的皮尔斯振荡器，可适用于31.25kHz到39.0625kHz或4MHz到20MHz的晶体或陶瓷谐振器。内部时钟源（ICS）具有内部频率锁定回路（FLL），可以使用内部或外部参考，并且能精确调整内部参考，允许在0°C至70°C温度范围内偏差1%，在-40°C至105°C范围内偏差1.5%，最高可达20MHz。另外，还有一个1kHz的低功耗内部振荡器（LPO）。 5. **系统外设**：MKE02Z64配备了一个电源管理模块（PMC），提供了运行、等待和停止三种电源模式，以优化功耗。这一特性对于电池供电或能源受限的设备尤其重要。除此之外，可能还包括其他系统级外设，例如定时器、串行通信接口、中断控制器等，但数据手册未在此处详细列出。 MKE02Z64是一款针对低功耗应用设计的高性能微控制器，适合在各种嵌入式系统中使用，尤其是在需要高效率、宽电压范围和良好温度适应性的场合。通过其丰富的内存配置和强大的外设集，MKE02Z64能够满足多种嵌入式设计的需求。

This device contains circuitry protecting against damage due to high static voltage or

electrical fields; however, it is advised that normal precautions be taken to avoid

application of any voltages higher than maximum-rated voltages to this high-impedance

circuit. Reliability of operation is enhanced if unused inputs are tied to an appropriate

logic voltage level (for instance, either V

or V

) or the programmable pullup resistor

associated with the pin is enabled.

Table 2. Voltage and current operating ratings

Symbol Description Min. Max. Unit

Supply voltage –0.3 6.0 V

Maximum current into V

— 120 mA

DIO

Digital input voltage (except RESET, EXTAL, and XTAL) –0.3 V

+ 0.3 V

AIO

Analog

, RESET, EXTAL, and XTAL input voltage –0.3 V

+ 0.3 V

Instantaneous maximum current single pin limit (applies to all

port pins)

–25 25 mA

DDA

Analog supply voltage V

– 0.3 V

+ 0.3 V

1. Analog pins are defined as pins that do not have an associated general-purpose I/O port function.

General

Nonswitching electrical specifications

5.1.1 DC characteristics

This section includes information about power supply requirements and I/O pin

characteristics.

Table 3. DC characteristics

Symbol C Descriptions Min Typical

Max Unit

— — Operating voltage — 2.7 — 5.5 V

P Output high

voltage

All I/O pins, standard-

drive strength

5 V, I

load

= –

5 mA

– 0.8 — — V

C 3 V, I

load

= –

2.5 mA

– 0.8 — — V

P High current drive

pins, high-drive

strength

5 V, I

load

= –

20 mA

– 0.8 — — V

C 3 V, I

load

= –

10 mA

– 0.8 — — V

Table continues on the next page...

5.1

General

KE02 Sub-Family Data Sheet, Rev3, 07/2013.

Freescale Semiconductor, Inc. 7

Table 3. DC characteristics (continued)

Symbol C Descriptions Min Typical

Max Unit

OHT

D Output high

current

Max total I

for all

ports

5 V — — –100 mA

3 V — — –60

P Output low

voltage

All I/O pins, standard-

drive strength

5 V, I

load

= 5

— — 0.8 V

C 3 V, I

load

2.5 mA

— — 0.8 V

P High current drive

pins, high-drive

strength

5 V, I

load

=20 mA

— — 0.8 V

C 3 V, I

load

10 mA

— — 0.8 V

OLT

D Output low

current

Max total I

for all

ports

5 V — — 100 mA

3 V — — 60

P Input high

voltage

All digital inputs V

>4.5 V 0.70 × V

— — V

>2.7 V 0.75 × V

— —

P Input low

voltage

All digital inputs V

>4.5 V — — 0.30 × V

>2.7 V — — 0.35 × V

hys

C Input

hysteresis

All digital inputs — 0.06 × V

— — mV

| P Input leakage

current

All input only pins

(per pin)

= V

— 0.1 1 µA

| C Hi-Z (off-

state) leakage

current

All input/output (per

pin)

= V

— 0.1 1 µA

OZTOT

| C Total leakage

combined for

all inputs and

Hi-Z pins

All input only and I/O V

= V

— — 2 µA

P Pullup

resistors

All digital inputs,

when enabled

— 30.0 — 50.0 kΩ

D DC injection

current

3, 4, 5

Single pin limit V

< V

> V

-0.2 — 2 mA

Total MCU limit,

includes sum of all

stressed pins

-5 — 25

C Input capacitance, all pins — — — 7 pF

RAM

C RAM retention voltage — 2.0 — — V

1. Typical values are measured at 25 °C. Characterized, not tested.

2. Only PTB4, PTB5, PTD0, PTD1, PTE0, PTE1, PTH0, and PTH1 support ultra high current output.

3. All functional non-supply pins, except for PTA2 and PTA3, are internally clamped to V

and V

4. Input must be current limited to the value specified. To determine the value of the required current-limiting resistor,

calculate resistance values for positive and negative clamp voltages, then use the large value.

5. Power supply must maintain regulation within operating V

range during instantaneous and operating maximum current

conditions. If the positive injection current (V

> V

) is higher than I

, the injection current may flow out of V

and could

result in external power supply going out of regulation. Ensure that external V

load will shunt current higher than

maximum injection current when the MCU is not consuming power, such as no system clock is present, or clock rate is

very low (which would reduce overall power consumption).

Nonswitching electrical specifications

KE02 Sub-Family Data Sheet, Rev3, 07/2013.

8 Freescale Semiconductor, Inc.

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