在RFID门锁产品中使用EFM8SB10F8G 8bit低功耗单片机，使用GPIO引脚输出方波脉冲的时候，发现无法输出2.8uS方波，脉冲宽度超过了2.8uS，是什么原因？

8Bit MCU

EFM8SB1系列

"Low Power, 8kB 512B RAM, 12b ADC, 13 ch CapSense "

QFN-20G

Low Power, 8kB/512B RAM, 12b ADC, 12 ch CapSense

"Low Power, 8kB 512B RAM, 12b ADC, 14 ch CapSense "

"Low Power, 8kB 512B RAM, 12b ADC, 14 ch CapSense "

"Low Power, 8kB 512B RAM, 12b ADC, 13 ch CapSense "

"Low Power, 8kB 512B RAM, 12b ADC, 14 ch CapSense "

Low Power, 8kB/512B RAM, 12b ADC, 12 ch CapSense

"Low Power, 8kB 512B RAM, 12b ADC, 14 ch CapSense "

Low Power, 8kB/512B RAM, 12b ADC, 13 ch CapSense

Low Power, 8kB/512B RAM, 12b ADC, 14 ch CapSense

8Bit MCU

EFM8BB2系列

16kB/2304B RAM, 12b ADC

QFN20

Low Power, 32kB/4352B RAM, 10b ADC

"Low Power, 4kB 512B RAM, 12b ADC, 13 ch CapSense "

Low Power, 16kB/4352B RAM, 10b ADC

Low Power, 32kB/4352B RAM, 10b ADC

"Low Power, 64kB/4352B RAM, 10b ADC"

Low Power, 64kB/4352B RAM, 10b ADC

32kB flash, 2.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

32kB flash, 2.25 kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor

16kB flash, 1.25 kB RAM, 14b ADC, ±3°C temp sensor

USB, 32kB 2304B RAM, 10b Diff-ADC

16kB flash, 1.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

USB, 64kB/4352B RAM, 10b Diff-ADC

"Low Power, 2kB 256B RAM, 12b ADC, 13 ch CapSense "

64kB flash, 4.25 kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor, SMBus bootloader

64kB flash, 4.25 kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor, SMBus bootloader

32kB flash, 2.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

16kB flash, 1.25 kB RAM, 12b ADC, 2x DACs, ±3°C temp sensor, SMBus bootloader

16kB flash, 1.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

8-bit Microcontroller

32kB flash, 2.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor, SMBus bootloader

16kB flash, 1.25 kB RAM, 12b ADC, 2x DACs, ±3°C temp sensor, SMBus bootloader

16kB flash, 1.25 kB RAM, 14b ADC, ±3°C temp sensor

Low Power, 32kB 4352B RAM, 10b ADC

32kB flash, 2.25 kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor

16kB/2304B RAM, 12b ADC

"32kB flash, 2.25 kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor"

Low Power, 64kB/4352B RAM, 10b ADC

USB, 64kB/4352B RAM, 10b Diff-ADC, EMIF

16kB flash, 1.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

USB, 64kB/4352B RAM, 10b Diff-AD

USB, 32kB/2304B RAM, 10b Diff-ADC

USB, 32kB/2304B RAM, 10b Diff-ADC, EMIF

Low Power, 32kB/4352B RAM, 10b ADC

32kB flash, 2.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

64kB flash, 4.25kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor

USB, 32kB 2304B RAM, 10b Diff-ADC

"USB, 16kB/2304B RAM, 12b ADC, Charger detect"

"EFM8 8051 8-bit MCU, Industrial Grade, 32kB, 2kB(RAM), 29 GPIO, 2 DACs, 12 bit ADC, 20 ADC Channels(Available Mid Aug) "

"Low Power, 2kB 256B RAM, 12b ADC, 13 ch CapSense "

32kB flash, 2.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

8-bit Microcontroller

USB, 64kB 4352B RAM, 10b Diff-ADC

MCU 8051 8-bit MCU 40KB Flash 13 GPIO's

USB, 8kB/2304B RAM, 12b ADC, Charger detect

USB, 16kB/2304B RAM, 12b ADC, Charger detect

16kB flash, 1.25 kB RAM, 14b ADC, 2x DACs, ±3°C temp sensor

64kB flash, 4.25kB RAM, 14b ADC, 4x DACs, ±3°C temp sensor

EFM8开发工具

Low Power, 32kB/4352B RAM, 10b ADC

32kB flash, 2.25 kB RAM, 14b ADC, 4x DACs, ±3°C temp

8-bit Microcontroller

"EFM8 8051 8-bit MCU, AEC-Q100, Automotive, 64kB, 4kB(RAM), 20 GPIO, 4 DACs, 12 bit ADC, 12 ADC Channels(Available Mid Aug)"

MCU 8051 8-bit MCU 40KB Flash 17 GPIO's

"EFM8 8051 8-bit MCU, Industrial Grade, 32kB, 2kB(RAM), 20 GPIO, 2 DACs, 12 bit ADC, 12 ADC Channels(Available Mid Aug)"

USB, 32kB/2304B RAM, 10b Diff-ADC

Low Power, 64kB/4352B RAM, 10b ADC

"EFM8 8051 8-bit MCU, Industrial Grade, 16kB, 2kB(RAM), 29 GPIO, 2 DACs, 12 bit ADC, 20 ADC Channels(Available Mid Aug)"

"EFM8 8051 8-bit MCU, Industrial Grade, 64kB, 4kB(RAM), 29 GPIO, 4 DACs, 12 bit ADC, 20 ADC Channels(Available Mid Aug)"

Low Power, 16kB/4352B RAM, 10b ADC

MCU 8051 8-bit MCU 40KB Flash 17 GPIO's

USB, 16kB/2304B RAM, 12b ADC, Charger detect

Low Power, 32kB/4352B RAM, 10b ADC

USB, 64kB/4352B RAM, 10b Diff-ADC

USB, 16kB/2304B RAM, 12b ADC, Charger detect

"USB, 16kB 2304B RAM, 12b ADC, Charger detect"

"Low Power, 4kB 512B RAM, 12b ADC, 13 ch CapSense "

Low Power, 64kB/4352B RAM, 10b ADC

"USB, 16kB 2304B RAM, 12b ADC, Charger detect"

Low Power, 64kB 4352B RAM, 10b ADC

USB, 32kB/2304B RAM, 10b Diff-ADC

Low Power, 16kB 4352B RAM, 10b ADC

USB, 16kB 2304B RAM, 12b ADC, Charger detect

开发套件

"EFM8SB10 Sleepy Bee Starter Kit". EFM8SB10开发套件

开发套件

"EFM8SB20 Sleepy Bee Starter Kit". EFM8SB20开发套件

ZigBee Capacitive Sense Dimmer Switch Reference Design Kit with EM3587, EFM8SB1 and PCB antenna. EM3587, EFM8SB1开发工具

USB, 64kB 4352B RAM, 10b Diff-ADC, EMIF.

8-bit microcontrollers(MCUs)

EFM8 Busy Bee系列、EFM8、EFM8BB3、EFM8BB3x-5QFN32系列

8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU

QFN32-AI

"Low Power, 32kB/4352B RAM, 10b ADC"

8-bit Microcontroller

"EFM8 8051 8-bit MCU, AEC-Q100, Automotive 16kB, 2kB(RAM), 29 GPIO, 2 DACs, 12 bit ADC, 20 ADC Channels(Available Mid Aug)"

"EFM8 8051 8-bit MCU, AEC-Q100, Automotive 16kB, 2kB(RAM), 20 GPIO, 2 DACs, 12 bit ADC, 12 ADC Channels(Available Mid Aug)"

Low Power, 64kB 4352B RAM, 10b ADC

"EFM8 8051 8-bit MCU, AEC-Q100, Automotive 32kB, 2kB(RAM), 20 GPIO, 2 DACs, 12 bit ADC, 12 ADC Channels(Available Mid Aug)"

8-bit Microcontroller

"EFM8 8051 8-bit MCU, AEC-Q100, Automotive, 64kB, 4kB(RAM), 20 GPIO, 4 DACs, 12 bit ADC, 12 ADC Channels(Available Mid Aug)"

"EFM8 8051 8-bit MCU, AEC-Q100, Automotive 64kB, 4kB(RAM), 29 GPIO, 4 DACs, 12 bit ADC, 20 ADC Channels(Available Mid Aug)"

"EFM8 8051 8-bit MCU, Industrial Grade, 16kB, 2kB(RAM), 20 GPIO, 2 DACs, 12 bit ADC, 12 ADC Channels(Available Mid Aug)"

8-bit Microcontroller