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AN0061 从MM32F0010移植到MM32F0020（英文版）

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AN0061 从MM32F0010移植到MM32F0020（英文版）

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www.mm32mcu.com

Migrating from MM32F0010 to MM32F0020

Introduction

This application note describes and analyzes the differences between MM32F0010 and

MM32F0020, and provides steps required to migrate from the exsiting MM32F0010 device to

MM32F0020 device. Hardware difference, peripheral migration and firmware migration are

introduced respectively.

Table 1 Applicable series and models

Series

Models

MM32F0010

MM32F0010A1N

MM32F0010A1T

MM32F0020

MM32F0020B1N

MM32F0020B1T

AN0061

Application note

Rev 1.00 2021/12/16

AN0061 Migrating from MM32F0010 to MM32F0020

www.mm32mcu.com

1 Differences and similarities between

MM32F0020 and MM32F0010

1.1 Specification comparison of MM32F0020 and MM32F0010

MM32F0020 MCU are designed to be compatible with the features and

packages on MM32F0010. On the whole, MM32F0020 has richer functions

than MM32F0010.

Project

MM32F0010

MM32F0020

Descriptions

Core

Cortex-M0

Have the same core

FLASH

16 KB

32 KB

Flash start addresses, operation

controllers and read-protect setting

way are the same; since the Flash

Size of MM32F0020 is increased

to 32KB, the programming time is

also increased, while the Flash

Size of MM32F0010 is only 16KB.

SRAM

2 KB

RAM start addresses and 2 KB

Size are the same.

Maximum CPU

frequency

48 MHz

MM2F0010 adopts the fixed

48MHz, while MM32F0020

supports PLL multiplier, with its

system clock up to 48 MHz.

Operating voltage

2.0V to 5.5V

2.0Vt o 5.5V

Same

GPIO

Not support

Tolerant

Not support Tolerant

GPIO characteristics are the

same. The functions of SWD pin

and the original package are

adjusted.

Boot

Not support ISP

support ISP and it

can be multiplexed to

more pins via

UART1 Boot.

MM32F0020 supports ISP function

and can be multiplexed to SWCLK

via BOOT0. UART1 supports

being multiplexed to more GPIOs.

Timer

Advance

d（4

channels

）

Support the output of 4 channels,

of which 3 channels support

complementary output and 1

channel supports single output.

Besides, MM32F0020’s TIM1 adds

PWM phase shift function.

General-

purpose

（3

channels

）

Same, both series have 16-bit

TIM3 and support the signle output

of 3 channels.

Basic

Same. They both support the

single output of 1 channel.

Migrating from MM32F0010 to MM32F0020 AN0061

www.mm32mcu.com

Systick

Same

ADC

1 x 12bit

Both support arbitrary sequence

channel conversion, while

MM32F0020 supports individual

configuration of each channel

sampling configuration, and

injected sampling.

UART

MM32F0020’s UART support IR

function

SPI

MM32F0010 only supports SPI,

while MM32F0020 supports SPI,

I2S and I/O Pad switch.

I2C

MM32F0020 also supports I/O Pad

switch.

1.2 Comparison of functional pins

MM32F0020 series MCU is compatible with GPIO pin and power supply pin of

MM32F0010 series.

MM32F0010

MM32F0020

Descriptions

Package

QFN20

TSSOP2

QFN20

TSSOP20

The supported package types are

the same.

Number of GPIO

MM32F0020 and MM32F0010

have the same GPIO number.

Boot0 Pin

Pin14

Pin17

MM32F0020 supports Boot0.

MM32F0010 does not support

Boot0.

Take the minimum system of TSSOP20 package chip as an example and the

comparison results are as follows:

AN0061 Migrating from MM32F0010 to MM32F0020

www.mm32mcu.com

TSSOP20

MM32F0010

MM32F0020

Pad Name

Alternate

Function

Pad Name

Alternate Function

GPIO/Power

AF0

GPIO/Power

AF0

PA11

PA12

PA3

PA14/NRST

SWDCLK

PA10/NRST

PB0/OSC_IN

PB1/OSC_OUT

VSS

PA1

VDD

PA0

PA4

PA5

PA6

PA7

PA8

PA9

PA10

PA14/BOOT0

SWDCLK

PA13

SWDIO

PA13

SWDIO

PA15

PA2

Migrating from MM32F0010 to MM32F0020 AN0061

www.mm32mcu.com

Take the minimum system of QFN20 package chip as an example and the

comparison results are as follows:

QFN20

MM32F0010

MM32F0020

Pad Name

Alternate Function

Pad Name

Alternate

Function

GPIO

AF0

GPIO

AF0

PA14/NRST

SWDCLK

PA10/NRST

PB0/OSC_IN

PB1/OSC_OUT

VSS

PA1

VDD

PA0

PA4

PA5

PA6

PA7

PA8

PA9

PA10

PA14/BOOT0

SWDCLK

PA13

SWDIO

PA13

SWDIO

PA15

PA2

PA11

PA12

PA3

Button

Pad

It can be seen from the above two tables that GPIO, power supply and reset

pin functions of MM32F0020 are basically compatible with power supply, reset

pin, WKUP PIN and GPIO functions of MM32F0010.

1. MM32F0020 is compatible with the power supply pins VDD/VSS of

MM32F0010.

2. Differences can be found in SWCLK in the multiplexed SWD interface.

3. After MM32F0010 is powered on, it has no Boot0 Pin function, while

MM32F0020 supports Boot0 Pin function and performs checkup at each

power-on. Thus, during power-on, for running on Main Flash if needed,

PA14/BOOTO Pin must be ensured as low level; for running on ISP if

needed, PA14/BOOT0 Pin must be ensured as high level.

4. Reset pin of MM32F0020 must keep high despite reset feature is enabled

or disabled.

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