Nuvoton NuMicro 8051 Series Manual de usuario

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

1T 8051

8-bit Microcontroller

NuTiny-ML51EB

User Manual

NuMicro®8051 Series

The information described in this document is the exclusive intellectual property of

Nuvoton Technology Corporation and shall not be reproduced without permission from Nuvoton.

Nuvoton is providing this document only for reference purposes of NuMicro® microcontroller based system

design. Nuvoton assumes no responsibility for errors or omissions.

All data and specifications are subject to change without notice.

For additional information or questions, please contact: Nuvoton Technology Corporation.

www.nuvoton.com

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

Table of Contents

1OVERVIEW .........................................................................................3

2NUTINY-ML51EB INTRODUCTION ............................................................4

Virtual COM Port Switch Description ............................................................... 42.1

NuTiny-ML51EB Power Setting and Connector .................................................. 42.2

2.2.1 Power Setting....................................................................................................4

2.2.2 Debug Connector ...............................................................................................5

2.2.3 ICE USB Connector ............................................................................................5

2.2.4 Extended Connector ...........................................................................................5

2.2.5 Reset Button.....................................................................................................5

2.2.6 Power Connector ...............................................................................................5

2.2.7 Virtual COM Port Function Switch ...........................................................................5

Pin Assignment for Extended Connector .......................................................... 62.3

3HOW TO START NUTINY-ML51EB ON THE KEIL ..........................................8

Downloading and Installing KeilC-51 μVision®IDE Software .................................. 83.1

Downloading and Installing Nuvoton Nu-Link Driver............................................. 83.2

Hardware Setup........................................................................................ 83.3

Example Program...................................................................................... 83.4

4NUTINY-ML51EB SCHEMATIC ............................................................... 11

Nu-Link-Me Schematic...............................................................................114.1

NuTiny-ML51EB Schematic.........................................................................124.2

NuTiny-ML51EB Connector.........................................................................134.3

5DOWNLOAD RELATED FILES FROM NUVOTON WEBSITE........................... 14

Downloading Nuvoton KeilC-51 μVision®IDE Driver...........................................145.1

Downloading Nuvoton 8bit 8051 MCUs ML51 Series Sample Code.........................15

5.2

6REVISION HISTORY............................................................................ 16

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NUTINY-ML51EB USER MANUAL

1 OVERVIEW

NuTiny-ML51EB is the specific development tool for 8-bit high performance 1T 8051-based

microcontroller ML51 16K Flash size series. User can use NuTiny-ML51EB to develop and verify

the application program easily.

The ML51 runs up to 24 MHz at a wide voltage range from 1.8V to 5.5V, and contains up to

64/32/16/8 Kbytes Flash called APROM for programming code. The ML51 Flash supports In-

Application-Programming (IAP) function, which enables on-chip firmware updates. Partial Flash

can be optionally configured as Data Flash programmed by IAP and read by IAP or MOVC

instruction. The ML51 includes an additional configurable up to 4/3/2/1 Kbytes Flash area called

LDROM, in which the Boot Code normally resides for carrying out the In-System-Programming

(ISP). To facilitate mass production programming and verification, the Flash is allowed to be

programmed and read electronically by parallel Writer/Programmer or In-Circuit-Programming

(ICP) with Nu-Link. Once programmed and verified, the programmed code can be protected by

the Flash lock mechanism for not being read out by any external programming tool.

The ML51 provides rich peripherals including 256 bytes of SRAM, 4/2/1 Kbytes of auxiliary RAM

(XRAM), up to 43 general purpose I/O, two 16-bit Timers/Counters 0/1, one 16-bit Timer2 with

three-channel input capture module, one Watchdog Timer (WDT), one Self Wake-up Timer

(WKT), one 16-bit auto-reload Timer3 for general purpose or baud rate generator, two UARTs

with frame error detection and automatic address recognition, two ISO7816 Smartcard interface,

two SPI, two I2C, 12 enhanced PWM output channels with dead zone control, two analog

comparators, eight-channel shared pin interrupt for all I/O ports, and one 12-bit ADC at 500 ksps.

There are a total of 30 sources with 4-level-priority interrupts capability.

The ML51 is equipped with four clock sources and supports on-the-fly clock switching via

software control. The four clock sources include two sets of external crystal inputs (HXT, LXT),

38.4 kHz internal oscillator, and one 24 MHz internal high-precision ±2% oscillator. The ML51

provides additional power monitoring detection such as power-on reset and 7-level brown-out

detection, which stabilizes the power-on/off sequence for a high reliability system design.

Through the high performance of 1T 8051 core, low power performance of ML51 and rich well-

designed peripherals, the ML51 benefits for low-power, battery powered devices, general

purpose, home appliances, or motor control system.

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NUTINY-ML51EB USER MANUAL

2 NUTINY-ML51EB INTRODUCTION

NuTiny-ML51EB uses the ML51EB9AE as the target microcontroller. Figure 2.1-1 is NuTiny-

ML51EB for the ML51 16K Flash size series, the left portion is called NuTiny-EVB-ML51 and the

right portion is Debug Adaptor called Nu-Link-Me.

NuTiny-EVB-ML51 is similar to other development boards. User can use it to develop and verify

applications to emulate the real behavior. The on-board chip covers ML51 series features. The

NuTiny-EVB-ML51 can be a real system controller to design user’s target systems.

Nu-Link-Me is a Debug Adaptor. The Nu-Link-Me Debug Adaptor connects your PC's USB port to

the user’s target system (via Serial Wired Debug Port) and allows user to program and debug

embedded programs on the target hardware. To use Nu-Link-Me Debug adaptor with Keil,please

refer to “Nuvoton Nu-Link debug adapter user manual” in detail. This document will be stored in

the local hard disk when user installs each driver. Nu-Link-Me also supports virtual COM port

function. User can use Nu-Link-Me as a USB to UART virtual COM port, which connects to on-

board ML51EB9AE UART0.

ICE Controller

Extended Connector

Reset Key

Power LED USB Connector

VDD

VSS

GPIO LED

ML51EB9AE

HXT circuit

Extended Connector

Virtual COM

Enable Switch

Power Select

Connector

5V or 3.3V

Figure 2.1-1 NuTiny-ML51EB (PCB Board)

Virtual COM Port Switch Description2.1

The switch in Nu-Link-Me, SW3, determines that the virtual COM port function is enabled or

disabled. When user turns on all of the positions of switch, the virtual COM port function will be

enabled. By using virtual COM port function, user can access the USB device in the same way as

it would access a standard COM port to ML51EB9AE UART0 (P3.1 and P3.0) . To use this

function, user needs to install “VCOM Driver” at first. User can get “Nuvoton USB driver”from

NuMicroDVD www.nuvoton.com\NuMicroDVD in folder “Software Utilities” or from website:

Nu-Link_USB_Driver

NuTiny-ML51EB Power Setting and Connector2.2

2.2.1 Power Setting

J1: USB port in Nu-Link-Me

J5 and J2: VDD in Voltage connector in NuTiny-ML51EB

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

Model

JPR1

J1USB Port

JP7 & JP9 VCC33

MCU Voltage

Model 1

Select VCC33

(default)

Connect to PC

DC 3.3V output

DC 3.3V

Model 2

Select VCC5

Connect to PC

DC 5V output

DC 5V

Model 3

DC 1.8 V ~ 5.5 V Input

Voltage from

J5 & J2 input

2.2.2 Debug Connector

JP5: Connector in target board (NuTiny-EVB-ML51) for connecting with Nuvoton ICE

adaptor (Nu-Link-Me)

JP6: Connector in ICE adaptor (Nu-Link-Me) for connecting with a target board (for

example NuTiny-EVB-ML51)

2.2.3 ICE USB Connector

J1: Mini USB Connector in Nu-Link-Me connected to a PC USB port

2.2.4 Extended Connector

JP5 and JP7: Show all chip pins in NuTiny-EVB-ML51

2.2.5 Reset Button

SW1: Reset button in NuTiny-EVB-ML51

2.2.6 Power Connector

J5:1.8V ~ 5.5V VCC connector in NuTiny-EVB-ML51

J2: VSS connector in NuTiny-EVB-ML51

2.2.7 Virtual COM Port Function Switch

SW3: Switch ON/OFF to enable or disable Nu-Link-Me virtual COM port function.

Function

Switch

Descriptions

Enable

Enable Nu-Link-Me virtual COM

port function

Disable

OFF

Disable Nu-Link-Me virtual COM

port function

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

Pin Assignment for Extended Connector2.3

NuTiny-EVB-ML51 provides ML51EB9AE on board and the extended connector for TSSOP-20

pin. is the pin assignment for ML51AT20.

Pin No

Pin Name And Function

I2C1_SCL / P1.4

I2C1_SDA / P1.5

UART0_TXD / P1.6

UART0_RXD / P1.7

VSS

INT0 / CLKO / TM0 / PWM0_CH0 / PWM1_BRAKE / P4.6

VDD

CLKO / TM2_EXT1 / PWM1_CH1 / UART3_RXD / SPI1_CLK / ACMP1_N1 / ADC_CH7 / P3.2

TM2_EXT2 / PWM1_CH2 / UART0_TXD / UART3_TXD / SPI1_MISO / ACMP1_P3 / ACMP0_P3 /

ADC_CH6 / P3.1

TM2_EXT0 / PWM1_CH3 / UART0_RXD / SPI1_MOSI / P3.0

VREF

INT0 / T0 / UART2_TXD / PWM0_CH0 / I2C0_SCL / ACMP1_P0 / ACMP0_P0 / ADC_CH0 / P2.5

INT1 / T1 / UART2_RXD / PWM0_CH1 / I2C0_SDA / ACMP0_N0 / ADC_CH1 / P2.4

PWM0_BRAKE / PWM0_CH2 / UART1_TXD / I2C1_SCL / ACMP1_P1 / ACMP0_P1 / ADC_CH2 / P2.3

P2.2 / ADC_CH3 / ACMP1_N0 / I2C1_SDA / UART1_RXD / PWM0_CH3

P2.1 / ADC_CH4 / ACMP1_P2 / ACMP0_P2 / UART2_TXD / I2C1_SCL / PWM0_CH4 / PWM1_CH4 /

PWM0_BRAKE

P2.0 / ADC_CH5 / ACMP0_N1 / UART2_RXD / I2C1_SDA / PWM0_CH5 / PWM1_CH5 / PWM0_BRAKE

P5.3 / UART0_TXD / I2C0_SCL / XT1_IN

P5.2 / UART0_RXD / I2C0_SDA / XT1_OUT

P0.3 / SPI0_SS / SPI1_SS / UART1_TXD / I2C1_SCL / PWM0_CH2 / CLKO / PWM1_BRAKE

P0.2 / SPI0_CLK / SPI1_CLK / UART1_RXD / I2C1_SDA / PWM0_CH3

P0.1 / SPI0_MISO / SPI1_MISO / UART0_TXD / PWM0_CH4

P0.0 / SPI0_MOSI / SPI1_MOSI / UART0_RXD / PWM0_CH5

nRESET

P5.0 / UART1_TXD / I2C1_SCL / UART0_TXD / ICE_DAT

P5.1 / UART1_RXD / I2C1_SDA / UART0_RXD / ICE_CLK

P4.1 / UART2_TXD / I2C0_SCL / PWM1_CH4 / ACMP0_O

P4.0 / UART2_RXD / I2C0_SDA / PWM1_CH5 / ACMP1_O

Table 2.3-1 Pin Assignment for ML51EB9AE

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

3 HOW TO START NUTINY-ML51EB ON THE KEIL

Downloading and Installing KeilC-51 μVision®IDE Software3.1

Please connect to the Keil company website (http://www.keil.com) to download the Keil C-51

μVision®IDE and install the RVMDK.

Downloading and Installing Nuvoton Nu-Link Driver3.2

Please connect to Nuvoton 8bit 8051 MCUs website (http://www.nuvoton.com/8bit-8051-mcus) to

download the “Nu-Link_Keil_Driver” file. Please refer to section 5.1 for the detailed download flow.

After the Nu-Link driver is downloaded, please unzip the file and execute the file to install the

driver.

Hardware Setup3.3

The hardware setup is shown as Figure 3.3-1

Figure 3.3-1 NuTiny-ML51EB Hardware Setup

Example Program3.4

This example demonstrates the ease of downloading and debugging an application on a NuTiny-

ML51EB board. It can be found on Figure 3.4-1 list directory and downloaded from Nuvoton 8bit

8051 MCUs website.

The example file can be found in the directory list shown in Figure 3.4-1.

NuTiny-ML51EB

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NUTINY-ML51EB USER MANUAL

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