NXP Cortex-M0 LPC1100L – Design
with a Cortex-M0 in a DIP package
ASEE Tech Session
Sergio Scaglia (NXP Semiconductors)
August 2012
Agenda
NXP Microcontroller Portfolio
Cortex M0
LPC1100L Family
Support/Resources
Hands-On Lab
Questions
2
NXP is a leader in ARM Flash MCUs
Clear strategy: 100% focus on ARM
Top performance through leading
technology & architecture
Design flexibility through pin- and
software-compatible solutions
– Scalable memory sizes
– Widest range of peripherals
Unlimited choice through complete
families for multiple cores
3
3
NXP MCU – the only complete ARM range of
Cortex-M0, Cortex-M3 and Cortex-M4 processors
cost
performance
8-bit
16-bit
32-bit
DSP
NXP ARM Cortex-M Continuum
Entry level
Cortex-M0
Fully featured
Cortex-M4
Cortex-M0
True 8/16-bit
replacement
- low power, low cost,
more performance
Cortex-M3
High performance for
communication and
control
- USB, Ethernet, CAN,
and much more
Cortex-M4
Advanced Digital
Signal control
- Floating point unit
- Dual-core options
Over 250 different ARM based microcontrollers available!!
(* Recommended price at 10kpcs)
4
4
Rapidly growing family of ARM Cortex-M MCUs
Check pin- and software compatible options: www.nxp.com/microcontrollers
Cortex-M4
Up to 204 MHz
Cortex-M3
LPC4300
High Performance Dual Core Cortex-M4/M0
LPC4000
FPU and DSP extensions
LPC1800
Memory options up to 1MB flash, 200k SRAM
LPC1700
High-performance with USB, Ethernet, LCD, and more
LPC1300
USB solution, incl. on-chip USB drivers
Up to 180MHz
5
5
NXP’s Cortex™-M0
True 8/16-bit replacement
Cortex-M0 was designed to
replace 8/16-bit architectures
ARM’s smallest, lowest-power,
and most energy-efficient
32-bit MCU core to date
Simplicity! Small instruction
set keeps silicon area and
gate count similar to traditional
8/16-bit MCUs
6
6
Widest Selection of Cortex-M0 Packages
Package
CSP16
QFN33
QFN33
BGA48
QFP48
QFP64
QFP100
SO20
Width
(mm)
2
5
7
4.5
7
10
14
8
5
5
14
Length
(mm)
2
5
7
4.5
7
10
14
13
7
10
35
Height
(mm)
0.60
.85
.85
0.7
1.40
1.40
1.40
2.45
0.95
0.95
4.00
TSSOP20 TSSOP28
DIP28
Sample
Picture
NXP offers the widest selection of packages for Cortex-M0 devices
World’s first low-pin-count 32-bit ARM packages
World’s smallest 32-bit ARM MCU – 2 x 2 mm2
7
USB Solutions for Cortex-M0
Pin
le
b
i
t
a
mp
o
nC
i
P
LPC11U3x
-to
LPC11U2x
LPC11U1x
LPC134x
Up to 64K Flash, up
to 10K SRAM, up to
4K EEPROM
40-128K Flash, up
to 10K SRAM, up
to 4K EEPROM
32K Flash, up to
10K SRAM, up to
4K EEPROM
32K Flash, 6K SRAM
LQFP64 package
offering
Low cost USB
Platform for mbed
Small sector size
(256 bytes)
Small sector size
(256 bytes)
LQFP64 package
offering
LQFP64 package
offering
Platform for
LPCXpreso
8
8
ARM Cortex-M0
Re-defining 32-bit migration
2-10x higher performance than 8/16-bit MCUs
40-50% smaller code size than 8/16-bit MCUs
2-3x power saving compared to 8/16-bit MCUs
Pin compatible options from M0 to M3
“ARM’s smallest, lowestlowest-power,
and most energyenergy-efficient 3232bitbit-processor core to date”
9
CoreMark Benchmarks – Performance
1.6
1.4
1.2
8-bit or 16-bit
ARM Cortex-M
Power
0.6
0.4
ENERGY
COST
0.8
Power
1.0
ENERGY
EFFICIENT
CoreMark Score
CoreMark Performance
0.2
LPC1100L
16-bit
MSP430
8-bit
ATMega
Time
Time
http://www.arm.com/products/processors/cortex-m/index.php
2-10x higher performance than 8/16-bit MCUs
10
10
8- vs. 16-bit vs. Cortex-M0 Current Comparison
11
Cortex-M0 Has Lower Power Consumption
Cortex-M0 runs at a much
slower clock frequency for the
same required performance
Cortex-M0 can sleep most of
the time, or spare the resource
for handling additional tasks
12
Superior Code Density (e.g. 16-bit Multiply)
8-bit (8051)
MOV
A, XL ; 2 bytes
MOV
B, YL ; 3 bytes
MUL
AB; 1 byte
MOV
R0, A; 1 byte
MOV
R1, B; 3 bytes
MOV
A, XL ; 2 bytes
MOV
B, YH ; 3 bytes
MUL
AB; 1 byte
ADD
A, R1; 1 byte
MOV
R1, A; 1 byte
MOV
A, B ; 2 bytes
ADDC A, #0 ; 2 bytes
MOV
R2, A; 1 byte
MOV
A, XH ; 2 bytes
MOV
B, YL ; 3 bytes
; 1 byte
ADD
A, R1; 1 byte
MOV
R1, A; 1 byte
MOV
A, B ; 2 bytes
ADDC A, R2 ; 1 bytes
MOV
R2, A; 1 byte
MOV
A, XH ; 2 bytes
MOV
B, YH ; 3 bytes
MUL
AB; 1 byte
ADD
A, R2; 1 byte
MOV
R2, A; 1 byte
MOV
A, B ; 2 bytes
ADDC A, #0 ; 2 bytes
MOV
R3, A; 1 byte
1616-bit (MSP430)
MOV R4,&0130h
MOV R5,&0138h
MOV SumLo,R6
MOV SumHi,R7
(Operands are moved to and from a memory
mapped hardware multiply unit)
28
Instructions
Time: 48 clock cycles
Code size: 48 bytes
4
Instructions
Time: 8 clock cycles
Code size: 8 bytes
ARM CortexCortex-M0
MULS r0,r1,r0
1
Instruction
Time: 1 clock cycle
Code size: 2 bytes
13
CoreMark Benchmarks – Code Size
20000
Code Size Comparison
18000
16000
Bytes
14000
12000
10000
8000
6000
4000
2000
LPC1100L
16-bit
MSP430
8-bit
ATMega
http://www.arm.com/products/processors/cortex-m/index.php
http://www.coremark.org
40-50% smaller code size than 8-/16-bit
14
Superior Code Density
64
Instruction Size for
Various Processors
48
32
16
8051
Leading to superior code density:
PIC18
PIC24
MSP430/
MSP430X
Cortex-M0
– In Cortex-M0 all instructions (except
BL) are 16-bit wide instructions
– Over 64K of address space, 8- and
16- processors have to introduce
paging leading to extra overhead in
code
– Efficiency of the Cortex-M0
instruction set (next slide)
15
LPC1100L in Low-Pin-Count Packages
Cortex-M0 Core up to 50 MHz
Lowest Active Current 130 uA/MHz
– (LPC1100XL – 110 uA/MHz)
Memory:
– Up to 32 KB on-chip flash
– Up to 4 KB SRAM
Peripherals
– U(S)art (1), SPI/SSP (1), I2C (1)
– 4x general purpose Timers with PWM
– 10-bit 5-channel ADC
– Programmable WDT and WD Oscillator
– +/- 1 % accuracy, 12 MHz IRC Oscillator
Single power supply (1.8 V to 3.6 V)
SO, TSSOP, DIP package options
16
Important Features for 8/16-bit MCU Customers
Timers with PWM Generation – For each timer, up to four match registers can be
configured as PWM, each timer supports up to three match outputs as single edge
controlled PWM outputs;
Dynamic System Clock Switching – Change frequency on the fly depending on
processing demand. The LPC1100 current consumption at 50 MHz is specified at 7mA.
This can be reduced to a little over 130uA when running at 1 MHz on the low-power
internal oscillator;
Clock Output – Clock output with divider can reflect the system oscillator clock, IRC
clock, CPU clock, and the Watchdog clock. Output can source downstream devices such
as other microcontrollers, CPLD or FPGA;
Interrupt via Any GPIO – Any GPIO pins can be used as Edge and Level Sensitive
interrupt sources;
Programmable Pull Up/Down/Open Drain – Internal pull-up/pull-down resistor,
pseudo open drain or bus keeper function;
Enhanced GPIO Pin Manipulation – Capable of simultaneously reading
Bit/Byte/Word or toggling up to 22 I/Os per instruction
17
Low-Pin-Count Package Options
SO20
TSSOP20
TSSOP28
DIP28
(2 Options)
Final Part Number
SRAM
Flash
Package Pin Count
I2C
SPI
UART
LPC1110FD20
1
4
SO
LPC1111FDH20 /002
2
8
LPC1112FD20 /102
4
LPC1112FDH20 /102
16b Timer 32b Timer
ADC
GPIO
20
1
1
1
2
2
10b, 5ch
16
TSSOP
20
1
1
1
2
2
10b, 5ch
16
16
SO
20
1
1
1
2
2
10b, 5ch
16
4
16
TSSOP
20
0
1
1
2
2
10b, 5ch
14
LPC1112FDH28 /102
4
16
TSSOP
28
1
1
1
2
2
10b, 6ch
22
LPC1114FDH28 /102
4
32
TSSOP
28
1
1
1
2
2
10b, 6ch
22
LPC1114FN28 /102
4
32
DIP
28
1
1
1
2
2
10b, 6ch
22
18
Why Choose LPC Package Devices from NXP
Manufacturing Efficiency and Supply Guarantee
– NXP ships over three billion Low-Pin-Count packages per year, no backend capacity constraints
– High manufacturing efficiency and cost leverage for these MCU devices
Clear Migration Path
– Firmware compatible with other NXP Cortex-M0 devices
– Firmware re-usable when upgrade to NXP Cortex-M3 devices
$0.49 Today
– Low-Pin-Count devices starts at $0.49 for 10Kpc via distribution
19
Targeted Applications
Consumer Electronics
–
–
–
–
Human Input Devices (e.g. mouse)
Simple motor control (e.g. fan control)
Toys
Small appliances
Industrial Control
– Thermostat
– Lighting / Home Security
Medical
– Portable health care products
More…
20
Where to get started?
www.nxp.com/microcontrollers
– MCU homepage
www.nxp.com/lpczone
– Product updates and training
www.nxp.com/lpcxpresso
– Low-cost development
www.lpcware.com
– Engineering community
2
1
21
Objective
Using the LPCXpresso Development Platform, and
familiarity with the LPC1114 device
Integrating the LPC1114 device (DIP package)
onto a breadboard
Build an application where the LPC1114 drives a
10 LED bar graph controlled by a Potentiometer
22
NXP’s Low Cost Development Tool Platform
Eclipse-based IDE
Evaluation
Development Board
Product Development
23
23
LPCXpresso Board
LPC-Link
Target
24
24
LPC-Link
LPC-Link is an integrated JTAG/SWD debug interface based on
LPC3154 (ARM9)
LPC-Link can be used as a standalone JTAG debugger with other LPC
target boards. So, no need for a separate debug probe!
LPC-Link makes it possible for users to experience the same user
interface all the way to final code development and testing
25
25
Evaluate
Explore
LPCXpresso
Development
Stages
Develop
26
26
LPCXpresso Web Support
www.nxp.com/lpcxpresso
– Main page
www.nxp.com/lpcxpresso-support
– NXP examples page, schematics and FAQ
www.nxp.com/lpczone
– Live training modules
www.nxp.com/lpcxpresso-forum
– Support forum for LPCXpresso supported by
NXP and Code Red (main support destination)
www.code-red-tech.com/lpcxpresso
– LPCXpresso IDE downloads and
Code Red knowledgebase
www.embeddedartists.com/lpcxpresso
– Base board schematics and even more example projects
27
Components
Software
– LPCXpresso Development Tool (http://lpcxpresso.code-redtech.com/LPCXpresso/)
– DIP demo-bargraphLED.zip file (software project)
Hardware
– LPC1114 DIP part (qty 1)
– LPC1200 LPCXpresso Board (LPC-LINK debugging module + LPC1227)
(qty 1)
– USB cable (qty 1)
– Breadboard (qty 1)
– Potentiometer (10K) (http://www.sparkfun.com/products/9806) (qty 1)
– 10 Segment LED Bar Graph (http://www.sparkfun.com/products/9935) (qty
1)
– Resistors (qty 3)
– Wires
28
LPC1114FN28/102 Pinout
29
Application Block Diagram
30
Application Board
31
31
Schematics
Note: Please connect ONLY PIO0_1 (pin 24), PIO0_2 (pin 25), PIO0_3 (pin 26) to the LED
bar graph
32
10 Segment LED Bar Graph
LPCXpresso Board
10K Potentiometer
Note: On the LPCXpresso board, on the J4
connector, remove the headers
33
LPCXpresso IDE
Once the hardware is completed, connect the USB from the PC to the
LPC-Link.
Choose install the software automatically (USB Device with DFU
capabilities)
Open LPCXpresso now
34
34
LPCXpresso IDE
Import Project
Select the “Quickstart Pan” tab
In the “Start here” tab
– Select “Import project(s)”
35
35
LPCXpresso IDE
Import Project
Browse to the ASEE folder on
the desktop and select:
“DIP demo-bargraphLED.zip”
“Select All” & “Finish”
36
36
LPCXpresso IDE
Navigating Your Project
Navigate to the “src” folder under “DIP demo”
in the “Project Explorer” view
Open (double-click) “main.c”
37
37
LPCXpresso IDE
LPCXpresso Interface
Project
Project
Explorer
Explorer
Quick
Quick
Start
Start
Editor
Editor
Console
Console
38
38
LPCXpresso IDE
Build Project
Build the project
39
39
LPCXpresso IDE
Debug
Start the debugger
Choose install the software automatically (LPC-Link Debug
Probe v1.1)
The debugger will:
– Activate the Debug View
– Break once inside main()
40
40
Running the Application
Resume
After hitting resume, the
application should be
running….rotate the pot
Suspend, Terminate
41
41
42