Atmel SMART SAM4C Series User manual

SMART
Atmel-11253A-ATARM-SAM4C32-EK-UserGuide_17-Sep-14
Introduction
The SAM4C32 Evaluation Kit (SAM4C32-EK) enables evaluation capabilities and
code development of applications running on the 32-bit ARM®Cortex®-M4
SAM4C series microcontrollers from Atmel® Corporation.
The SAM4C32-EK can be used with the following microcontrollers:
SAM4C32C
SAM4C16C
SAM4C8C
This document describes the kit contents and architecture, and provides
guidelines on how to use the kit.
Atmel | SMART SAM4C Series
SAM4C32 Evaluation Kit
USER GUIDE

SAM4C32-EK [USER GUIDE]
Atmel-11253A-ATARM-SAM4C32-EK-UserGuide_17-Sep-14
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Kit Contents
SAM4C32-EK Board
Power Supply
Universal input AC/DC power supply with US, Europe and UK plug adapters
3V Lithium Battery type CR1225
Cables
Serial RS232 cable
Micro A/B-type USB cable
Welcome letter
Reference documents
SAM4C Series Datasheet (Atmel literature No. 11102)

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Table of Contents
1. SAM4C32-EK Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Battery. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Recovery Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2. Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Power Up the Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Sample Code and Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3. SAM4C32-EK Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Equipment List. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Function Blocks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Embedded Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.5 Communication Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.6 Debug Interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3.7 Extend Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3.8 LCD Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.9 Analog I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.10 CryptoAuthentication (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.11 LEDs and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.12 Miscellaneous I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.13 Metrology Core Serial Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
3.14 PIO Usage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
3.15 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
4. SAM4C32-EK Firmware Demonstration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.1 SAM4C32-EK Default Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
4.2 Measuring the Backup Mode Current Consumption on VDDBU. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5. SAM4C32-EK Design Files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.1 SAM4C32-EK Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
5.2 SAM4C32-EK Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6. Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

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1. SAM4C32-EK Specifications
The SAM4C32-EK is shipped in a protective anti-static package. The board system
must not be subjected to high electrostatic discharge.
We strongly recommend using a grounding strap or similar ESD protective device when
handling the board in hostile ESD environments (offices with synthetic carpet, for
example). Avoid touching the component pins or any other metallic element on the
board.
1.1 Battery
The SAM4C32-EK ships with a 3V coin battery. This battery is not required for the board to start up as long as
jumper JP8 is closed.
The coin battery is provided for user convenience in case the user would like to exercise the date and time backup
function of the SAM4C32 devices when the board is switched off.
1.2 Recovery Procedure
The demo software is stored in internal Flash memory. If the content of the internal Flash has been erased, it can
be reprogrammed recovered to the state as it was when shipped by Atmel using Atmel SAM-BA®In-system
Programmer available on the Atmel website (www.atmel.com). The binary file of the demo software is also
available on the Atmel website.
Table 1-1. SAM4C32-EK Specifications
Characteristic Specifications
PCB 6 layers, 140 mm x 100 mm
PCB Material Standard FR4 in 1.6 mm thickness
Clock Speed
Crystal 8 MHz
Piezoelectric Ceramic Resonator 8.192 MHz
32.768 kHz external clock
Ports
RS232
RS485
USB
Memory TWI EEPROM
Serial Data Flash
Board Supply Voltage
5V DC from main connector power supply
5V DC from USB
3V Battery for Backup and RTC
ROHS Compliant
CE and FCC Part 15 status Compliant
CAUTION
ESD-Sensitive Electronic Equipment!
Electrostatic
sensitive
device

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2. Power Up
2.1 Power Up the Board
Unpack the board taking care to avoid electrostatic discharge. Unpack the power supply, select the power plug
adapter corresponding to that of your country, and insert it in the power supply.
Connect the power supply DC connector to the board and plug the power supply to an AC power plug. The board
LCD should light up and display a graphic demo program.
2.2 Sample Code and Technical Support
After boot up, designers can run sample code or their own application on the development kit. Users can download
sample code and get technical support from the Atmel website. The SAM4C32-EK is supported by the Atmel
Software Framework (ASF) which is also available on the Atmel website.

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3. SAM4C32-EK Hardware
3.1 Overview
This section introduces the SAM4C32-EK design. It introduces system-level concepts, such as power distribution,
memory, and interface assignments.
The Atmel SAM4C32 microcontroller is a system-on-chip solution for smart energy applications, built around two
high-performance 32-bit ARM Cortex-M4 RISC processors. These devices operate at a maximum speed of 120
MHz and feature up to 2 Mbyte of embedded Flash, 256 Kbytes of SRAM and on-chip cache for each core.
The dual ARM Cortex-M4 architecture allows for integration of application layer, communications layers and
security functions in a single device, with the ability to extend program and data memory via a 16-bit external bus
interface. The peripheral set includes an advanced cryptographic engine, two anti-tamper pins with time-stamping
function, floating point unit (FPU), five USARTs, two UARTs, two TWIs, up to seven SPIs, as well as a PWM timer,
two 3-channel general-purpose 16-bit timers, temperature compensable low-power RTC running on backup area
down to 0.5 µA, and a 50 x 6 segmented LCD controller.
The SAM4C series is a scalable platform providing, alongside Atmel's industry leading SAM4 standard
microcontrollers, unprecedented cost structure, performance and flexibility to smart meter designers worldwide.
Figure 3-1. SAM4C32-EK Board Architecture
SAM4C32C
LQFP100
UART
TO
USB
Serial Debug
AT30TS75
Temperature Sensor
UART1
JTAG
USART2
3V3
LDO
USART0
VDDBU
TWI
XPRO
Extension
LCD
RS485
3V3
FWUP,
Reset
Tamper 0,
Tamper 2
SHDN
1
6
SCROLL UP,
SCROLL DOWN
4-Wire
RS232
2-Wire
RS232
SPI, TWI, UART, ADC,...
SPI 0
RZ600
Wireless
ATSHA204
CryptoAuthentication
(Optional)
AT24C
EEPROM

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3.2 Equipment List
3.2.1 Features List
CPU SAM4C32 with its embedded resources
8 MHz and 32.768 kHz Quartz Crystal, SMB connector for external source
Main regulator 5V/3.3V with red LED indicator
Lithium Coin Cell Battery
Main board with:
Custom segmented LCD
Shared interface RS232 / RS485
Serial data Flash SPI
Two-Wire Serial EEPROM
Two-Wire Temperature Sensor
Two-Wire CryptoAuthentication™ Memory (optional)
Debug solution:
2 peripheral Input/Output extension connectors HE10 (PIO A, B)
Peripheral Input/Output extension connector HE10 (PIO Sense)
JTAG/ICE interface
UART/USB bridge Device Communication interface
Analog
Analog 3V reference
Potentiometer connected on ADC input
Buttons
4 system push buttons: Reset, Force Wake-Up, Tamper 0, Tamper 2
2 user push buttons: Scroll Up and Scroll Down
LEDs
Amber LED
Blue LED
Green LED
3.2.2 Interface Connection
The SAM4C32-EK board includes the following hardware interfaces:
RS232/RS485 (USART0 RX, TX, RTS, CTS) connected to:
9-way male D-type RS232 connector
3-pin connector
JTAG/SWD 20-pin IDC connector
5-pin Micro AB USB connector (bridge UART)
3 PIOs connected to HE10 connectors

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Figure 3-2. Annotated SAM4C32-EK Board Layout
RS232 Interface
Zigbee Interface
System Buttons
Atmel Custom LCD
XPRO Interface
PIO Extension
PIO Extension PIO Metering
Extension
Battery Coin Cell
User Buttons
Atmel SAM4C32
JTAG Interface
Debug Interface
+
Power Supply
RS485 Interface
Power Supply

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3.3 Function Blocks
3.3.1 Processor
The SAM4C32-EK board is equipped with a SAM4C32 device in an LQFP100 package.
Figure 3-3. SAM4C32 Processor
3.3.2 Clock Distribution
The SAM4C32-EK board includes two clock systems (see Table 3-1 and Figure 3-4).
Figure 3-4. Clock System
ATMEL
Cortex-M4 Processor
SAM4C32 LQFP100
R1.R2 should close to SAM4C32.
Do Not Populate
PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 PA8 PA9 PA10 PA11 PA12 PA13 PA14 PA15 PA16 PA17 PA18 PA19 PA20 PA21 PA22 PA23 PA24 PA25 PA26 PA27 PA28 PA29
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
PB16
PB17
PB18
PB19
PB20
PB21
PB22
PB23
PB24
PB25
PB26
PB27
PB28
PB29
PB30
PB31
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PB0
PB1
PB2
PB3
FWUP
PC9
JTAGSEL
SHDN
TST
NRST
XOUT32
XIN32
TMP0
PA31
PA30
XIN
XOUT
VDDIN VDDOUT VDDCORE VDDPLL VDDLCD VDDIO VDDBU
VDDREF
SHDN
{4}
FWUP{7}
TMP0{7}
R2 0R/DNP DNPR2 0R/DNP DNP
R1 0R/DNP DNP R1 0R/DNP DNP
MN1MN1
PB6 1
PB7 2
PB18 3
GND_1
4
PB19 5
PB8 6
PB22 7
PB30 8
PB25 9
PB24 10
VDDCORE_1
11
PB29 12
PB9 13
PB10 14
PB11 15
PB12 16
PB14 17
PB15 18
PA26 19 PA25 20 PA24 21 PA20 22 PA19 23 PA18 24
PA8 25
TDI/PB0
26
TCK/SWCLK/PB3
27 TMS/SWDIO/PB2
28
ERASE/PC9
29
TDO/TRACESWO/PB1
30 PC1 31
PC6 32
VDDIO_1
33
VDDBU
34
FWUP
35
JTAGSEL
36
SHDN
37
TST
38
TMP0
39
XIN32
40
XOUT32
41
GND_2
42
PB4 43
VDDCORE_2
44
PB5 45
PC7 46
PC0 47
NRST
48
VDDIO_2
49
PA30/XOUT
50
PA31/XIN
51
GND_3
52
VDDPLL
53
PC8 54
PC5 55
PC4 56
PC3 57
PC2 58
PA29 59 PA28 60 PA27 61
PA6 62
VDDCORE_3
63
PA3 64
PA21 65 PA22 66 PA23 67
PA9 68
PA10 69 PA11 70 PA13 71 PA14 72 PA15 73 PA16 74 PA17 75
VDDIO_3
76
ADVREF 77
GND_4
78
PB31/AD5 79
PB23/AD4 80
PB13/AD3 81
PA5/AD2 82 PA4/AD1 83
PA12/AD0 84
VDDIN
85
VDDOUT
86
PB21 87
PB20 88
VDDCORE_4
89
PA0 90
PB27 91
VDDLCD
92
PB26 93
PB28 94
PB16 95
PA1 96
PB17 97
PA7 98
VDDIO_4
99
PA2 100
Table 3-1. Components Clock System
Qty Description Component Assignment
1 Crystal for Internal Clock 8 MHz Y2
1 Crystal for RTC Clock 32.768 kHz Y1
XOUT
XIN
C20 18pFC20 18pF
Y2
8MHz
Y2
8MHz
1 2
3
4
R9 0R R9 0R
R6 0RR6 0R
C24 18pFC24 18pF
XIN32
XOUT32
RTC_32
{4}
R4 0RR4 0R
Y1
32.768 kHz
Y1
32.768 kHz
C19
18pF
C19
18pF
R5 0R R5 0R
C1
18pF
C1
18pF
R3 0R/DNP
DNP
R3 0R/DNP
DNP

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3.3.3 Reset and Wake-Up Circuitry
The reset sources for the EK board are:
Power-on reset
Push-button reset (refer to Section 3.11.2 “Push Buttons”)
JTAG reset from an in-circuit emulator
3.3.4 Power Supplies
The SAM4C32-EK board evaluation and development platform embeds all the necessary power rails required for
the SAM4C32 processor and peripherals.
The SAM4C32-EK board can be supplied by either a 5V DC block through input J2 (see Figure 3-5) or a USB
connection via J6 (refer to “DBGU/USB Bridge Schematic” on page 15).
A manual power supply selection switch (SW1) is provided to power on/off the main power line.
Figure 3-5. Power Supply Schematic
3.3.5 Power Rails
The SAM4C32 supports 1.6V–3.6V single supply mode (VDDIN). An internal regulator input is connected to the
source and its output feeds VDDCORE (VDDOUT connected to VDDCORE).
When the 3.3V supply is present, the Power LED D5 is lit. Test points TP2 to TP5 are used to perform testing.
USB5V
U1
ZEN056V130A24LS
U1
ZEN056V130A24LS
1
2
3
J2
TWTJ-020-04P2
J2
1
2
3
D2
NSR0320MW2T1G
D2
NSR0320MW2T1G
D3
NSR0320MW2T1G
D3
NSR0320MW2T1G
5V
TP4TP4
C29
100nF
C29
SW1
8SS1012-Z
SW1
3
1
2
R12 1.5KR12
C31C31
C30
10µF
C30
10µF
Table 3-2. Power Supply Voltage Ranges
Power Supply Ranges Comments
VDDIO 1.6V–3.6V
Flash Memory Charge Pumps Supply for Erase and Program Operations, and Read
operation
Input Output buffers Supply
VDDBU 1.6V–3.6V Backup Area power supply. VDDBU is automatically disconnected when VDDIO is present
(> 1.9V)
VDDIN 1.6V–3.6V 1.6V min. if LCD and ADC not used, 2.5V otherwise
VDDLCD 2.5V–3.6V
LCD Voltage Regulator Output
External LCD power supply input (LCD regulator not used)
VDDIO/VDDIN need to be supplied when the LCD Controller is used
VDDOUT 1.2V Output 120 mA Output Current
VDDPLL 1.08V–1.32V –
VDDCORE 1.08V–1.32V –