Features
•
Incorporates the ARM7TDMI
®
ARM
®
Thumb
®
Processor
– High-performance 32-bit RISC Architecture
– High-density 16-bit Instruction Set
• Leader in MIPS/Watt
– EmbeddedICE
™
In-circuit Emulation, Debug Communication Channel Support
Internal High-speed Flash
– 512 Kbytes (SAM7X512) Organized in Two Banks of 1024 Pages of
256 Bytes (Dual Plane)
– 256 Kbytes (SAM7X256) Organized in 1024 Pages of 256 Bytes (Single Plane)
– 128 Kbytes (SAM7X128) Organized in 512 Pages of 256 Bytes (Single Plane)
• Single Cycle Access at Up to 30 MHz in Worst Case Conditions
• Prefetch Buffer Optimizing Thumb Instruction Execution at Maximum Speed
• Page Programming Time: 6 ms, Including Page Auto-erase,
Full Erase Time: 15 ms
• 10,000 Write Cycles, 10-year Data Retention Capability,
Sector Lock Capabilities, Flash Security Bit
• Fast Flash Programming Interface for High Volume Production
Internal High-speed SRAM, Single-cycle Access at Maximum Speed
– 128 Kbytes (SAM7X512)
– 64 Kbytes (SAM7X256)
– 32 Kbytes (SAM7X128)
Memory Controller (MC)
– Embedded Flash Controller, Abort Status and Misalignment Detection
Reset Controller (RSTC)
– Based on Power-on Reset Cells and Low-power Factory-calibrated Brownout
Detector
– Provides External Reset Signal Shaping and Reset Source Status
Clock Generator (CKGR)
– Low-power RC Oscillator, 3 to 20 MHz On-chip Oscillator and one PLL
Power Management Controller (PMC)
– Power Optimization Capabilities, Including Slow Clock Mode (Down to 500 Hz) and
Idle Mode
– Four Programmable External Clock Signals
Advanced Interrupt Controller (AIC)
– Individually Maskable, Eight-level Priority, Vectored Interrupt Sources
– Two External Interrupt Sources and One Fast Interrupt Source, Spurious Interrupt
Protected
Debug Unit (DBGU)
– 2-wire UART and Support for Debug Communication Channel interrupt,
Programmable ICE Access Prevention
– Mode for General Purpose 2-wire UART Serial Communication
Periodic Interval Timer (PIT)
– 20-bit Programmable Counter plus 12-bit Interval Counter
Windowed Watchdog (WDT)
– 12-bit key-protected Programmable Counter
– Provides Reset or Interrupt Signals to the System
– Counter May Be Stopped While the Processor is in Debug State or in Idle Mode
•
AT91SAM
ARM-based
Flash MCU
SAM7X512
SAM7X256
SAM7X128
•
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6120I–ATARM–06-Apr-11
•
Real-time Timer (RTT)
– 32-bit Free-running Counter with Alarm
– Runs Off the Internal RC Oscillator
Two Parallel Input/Output Controllers (PIO)
– Sixty-two Programmable I/O Lines Multiplexed with up to Two Peripheral I/Os
– Input Change Interrupt Capability on Each I/O Line
– Individually Programmable Open-drain, Pull-up Resistor and Synchronous Output
Thirteen Peripheral DMA Controller (PDC) Channels
One USB 2.0 Full Speed (12 Mbits per second) Device Port
– On-chip Transceiver, 1352-byte Configurable Integrated FIFOs
One Ethernet MAC 10/100 base-T
– Media Independent Interface (MII) or Reduced Media Independent Interface (RMII)
– Integrated 28-byte FIFOs and Dedicated DMA Channels for Transmit and Receive
One Part 2.0A and Part 2.0B Compliant CAN Controller
– Eight Fully-programmable Message Object Mailboxes, 16-bit Time Stamp Counter
One Synchronous Serial Controller (SSC)
– Independent Clock and Frame Sync Signals for Each Receiver and Transmitter
– I²S Analog Interface Support, Time Division Multiplex Support
– High-speed Continuous Data Stream Capabilities with 32-bit Data Transfer
Two Universal Synchronous/Asynchronous Receiver Transmitters (USART)
– Individual Baud Rate Generator, IrDA
®
Infrared Modulation/Demodulation
– Support for ISO7816 T0/T1 Smart Card, Hardware Handshaking, RS485 Support
– Full Modem Line Support on USART1
Two Master/Slave Serial Peripheral Interfaces (SPI)
– 8- to 16-bit Programmable Data Length, Four External Peripheral Chip Selects
One Three-channel 16-bit Timer/Counter (TC)
– Three External Clock Inputs, Two Multi-purpose I/O Pins per Channel
– Double PWM Generation, Capture/Waveform Mode, Up/Down Capability
One Four-channel 16-bit Power Width Modulation Controller (PWMC)
One Two-wire Interface (TWI)
– Master Mode Support Only, All Two-wire Atmel EEPROMs and I
2
C Compatible Devices Supported
One 8-channel 10-bit Analog-to-Digital Converter, Four Channels Multiplexed with Digital I/Os
SAM-BA
®
Boot Assistance
– Default Boot program
– Interface with SAM-BA Graphic User Interface
IEEE
®
1149.1 JTAG Boundary Scan on All Digital Pins
5V-tolerant I/Os, Including Four High-current Drive I/O lines, Up to 16 mA Each
Power Supplies
– Embedded 1.8V Regulator, Drawing up to 100 mA for the Core and External Components
– 3.3V VDDIO I/O Lines Power Supply, Independent 3.3V VDDFLASH Flash Power Supply
– 1.8V VDDCORE Core Power Supply with Brownout Detector
Fully Static Operation: Up to 55 MHz at 1.65V and 85° C Worst Case Conditions
Available in 100-lead LQFP Green and 100-ball TFBGA Green Packages
•
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2
SAM7X512/256/128
6120I–ATARM–06-Apr-11
SAM7X512/256/128
1. Description
Atmel's SAM7X512/256/128 is a member of a series of highly integrated Flash microcontrollers
based on the 32-bit ARM RISC processor. It features 512/256/128 Kbyte high-speed Flash and
128/64/32 Kbyte SRAM, a large set of peripherals, including an 802.3 Ethernet MAC and a CAN
controller. A complete set of system functions minimizes the number of external components.
The embedded Flash memory can be programmed in-system via the JTAG-ICE interface or via
a parallel interface on a production programmer prior to mounting. Built-in lock bits and a secu-
rity bit protect the firmware from accidental overwrite and preserve its confidentiality.
The SAM7X512/256/128 system controller includes a reset controller capable of managing the
power-on sequence of the microcontroller and the complete system. Correct device operation
can be monitored by a built-in brownout detector and a watchdog running off an integrated RC
oscillator.
By combining the ARM7TDMI processor with on-chip Flash and SRAM, and a wide range of
peripheral functions, including USART, SPI, CAN Controller, Ethernet MAC, Timer Counter, RTT
and Analog-to-Digital Converters on a monolithic chip, the SAM7X512/256/128 is a powerful
device that provides a flexible, cost-effective solution to many embedded control applications
requiring communication over, for example, Ethernet, CAN wired and Zigbee
™
wireless
networks.
1.1
Configuration Summary of the SAM7X512/256/128
The SAM7X512, SAM7X256 and SAM7X128 differ only in memory sizes.
Table 1-1
summarizes
the configurations of the three devices.
Table 1-1.
Device
SAM7X512
SAM7X256
SAM7X128
Configuration Summary
Flash
512 Kbytes
256 Kbytes
128 Kbytes
Flash
Organization
dual plane
single plane
single plane
SRAM
128 Kbytes
64 Kbytes
32 Kbytes
3
6120I–ATARM–06-Apr-11
2. SAM7X512/256/128 Block Diagram
Figure 2-1.
TDI
TDO
TMS
TCK
JTAGSEL
SAM7X512/256/128 Block Diagram
JTAG
SCAN
ICE
ARM7TDMI
Processor
1.8 V
Voltage
Regulator
VDDIN
GND
VDDOUT
VDDCORE
TST
FIQ
System Controller
AIC
PIO
IRQ0-IRQ1
Memory Controller
PDC
PDC
VDDIO
DRXD
DTXD
DBGU
Embedded
Flash
Controllers
Abort
Status
SRAM
128/64/32 Kbytes
Address
Decoder
Misalignment
Detection
PCK0-PCK3
PLLRC
XIN
XOUT
VDDFLASH
PLL
OSC
RCOSC
PMC
Peripheral Bridge
Flash
512/256/128
Kbytes
ERASE
VDDCORE
VDDFLASH
VDDCORE
NRST
BOD
POR
Reset
Controller
Peripheral DMA
Controller
13 Channels
ROM
Fast Flash
Programming
Interface
PGMRDY
PGMNVALID
PGMNOE
PGMCK
PGMM0-PGMM3
PGMD0-PGMD15
PGMNCMD
PGMEN0-PGMEN1
PIT
APB
WDT
RTT
PIOA
RXD0
TXD0
SCK0
RTS0
CTS0
RXD1
TXD1
SCK1
RTS1
CTS1
DCD1
DSR1
DTR1
RI1
SPI0_NPCS0
SPI0_NPCS1
SPI0_NPCS2
SPI0_NPCS3
SPI0_MISO
SPI0_MOSI
SPI0_SPCK
SPI1_NPCS0
SPI1_NPCS1
SPI1_NPCS2
SPI1_NPCS3
SPI1_MISO
SPI1_MOSI
SPI1_SPCK
ADTRG
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
ADVREF
SAM-BA
DMA
FIFO
Ethernet MAC 10/100
PDC
PIOB
USART0
PDC
PDC
FIFO
Transceiver
ETXCK-ERXCK-EREFCK
ETXEN-ETXER
ECRS-ECOL, ECRSDV
ERXER-ERXDV
ERX0-ERX3
ETX0-ETX3
EMDC
EMDIO
EF100
VDDFLASH
DDM
DDP
USART1
USB Device
PIO
PDC
PDC
PWMC
PDC
SPI0
PDC
PDC
SSC
PDC
Timer Counter
SPI1
TC0
PDC
PDC
TC1
TC2
ADC
TWI
CAN
PWM0
PWM1
PWM2
PWM3
TF
TK
TD
RD
RK
RF
TCLK0
TCLK1
TCLK2
TIOA0
TIOB0
TIOA1
TIOB1
TIOA2
TIOB2
TWD
TWCK
CANRX
CANTX
PIO
4
SAM7X512/256/128
6120I–ATARM–06-Apr-11
PIO
SAM7X512/256/128
3. Signal Description
Table 3-1.
Signal Name
Signal Description List
Function
Power
Type
Active
Level
Comments
VDDIN
VDDOUT
VDDFLASH
VDDIO
VDDCORE
VDDPLL
GND
Voltage Regulator and ADC Power
Supply Input
Voltage Regulator Output
Flash and USB Power Supply
I/O Lines Power Supply
Core Power Supply
PLL
Ground
Power
Power
Power
Power
Power
Power
Ground
3V to 3.6V
1.85V
3V to 3.6V
3V to 3.6V
1.65V to 1.95V
1.65V to 1.95V
Clocks, Oscillators and PLLs
XIN
XOUT
PLLRC
PCK0 - PCK3
Main Oscillator Input
Main Oscillator Output
PLL Filter
Programmable Clock Output
Input
Output
Input
Output
ICE and JTAG
TCK
TDI
TDO
TMS
JTAGSEL
Test Clock
Test Data In
Test Data Out
Test Mode Select
JTAG Selection
Input
Input
Output
Input
Input
Flash Memory
ERASE
Flash and NVM Configuration Bits Erase
Command
Reset/Test
NRST
TST
Microcontroller Reset
Test Mode Select
Debug Unit
DRXD
DTXD
Debug Receive Data
Debug Transmit Data
AIC
IRQ0 - IRQ1
FIQ
External Interrupt Inputs
Fast Interrupt Input
PIO
PA0 - PA30
PB0 - PB30
Parallel IO Controller A
Parallel IO Controller B
I/O
I/O
Pulled-up input at reset
Pulled-up input at reset
Input
Input
Input
Output
I/O
Input
Low
High
Pull-up resistor, Open Drain
Output
Pull-down resistor
(1)
Input
High
Pull-down resistor
(1)
No pull-up resistor
Pull-down resistor
(1)
No pull-up resistor
No pull-up resistor
5
6120I–ATARM–06-Apr-11
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