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PDF SAMG54N Data sheet ( Hoja de datos )
| Número de pieza | SAMG54N | |
| Descripción | SMART ARM-based Flash MCU | |
| Fabricantes | ATMEL Corporation | |
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SAM G54G / SAM G54N
Atmel | SMART ARM-based Flash MCU
DATASHEET
Description
The Atmel® | SMART SAM G54 is a series of Flash microcontrollers based on the
high-performance 32-bit ARM® Cortex®-M4 RISC processor. They operate at a
maximum speed of 96 MHz and feature up to 512 Kbytes of Flash and 96 Kbytes
of SRAM. The peripheral set includes one USART, two UARTs, three I2C-bus
interfaces (TWI), up to two SPIs, two three-channel general-purpose 16-bit timers,
two I2S controllers with two-way, one-channel pulse density modulation, one real-
time timer (RTT), one real-time clock (RTC) and one 8-channel 12-bit ADC.
The Atmel | SMART SAM G54 devices have two software-selectable low-power
modes: Sleep and Wait. In Sleep mode, the processor is stopped while all other
functions can be kept running. In Wait mode, all clocks and functions are stopped
but some peripherals can be configured to wake up the system based on
predefined conditions. This feature, called SleepWalking, performs a partial
asynchronous wake-up, thus allowing the processor to wake up only when
needed.
The Event System allows peripherals to receive, react to and send events in
Active and Sleep modes without processor intervention.
A general-purpose microcontroller with the best ratio in terms of reduced power
consumption, processing power and peripheral set, the SAM G54 series sustains
a wide range of applications including consumer, industrial control, and PC
peripherals.
The device operates from 1.62V to 3.45V and is available in a 49-ball WLCSP
package and a 100-pin LQFP package.
Atmel-11266A-ATARM-SAM-G54G-SAM-G54N-Datasheet_16-Dec-14
1 page  
2. Block Diagram
Figure 2-1. SAM G54 Block Diagram
TST
PCK[2:0]
WKUP[15:0]
XIN
XOUT
XIN32
XOUT32
ERASE
VDDIO
VDDCORE
NRST
PLL
RC OSC
8/16/24 MHz
Power
Management
Controller
3-20 MHz
Oscillator
Supply
Controller
Tamper Detection
32K OSC
32K RC
Power-on
Reset
8 General-purpose
Backup Registers
Real-time
Clock
Real-time
Timer
Watchdog
Timer
Reset
Controller
Supply
Monitor
PIOA/PIOB
System Controller
JTAG and Serial Wire
In-Circuit Emulator
Cortex-M4 Processor
fMAX 96 MHz
DSP
MPU
NVIC
24-bit SysTick
Counter
FPU
I/D S
MM
3-layer AHB Bus Matrix
fMAX 96 MHz
SM
S
S
S
AHB/APB
Bridge
PDC
Voltage
Regulator
Flash
Unique
Identifier
User
Signature
Flash
512 Kbytes
SRAM
96 Kbytes
ROM(1)
8 Kbytes
PDMDAT0
PDMCLK0
I2SCK[1:0]
I2SWS[1:0]
I2SDI[1:0]
I2SDO[1:0]
I2SMCK[1:0]
SCK
TXD
RXD
RTS
CTS
URXD[1:0]
UTXD[1:0]
PDC
PDMIC0
PDMIC1 PDC
PDC
2 x I2SC
PDC
USART
PDC
2 x UART
AD[7:0]
ADTRG
VDDIO
PDC
12-bit ADC
Event
System
Note: 1. The ROM is reserved for future use.
PDC
SPI
PDC
3 x TWI
PDC Timer Counter A
TC[0..2]
Timer Counter B
TC[3..5]
NPCS0
NPCS1
MISO
MOSI
SPCK
TWCK[2:0]
TWD[2:0]
TCLK[2:0]
TIOA[2:0]
TIOB[2:0]
SAM G54G / SAM G54N [DATASHEET]
Atmel-11266A-ATARM-SAM-G54G-SAM-G54N-Datasheet_16-Dec-14
5
5 Page 
5. Power Considerations
5.1 Power Supplies
The SAM G54 has the following power supply pins:
VDDCORE pins: Power the core, including the processor, the embedded memories and the peripherals.
VDDCORE must be connected to VDDOUT.
VDDIO pins: Power the peripheral I/O lines, voltage regulator and ADC; voltage ranges from 1.62V to 3.45V.
The ground pins GND are common to VDDCORE and VDDIO.
5.2 Voltage Regulator
The SAM G54 embeds a core voltage regulator that is managed by the Supply Controller and that supplies the
Cortex-M4 core, internal memories (SRAM and Flash logic) and the peripherals. An internal adaptative biasing
adjusts the regulator quiescent current depending on the required load current.
For adequate input and output power supply decoupling/bypassing, refer to Table 36-4 “VDDCORE Voltage
Regulator Characteristics,” in the Electrical Characteristics section of the datasheet.
The voltage regulator is factory-trimmed to guarantee that the system runs up to 48 MHz.
To allow the system to run at a frequency above 48 MHz, the voltage regulator must be scaled. This is done by
following the steps below:
1. Read the user signature page to get the trim value for Active mode depending on VVDDIO. Refer to Section
8.2.1.5 “Unique Identifier”.
2. In the Supply Controller Mode register (SUPC_MR), write this value in the field VRVDD.
3. In the SUPC_MR, write a one to the bit VDDSEL.
The voltage regulator can also be scaled down to save power before entering Wait mode. This is done by following
the steps below:
1. Configure the device to run at a frequency equal to or less than 48 MHz. This can be done by switching on
the fast RC.
2. Configure the regulator to use the default trim value by writing a zero to the bit VDDSEL in the SUPC_MR.
3. Read the user signature page to get the trim value for Wait mode depending on VVDDIO. Refer to Section
8.2.1.5 “Unique Identifier”.
4. In the SUPC_MR, write this value in the VRVDD field.
5. Enter Wait mode.
SAM G54G / SAM G54N [DATASHEET]
Atmel-11266A-ATARM-SAM-G54G-SAM-G54N-Datasheet_16-Dec-14
11
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet SAMG54N.PDF ] | |
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