AT91SAM9G20B-CFU Atmel, AT91SAM9G20B-CFU Datasheet - Page 27

• Manufacturer Part Number: AT91SAM9G20B-CFU
• Description: IC MCU ARM9 247-LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM9G20B-CFU

• Core Processor: ARM9
• Core Size: 16/32-Bit
• Speed: 400MHz
• Connectivity: EBI/EMI, Ethernet, I²C, IrDA, ISI, MMC, SPI, SSC, UART/USART, USB
• Peripherals: DMA, POR, PWM, WDT
• Number Of I /o: 96
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: ROM
• Ram Size: 96K x 8
• Voltage - Supply (vcc/vdd): 0.9 V ~ 1.1 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 247-TFBGA
• Processor Series: AT91SAMx
• Core: ARM926EJ-S
• Data Bus Width: 32 bit
• Data Ram Size: 16 KB
• Interface Type: SPI, TWI, UART
• Maximum Clock Frequency: 400 MHz
• Number Of Programmable I/os: 96
• Operating Supply Voltage: 3.3 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM9G20-EK
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

9.6
9.7
9.8
9.9
9.10
6384DS–ATARM–13-Jan-10
Periodic Interval Timer
Watchdog Timer
Real-time Timer
General-purpose Back-up Registers
Advanced Interrupt Controller
Figure 9-3.
• Includes a 20-bit Periodic Counter, with less than 1 µs accuracy
• Includes a 12-bit Interval Overlay Counter
• Real Time OS or Linux
• 16-bit key-protected only-once-Programmable Counter
• Windowed, prevents the processor being in a dead-lock on the watchdog access
• Real-time Timer 32-bit free-running back-up Counter
• Integrates a 16-bit programmable prescaler running on slow clock
• Alarm Register capable of generating a wake-up of the system through the Shutdown
• Four 32-bit backup general-purpose registers
• Controls the interrupt lines (nIRQ and nFIQ) of the ARM Processor
• Thirty-two individually maskable and vectored interrupt sources
Controller
PLLBCK
MAINCK
PLLACK
SLCK
AT91SAM9G20 Power Management Controller Block Diagram
Master Clock Controller
/1,/2,/4,.../64
®
Prescaler
/Windows CE
MAINCK
PLLACK
PLLBCK
PLLBCK
SLCK
Programmable Clock Controller
®
/1,/2,/4,/6
Divider
compliant tick generator
Divider
USB Clock Controller
/1,/2
Divider
/1,/2,/4
/1,/2,/4,...,/64
AT91SAM9G20 Summary
Prescaler
Clock Controller
Processor
Controller
ON/OFF
Idle Mode
ON/OFF
Clock
Peripherals
ON/OFF
PCK
int
MCK
periph_clk[..]
pck[..]
UDPCK
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