SAM7XC512 Atmel Corporation, SAM7XC512 Datasheet - Page 13

• Manufacturer Part Number: SAM7XC512
• Manufacturer: Atmel Corporation

Specifications of SAM7XC512

• Flash (kbytes): 512 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 55 MHz
• Cpu: ARM7TDMI
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 62
• Ext Interrupts: 62
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 2
• Twi (i2c): 1
• Uart: 3
• Can: 1
• Ssc: 1
• Ethernet: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Resolution (bits): No
• Temp. Sensor: No
• Crypto Engine: AES/DES
• Sram (kbytes): 128
• Self Program Memory: NO
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.3
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 3
• Input Capture Channels: 3
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

5.4
6209DS–ATARM–17-Feb-09
Typical Powering Schematics
Adequate input supply decoupling is mandatory for VDDIN in order to improve startup stability
and reduce source voltage drop. The input decoupling capacitor should be placed close to the
chip. For example, two capacitors can be used in parallel: 100 nF NPO and 4.7 µF X7R.
The AT91SAM7XC512/256/128 supports a 3.3V single supply mode. The internal regulator
input connected to the 3.3V source and its output feeds VDDCORE and the VDDPLL.
1
Figure 5-1.
shows the power schematics to be used for USB bus-powered systems.
3.3V System Single Power Supply Schematic
from 4.5V (USB)
Power Source
ranges
to 18V
DC/DC Converter
3.3V
AT91SAM7XC512/256/128
VDDFLASH
VDDCORE
VDDOUT
VDDPLL
VDDIO
VDDIN
Regulator
Voltage
Figure 5-
13