AT91SAM7S64B-AU Atmel, AT91SAM7S64B-AU Datasheet - Page 13

• Manufacturer Part Number: AT91SAM7S64B-AU
• Description: IC ARM7 MCU 32BIT 64K 64LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S64B-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 64-LQFP
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7S-EK - KIT EVAL FOR ARM AT91SAM7S
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: AT91SAM7S64C-AU; AT91SAM7S64C-AU

5.4
6175IS–ATARM–30-Aug-10
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 AT91SAM7S Series supports a 3.3V single supply mode. The internal regulator is con-
nected to the 3.3V source and its output feeds VDDCORE and the VDDPLL.
the power schematics to be used for USB bus-powered systems.
Figure 5-1.
3.3V System Single Power Supply Schematic
from 4.5V (USB)
Power Source
ranges
to 18V
DC/DC Converter
AT91SAM7S Series Summary
3.3V
VDDFLASH
VDDCORE
VDDOUT
VDDPLL
VDDIO
VDDIN
Regulator
Voltage
Figure 5-1
shows
13