AT91SAM7SE32-CU-999 Atmel, AT91SAM7SE32-CU-999 Datasheet - Page 14

• Manufacturer Part Number: AT91SAM7SE32-CU-999
• Description: IC MCU ARM7 32KB FLASH 144LFBGA
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7SE32-CU-999

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 55MHz
• Connectivity: EBI/EMI, I²C, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 88
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K 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: 144-LFBGA
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Bus Width: 32 bit
• Data Ram Size: 8 KB
• Interface Type: EBI, SPI, TWI, USART
• Maximum Clock Frequency: 55 MHz
• Number Of Programmable I/os: 88
• Number Of Timers: 3
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-ARM-2M, KSK-AT91SAM7S-PL, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: AT91SAM-ICE, AT91-ISP, AT91SAM7SE-EK
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 10 bit, 8 Channel
• For Use With: AT91SAM7SE-EK - EVAL BOARD FOR AT91SAM7SEAT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

5.4
14
Typical Powering Schematics
AT91SAM7SE512/256/32 Preliminary
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 AT91SAM7SE512/256/32 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.
shows the power schematics to be used for USB bus-powered systems.
Figure 5-1.
• One external 470 pF (or 1 nF) NPO capacitor should be connected between VDDOUT and
• One external 2.2 µF (or 3.3 µF) X7R capacitor should be connected between VDDOUT and
GND as close to the chip as possible.
GND.
3.3V System Single Power Supply Schematic
from 4.5V (USB)
Power Source
ranges
to 18V
DC/DC Converter
3.3V
VDDFLASH
VDDIO
VDDIN
VDDOUT
VDDCORE
VDDPLL
Regulator
Voltage
6222ES–ATARM–15-Dec-09
Figure 5-1