AT91SAM7A3-AU Atmel, AT91SAM7A3-AU Datasheet - Page 573

• Manufacturer Part Number: AT91SAM7A3-AU
• Description: IC ARM7 MCU FLASH 256K 100LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7A3-AU

• Core Processor: ARM7
• Core Size: 16/32-Bit
• Speed: 60MHz
• Connectivity: CAN, I²C, MMC, SPI, SSC, UART/USART
• Peripherals: POR, PWM, WDT
• Number Of I /o: 62
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 32K 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: 100-LQFP
• Controller Family/series: AT91SAM7xx
• No. Of I/o's: 62
• Ram Memory Size: 32KB
• Cpu Speed: 60MHz
• No. Of Timers: 3
• Rohs Compliant: Yes
• Package: 100LQFP
• Device Core: ARM7TDMI
• Family Name: 91S
• Maximum Speed: 60 MHz
• Operating Supply Voltage: 3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 62
• Interface Type: CAN/SPI/I2S/TWI/USART/USB
• On-chip Adc: 2(8-chx10-bit)
• Number Of Timers: 3
• Processor Series: AT91SAMx
• Core: ARM7TDMI
• Data Ram Size: 32 KB
• Maximum Clock Frequency: 60 MHz
• 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, AT91SAM7A3-EK
• Minimum Operating Temperature: - 40 C
• Cpu Family: 91S
• Device Core Size: 32b
• Frequency (max): 60MHz
• Total Internal Ram Size: 32KB
• # I/os (max): 62
• Number Of Timers - General Purpose: 3
• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (max): 3.6V
• Operating Supply Voltage (min): 3V
• Instruction Set Architecture: RISC
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 100
• Package Type: LQFP
• For Use With: AT91SAM-ICE - EMULATOR FOR AT91 ARM7/ARM9AT91SAM7A3-EK - KIT EVAL FOR AT91SAM7A3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details

40.2.2.2
40.2.2.3
40.2.3
40.2.3.1
40.2.4
40.2.4.1
40.2.4.2
6042E–ATARM–14-Dec-06
Power Management Controller (PMC)
Pulse Width Modulation (PWM) Controller
PIO: Electrical Characteristics PA0-PA31 and PB0-PB13
PIO: Drive Low PA0-PA31 and PB0-PB13
PMC: Main Oscillator Measure in Bypass Mode
PWM: Constraints on Duty Cycle Value
PWM: Update when PWM_CCNTx = 0 or 1
When PA0-PA31 or PB0-PB13 are set as digital inputs with pull-up enabled, the voltage of the
I/O stabilizes at VPull-up.
Vpull-up
This condition causes a leakage through VDDIO. This leakage is 45 µA per pad in worst case at
3.3 V.
I Leakage
It is recommended to use an external pull-up if needed.
When NRST or PA0-PA31 and or PB0-PB13 are set as digital inputs with pull-up enabled, driv-
ing the I/O with an output impedance higher than 500 ohms may not drive the I/O to a logical
zero.
Output impedance must be lower than 500 ohms.
It is not possible to measure the main oscillator in bypass mode (number of Main Clock cycles
during 16 periods of slow clock set in CKGR_MCFR). Measurement is possible with an external
crystal.
None.
A value of 0 is forbidden in the Channel Duty Cycle Register (PWM_CDTYx).
0 corresponds to a permanent high or low signal. The PIO controller may ensure this level when
needed by disabling PWM, and using the corresponding I/O as an output with a value 0 or 1.
If the Channel Counter Register value is 0 or 1, the Channel Period Register or Channel Duty
Cycle Register is directly modified when writing the Channel Update Register.
VPull-up Min
VDDIO - 0.65 V
Parameter
I Leakage at 3.3V
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
VPull-up Max
VDDIO - 0.45 V
Typ
2.5
µA
Max
45
µA
AT91SAM7A3 Preliminary
573