AT91SAM7S64C-AU Atmel, AT91SAM7S64C-AU Datasheet - Page 721

• Manufacturer Part Number: AT91SAM7S64C-AU
• Description: IC ARM7 MCU 32BIT 64K 64LQFP
• Manufacturer: Atmel
• Series: AT91SAMr

Specifications of AT91SAM7S64C-AU

• Package / Case: 64-LQFP
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Operating Temperature: -40°C ~ 85°C
• Speed: 55MHz
• Number Of I /o: 32
• Core Processor: ARM7
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Program Memory Size: 64KB (64K x 8)
• Data Converters: A/D 8x10b
• Oscillator Type: Internal
• Peripherals: Brown-out Detect/Reset, DMA, POR, PWM, WDT
• Connectivity: I²C, SPI, SSC, UART/USART, USB
• Core Size: 16/32-Bit
• Core: ARM7TDMI
• Package: 64LQFP
• Device Core: ARM7TDMI
• Family Name: AT91
• Maximum Speed: 55 MHz
• Operating Supply Voltage: 1.8|3.3 V
• Data Bus Width: 32 Bit
• Number Of Programmable I/os: 32
• Interface Type: SPI/TWI/USART/USB
• On-chip Adc: 8-chx10-bit
• Number Of Timers: 3
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Details
• Other names: AT91SAM7S64B-AU::AT91SAM7S64B-AU

40.19.5
40.19.5.1
40.19.5.2
40.19.5.3
40.19.6
40.19.6.1
6175K–ATARM–30-Aug-10
Parallel Input/Output Controller (PIO)
Pulse Width Modulation Controller (PWM)
PIO: Leakage on PA17 - PA20
PIO: Electrical Characteristics on NRST and PA0-PA16 and PA21-31
PIO: Drive Low NRST, PA0-PA16 and PA21-PA31
PWM: Update when PWM_CCNTx = 0 or 1
None.
When PA17, PA18, PA19 or PA20 (the I/O lines multiplexed with the analog inputs) are set as
digital inputs with pull-up disabled, the leakage can be 9 µA in worst case and 90 nA in typical
case per I/O when the I/O is set externally at low level.
Set the I/O to VDDIO by internal or external pull-up.
When NRST or PA0-PA16 or PA21-PA31 are set as digital inputs with pull-up enabled, the volt-
age 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 and 25 µA at 1.8V.
I Leakage
It is recommended to use an external pull-up if needed.
When NRST or PA0-PA16 and or PA21-PA31 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.
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.
Check the Channel Counter Register before writing the update register.
VPull-up Min
VDDIO - 0.65 V
Parameter
I Leakage at 3,3V
I Leakage at 1.8V
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
Problem Fix/Workaround
VPull-up Max
VDDIO - 0.45 V
Typ
2.5
1
µA
µA
Max
45
25
AT91SAM7S Series Preliminary
µA
µA
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