at91sam7l128 ATMEL Corporation, at91sam7l128 Datasheet - Page 20

• Manufacturer Part Number: at91sam7l128
• Description: At91 Arm Thumb-based Microcontroller
• Manufacturer: ATMEL Corporation

6.6
6.7
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PIO Controller Lines
I/O Line Current Drawing
AT91SAM7L128/64 Preliminary
All the I/O lines; PA0 to PA25, PB0 to PB23, PC0 to PC29 integrate a programmable pull-up
resistor. Programming of this pull-up resistor is performed independently for each I/O line
through the PIO controllers. All I/Os have input schmitt triggers.
Typical pull-up value is 100 kΩ.
Maximum frequency is:
The PIO lines PC5 to PC8 are high-drive current capable. Each of these I/O lines can drive up to
4 mA permanently. The remaining I/O lines can draw only 2 mA.
Each I/O is designed to achieve very small leakage. However, the total current drawn by all the
I/O lines cannot exceed 150 mA.
• 36 MHz under 25 pF of load on PIOC
• 36 MHz under 25 pF of load on PIOA and PIOB
6257AS–ATARM–28-Feb-08