参数资料
型号: AT91SAM7X-EK
厂商: Atmel
文件页数: 6/44页
文件大小: 0K
描述: KIT EVAL FOR AT91SAM7X256/128
产品培训模块: AT91SAM7X and SAM7XC Flash-based Microcontrollers
MCU Product Line Introduction
标准包装: 1
系列: AT91SAM 智能 ARM
类型: MCU
适用于相关产品: AT91SAM7X256,AT91SAM7X128
所含物品: 板,线缆,DVD,电源
相关产品: AT91SAM7X256-CU-999-ND - IC MCU ARM7 256KB FLASH 100TFBGA
AT91SAM7X128-CU-999-ND - IC MCU ARM7 128KB FLASH 100TFBGA
AT91SAM7X128-AU-999-ND - IC MCU ARM7 128KB FLASH 100LQFP
AT91SAM7X512-CU-ND - MCU ARM 512K HS FLASH 100-TFBGA
AT91SAM7X512-AU-ND - MCU ARM 512K HS FLASH 100-LQFP
AT91SAM7X256-CU-ND - MCU ARM 256K HS FLASH 100-TFBGA
AT91SAM7X128-CU-ND - MCU ARM 128K HS FLASH 100-TFBGA
AT91SAM7X256-AU-999TR-ND - IC ARM7 MCU 256K FLASH 100-LQFP
AT91SAM7X256-AU-ND - IC ARM7 MCU FLASH 256K 100LQFP
AT91SAM7X128-AU-ND - IC ARM7 MCU FLASH 128K 100LQFP
14
6120GS–ATARM–07-Apr-11
SAM7X512/256/128 Summary
6.5
PIO Controller Lines
All the I/O lines, PA0 to PA30 and PB0 to PB30, are 5V-tolerant and all integrate a programma-
ble pull-up resistor. Programming of this pull-up resistor is performed independently for each I/O
line through the PIO controllers.
5V-tolerant means that the I/O lines can drive voltage level according to VDDIO, but can be
driven with a voltage of up to 5.5V. However, driving an I/O line with a voltage over VDDIO while
the programmable pull-up resistor is enabled will create a current path through the pull-up resis-
tor from the I/O line to VDDIO. Care should be taken, in particular at reset, as all the I/O lines
default to input with pull-up resistor enabled at reset.
6.6
I/O Lines Current Drawing
The PIO lines PA0 to PA3 are high-drive current capable. Each of these I/O lines can drive up to
16 mA permanently.
The remaining I/O lines can draw only 8 mA.
However, the total current drawn by all the I/O lines cannot exceed 200 mA.
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