ATSAM3S 查看數據表（PDF） - Atmel Corporation

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ATSAM3S

AT91SAM ARM-based Flash MCU

Atmel Corporation 

Table 3-1. Signal Description List (Continued)

Signal Name

Function

Type

Active Voltage

Level reference Comments

Fast Flash Programming Interface - FFPI

PGMEN0-PGMEN2 Programming Enabling

Input

VDDIO

PGMM0-PGMM3 Programming Mode

Input

PGMD0-PGMD15 Programming Data

I/O

PGMRDY

Programming Ready

Output

High

PGMNVALID

Data Direction

Output

Low

VDDIO

PGMNOE

Programming Read

Input

Low

PGMCK

Programming Clock

Input

PGMNCMD

Programming Command

Input

Low

USB Full Speed Device

DDM

DDP

USB Full Speed Data -

USB Full Speed Data +

Analog,

Digital

VDDIO

Reset State:

- USB Mode

- Internal Pull-down(3)

Notes: 1. Schmitt Triggers can be disabled through PIO registers.

2. Some PIO lines are shared with System IOs.

3. Refer to the USB sub section in the product Electrical Characteristics Section for Pull-down value in USB Mode.

4. See Section 5.3 “Typical Powering Schematics” for restriction on voltage range of Analog Cells.

5. TDO pin is set in input mode when the Cortex-M3 Core is not in debug mode. Thus the internal pull-up corresponding

to this PIO line must be enabled to avoid current consumption due to floating input.

SAM3S [SUMMARY] 10

6500ES–ATARM–11-Feb-13

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