6

ATSAM2133B

2694A–DRMSD–05/03

MIDI IN

100

IN

MIDI IN input

MIDI OUT

99

OUT

MIDI OUT output

WA0 - 22

24 - 29,

32 - 35,

38 - 43, 46 - 52

OUT

External memory address (ROM/Flash). Up to 16 MB.

WD0 - 15

58 - 67, 70 - 75

I/O

External ROM/FLASH data

WCS

53

OUT

External ROM/FLASH chip select, active low.

WWE

55

OUT

External FLASH write enable, active low.

WOE

54

OUT

External ROM/FLASH output enable, active low.

LFT

85

ANA

PLL low-pass filter, should be connected to an external RC network.

TEST

23

IN

Test pin, should be returned to GND.

PDWN

79

IN

Power down, active low, all outputs except WCS, WWE, WOE are set to logic 0, the PLL

and crystal oscillator are stopped. If the power switch feature is used, then 2.5V supply

voltage is removed from the core. To exit from power down, PDWN must be set to V

RESET applied. When unused, this pin must be connected to V

Table 1. Pin by Function - 100-lead TQFP Package (Continued)

Pin Name

Pin Number

Type

Function