Mechanical Specifications; Mechanical Drawing; Mounting Holes - Applied Data Systems Bitsy User Manual

Bitsy User's Manual
The Bitsy supply outputs 5V, +3.3V, 30V (LCD VEE), and 1.75V (CPU Core). It is possible to
regulate these voltages externally, and supply them through connector pins. See section 4.3 for
more information.

4.2 Mechanical Specifications

The Bitsy is 3 by 5 inches in size. This section describes the component dimensions and mounting
of the board. Detailed drawings are available from ADS in PDF format for customers who are
going into production.

4.2.1 Mechanical Drawing

The following mechanical drawing of the Bitsy specifies the dimensions of the Bitsy, as well as
locations of key components on the board. The origin for measurements is the center of the
mounting hole on the lower right corner of the board.
PCMCIA ejectors are available. These are the same height as the rest of the PCMCIA socket and
extend beyond the forward edge of the board. The footprint is shown as crosshatching in the
drawing.

4.2.2 Mounting Holes

Four holes are provided, one on each corner, for mounting; the diameter of the holes is 0.138-in.
Mounting holes are plated through and connected to the Bitsy ground plane.
For reliable ground connections, use locking washers (star or split) when securing a Bitsy in an
enclosure. Make sure that washers do not extend beyond the limits of the pads provided.
Page 16 ADS document # 110111-1003A