Designing Expansion Boards for the Motorola MPC555EVB/ETAS ES2000

MOTOROLA

Rev. 1, 31 July 2001

3

2.3 HCE Board Dimensions

Figure 1 and Table 2 show the maximum board dimensions for boards designed to interface to the HCE

connectors. Surface mount components should be used to keep the total height of the HCE board and

connectors to 0.6875 inches (17.46 mm) to avoid interference with the optional ETAS ETK interface.

Figure 1

HCE Board Layout

3 The Customized Communication Expansion Connectors (CCE)

The customized communication expansion connectors on the EVB555 allows access to the MPC555

on-chip communication ports. The EVB555 provides for RS-232 drivers and DB9 connector for the SCI1

channel of the MPC555. The CCE allows for customized connections to all of the MPC555 QSMCM and

TouCAN interfaces. There are two 20-pin connectors (CO104 – A and CO105 – B) part number Samtec

TFM-110-12-S-D-P. The matching connector required on the expansion board is SFM-110-02-S-D-P.

The pin-out of the CCE is shown in Table 3.

NOTE

The TXD1 and RXD1 are, by default, connected to the on board RS-232 driver.

These can optionally be brought to the TXD_CCE (7) and RXD_CCE (8) pins of

connector CO105 by changing the position of the 0

Ω resistors on BR100 and

BR101 from position 1-2 to position 2-3.

Table 2 HCE Board Dimensions

Dimension

Millimeters

Inches

L

45.72

1.800

S6.35

0.250

T

44.45

1.75

Host

Communication

Expansion

L

S

T

S

Freescale Semiconductor, Inc.

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