User's Manual

MC55/56 Hardware Interface Description
Confidential / Preliminary
s
MC55/56_hd_v03.00 Page 96 of 104 16.08.2005
6.3 Board-to-board connector
This chapter provides specifications for the 50-pin board-to-board connector which serves as
physical interface to the host application. The receptacle assembled on the MC55/56 PCB is
type Hirose DF12C. Mating headers from Hirose are available in different stacking heights.
Figure 41: Hirose DF12C receptacle on MC55/56 Figure 42: Header Hirose DF12 series
Table 35: Ordering information DF12 series
Item Part number Stacking
height (mm)
HRS number
Receptacle on MC55/56 DF12C(3.0)-50DS-0.5V(81) 3 - 5 537-0694-9-81
Headers DF12 series DF12E(3.0)-50DP-0.5V(81)
DF12E(3.5)-50DP-0.5V(81)
DF12E(4.0)-50DP-0.5V(81)
DF12E(5.0)-50DP-0.5V(81)
3.0
3.5
4.0
5.0
537-0834-6-**
537-0534-2-**
537-0559-3-**
537-0584-0-**
Notes: The headers listed above are without boss and metal fitting. Please contact Hirose for details
on other types of mating headers. Asterixed HRS numbers denote different types of packaging.
Table 36: Electrical and mechanical characteristics of the Hirose DF12C connector
Parameter Specification (50 pin board-to-board connector)
Number of contacts 50
Quantity delivered 2000 connectors per tape & reel
Voltage 50V
Rated current 0.3A max per contact
Resistance 0.05 Ohm per contact
Dielectric withstanding voltage 500V RMS min
Operating temperature -45°C...+125°C
Contact material phosphor bronze (surface: gold plated)
Insulator material PA , beige natural
Stacking height 3.0 mm ; 3.5 mm ; 4.0 mm ; 5.0 mm
Insertion force 21.8N
Withdrawal force 1
st
10N
Withdrawal force 50
th
10N
Maximum connection cycles 50