mpc8641 Freescale Semiconductor, Inc, mpc8641 Datasheet - Page 10

• Manufacturer Part Number: mpc8641
• Description: Integrated Host Processor Hardware Specifications
• Manufacturer: Freescale Semiconductor, Inc

Electrical Characteristics
Figure 2
The MPC8641 core voltage must always be provided at nominal V
recommended core voltage). Voltage to the processor interface I/Os are provided through separate sets of
supply pins and must be provided at the voltages shown in
respect to the associated I/O supply voltage. OV
circuits and satisfy appropriate LVCMOS type specifications. The DDR SDRAM interface uses a
single-ended differential receiver referenced to each externally supplied Dn_MV
to Dn_GV
10
shows the undershoot and overshoot voltages at the interfaces of the MPC8641.
DD
/2) as is appropriate for the (SSTL-18 and SSTL-25) electrical signaling standards.
V
MPC8641 and MPC8641D Integrated Host Processor Hardware Specifications, Rev. 2
IH
L/T/D n _G/O/X/SV
L/T/D n _G/O/X/SV
Figure 2. Overshoot/Undershoot Voltage for D n
V
Note:
1. t
DDR n = 10% of D n _MCK period
eTSEC n = 10% of EC n _GTX_CLK125 period
Local Bus = 10% of LCLK[0:2] period
I
JTAG = 10% of SYSCLK
IL
2
L/T/D n _G/O/X/SV
C = 10% of SYSCLK
CLK
references clocks for various functional blocks as follows:
GND – 0.3 V
GND – 0.7 V
DD
DD
+ 20%
+ 5%
GND
DD
DD
and L/TV
Table
Not to Exceed 10%
DD
2. The input voltage threshold scales with
based receivers are simple CMOS I/O
of t
DD
CLK
_
_Coren (See
M/O/L/TV
1
REF
IN
Table 2
signal (nominally set
Freescale Semiconductor
for actual