mpc5645s Freescale Semiconductor, Inc, mpc5645s Datasheet - Page 112

• Manufacturer Part Number: mpc5645s
• Description: Mpc5645s Microcontroller Data Sheet
• Manufacturer: Freescale Semiconductor, Inc

Electrical characteristics
4.18.5
DDR Interface specification from ‘MCD - 32 Bit Automotive MCU - CMOS090LP2’ I/O Pad
Specification Revision 1.5 - May14th 2008.
This device supports SDR, DDR1, DDR2 half and full strengths, as well as LPDDR half and full speeds.
Table 55
112
1
2
3
1
2
3
Output Rise/Fall
Output Rise/Fall
shows the SRE settings for the different modes.
Parameter
Parameter
Input threshold
Input threshold
V
C
Voltage (V
V
C
Voltage (V
Crossover
Crossover
REF
Z
REF
Z
DRAM Interface
voltage
voltage
at -40, 140, 25
at -40, 140, 25
time
time
= (V
= (V
1 2 3
1 2 3
DDE_DR
DDE_DR
DDE_DR
DDE_DR
)/2.
)/2.
) variation is 3.0 V - 3.6 V.
) variation is 1.7 V - 1.9 V.
C
C
C
C
C
C
C
C
o
o
Table 57. AC Specs for DDR2 mode (V
C.
C.
Table 56. AC Specs for SDR mode (V
MPC5645S Microcontroller Data Sheet, Rev. 6
Min
Min
ipp_sre[2:0]
Table 55. Pad mode configurations
000
001
010
011
100
101
110
111
Values
Typ
Values
Typ
1.8V DDR2 Half Strength
1.8V LPDDR Half Speed
1.8V DDR2 Full Strength
1.8V LPDDR Full Speed
Not supported
Not supported
2.5V DDR1
Mode
SDR
DDE_DR
DDE_DR
Max
Max
= 3.3 V)
= 1.8 V)
Freescale Semiconductor
Unit
Unit