mpc8343e Freescale Semiconductor, Inc, mpc8343e Datasheet - Page 16

• Manufacturer Part Number: mpc8343e
• Description: Mpc8343e Powerquicc
• Manufacturer: Freescale Semiconductor, Inc

DDR SDRAM
6.2
This section provides the AC electrical characteristics for the DDR SDRAM interface.
6.2.1
Table 13
6.2.2
Table 14
DDR SDRAM interface.
16
At recommended operating conditions with GV
At recommended operating conditions with GV
AC input low voltage
AC input high voltage
MDQS—MDQ/MECC input skew per byte
Note:
1. Maximum possible skew between a data strobe (MDQS[n]) and any corresponding bit of data (MDQ[8n + {0...7}] if
MCK[n] cycle time, (MCK[n]/MCK[n] crossing)
Skew between any MCK to ADDR/CMD
ADDR/CMD output setup with respect to MCK
ADDR/CMD output hold with respect to MCK
MCS(n) output setup with respect to MCK
0 <= n <= 7) or ECC (MECC[{0...7}] if n = 8).
provides the input AC timing specifications for the DDR SDRAM interface.
and
Table 14. DDR SDRAM Output AC Timing Specifications for Source Synchronous Mode
DDR SDRAM AC Electrical Characteristics
MPC8343E PowerQUICC™ II Pro Integrated Host Processor Hardware Specifications, Rev. 11
DDR SDRAM Input AC Timing Specifications
DDR SDRAM Output AC Timing Specifications
Table 15
Parameter
Parameter
provide the output AC timing specifications and measurement conditions for the
Table 13. DDR SDRAM Input AC Timing Specifications
333 MHz
266 MHz
333 MHz
266 MHz
200 MHz
333 MHz
266 MHz
200 MHz
333 MHz
266 MHz
200 MHz
333 MHz
266 MHz
200 MHz
DD
DD
of 2.5 V ± 5%.
of 2.5 V ± 5%.
Symbol
t
t
t
t
AOSKEW
DDKHAS
DDKHAX
DDKHCS
Symbol
t
t
MCK
DISKEW
V
V
IH
IL
1
MV
–1000
–1100
–1200
3.45
2.65
3.45
Min
2.8
4.6
2.0
3.8
2.8
4.6
REF
6
Min
—
—
+ 0.31
MV
GV
REF
Max
200
300
400
1125
DD
Max
10
—
—
—
750
– 0.31
+ 0.3
Freescale Semiconductor
Unit
Unit
ps
ns
ps
ns
ns
ns
V
V
Notes
Notes
2
4
4
4
1
3