NHPXA270CXXX INTEL [Intel Corporation], NHPXA270CXXX Datasheet - Page 77

• Manufacturer Part Number: NHPXA270CXXX
• Description: Electrical, Mechanical, and Thermal Specification
• Manufacturer: INTEL [Intel Corporation]

Symbols
tsdCLK
tsdCMD
tsdCAS
tsdRCD
tsdRP
tsdCL
tsdRAS
tsdRC
tsdWR
tsdSDOS
tsdSDOH
Electrical, Mechanical, and Thermal Specification
Table 6-15. SDRAM Interface AC Specifications (Sheet 1 of 2)
Parameters
SDCLK1, SDCLK2
period
nSDCAS,
nSDRAS, nWE,
nSDCS assert time
nSDCAS to
nSDCAS assert
time
nSDRAS to
nSDCAS assert
time
nSDRAS Pre
charge
nSDRAS to
nSDCAS delay
nSDRAS active
time
nSDRAS cycle
time
write recovery time
(time from last data
in the
PRECHARGE)
MA<24:10>,
MD<31:0>,
DQM<3:0>,
nSDCS<3:0>,
nSDRAS,
nSDCAS, nWE,
nOE, SDCKE1,
RDnWR output
setup time to
SDCLK<2:1> rise
MA<24:10>,
MD<31:0>,
DQM<3:0>,
nSDCS<3:0>,
nSDRAS,
nSDCAS, nWE,
nOE, SDCKE1,
RDnWR output
hold time from
SDCLK<2:1> rise
VCC_CORE = 0.85 V +/–
TBD
TBD
MIN
9.6
VCC_MEM <= 3.63 V
1
2
1
2
2
3
4
2
10%, with 1.71 V<=
1.8V +20% / –5%
VCC_MEM =
MDCNFG
MDCNFG
MDCNFG
MDCNFG
MDCNFG
[DTCx]
[DTCx]
[DTCx]
[DTCx]
[DTCx]
TYP
—
—
—
—
—
—
MAX
76.9
3
—
11
—
—
1
3
3
3
7
2
TBD
TBD
MIN
VCC_CORE = 1.1 V +/–
9.6
1
2
1
2
2
3
4
2
VCC_MEM <= 3.63 V
10%, with 1.71 V <=
2.5V +/- 10%
VCC_MEM =
MDCNFG
MDCNFG
MDCNFG
MDCNFG
MDCNFG
[DTCx]
[DTCx]
[DTCx]
[DTCx]
[DTCx]
TYP
—
—
—
—
—
—
4
MAX
76.9
—
11
1
3
3
3
7
2
TBD
TBD
MIN
9.6
VCC_CORE = 1.3 V +/–
1
2
1
2
2
3
4
2
VCC_MEM <= 3.63 V
10%, with 1.71 V <=
AC Timing Specifications
Intel® PXA270 Processor
3.3V +/- 10%
VCC_MEM =
MDCNFG
MDCNFG
MDCNFG
MDCNFG
MDCNFG
[DTCx]
[DTCx]
[DTCx]
[DTCx]
[DTCx]
TYP
—
—
—
—
—
—
5
MAX
76.9
—
11
—
—
1
3
3
3
7
2
SDCLK —
SDCLK —
SDCLK
SDCLK
SDCLK
SDCLK
SDCLK
SDCLK —
Units
ns
ns
ns
6-13
—
—
1,
2
6
6
6
6
6