參數(shù)資料
型號: PXA270
廠商: Intel Corp.
英文描述: Electrical, Mechanical, and Thermal Specification
中文描述: 電氣,機械和熱規(guī)格
文件頁數(shù): 78/126頁
文件大?。?/td> 1563K
代理商: PXA270
6-14
Electrical, Mechanical, and Thermal Specification
Intel PXA270 Processor
AC Timing Specifications
tsdSDIS
MD<31:0> read
data input setup
time from
SDCLK<2:1> rise
TBD
0.5
0.5
ns
tsdSDIH
MD<31:0> read
data input hold
time from
SDCLK<2:1> rise
TBD
1.8
1.8
ns
NOTES:
1. SDCLK for SDRAM slowest period is accomplished by divide-by-2 of the 26-MHz CLK_MEM. The fastest possible SDCLK is
accomplished by configuring CLK_MEM at 104 MHz and not setting MDREFR[KxDB2].
2. SDCLK1 and SDCLK2 frequencies are configured to be CLK_MEM frequency divided by 1 or 2, depending on the bit fields
MDREFR[K1DB2] and MDREFR[K2DB2] settings.
3. These numbers are for VCC_MEM = 1.8 V +20% / –5%, VOL = 0.4 V, and VOH = 1.4 V, with each applicable 4-bit field of the
system memory buffer strength registers (BSCNTRP and BSCNTRN) set to TBD (msb:lsb) and each applicable SDCLK<2:1>
divide-by-2 and divide-by-4 register bits MDREFR[KxDB2] clear.
4. These numbers are for VCC_MEM = 2.5 V +/– 10%, VOL = 0.4 V, and VOH = 2.1 V, with each applicable 4-bit field of the system
memory buffer strength registers (BSCNTRP and BSCNTRN) set to 0b1010 (msb:lsb) and each applicable SDCLK<2:1> divide-
by-2 and divide-by-4 register bit MDREFR[KxDB2] clear.
5. These numbers are for VCC_MEM = 3.3 V +/– 10%, VOL = 0.4 V, and VOH = 2.4 V, with each applicable 4-bit field of the system
memory buffer strength registers (BSCNTRP and BSCNTRN) set to 0b1010 (msb:lsb) and each applicable SDCLK<2:1> divide-
by-2 and divide-by-4 register bit MDREFR[KxDB2] clear.
6. Refer to the “Memory Controller” chapter in the
Intel PXA27x Processor Family Developer’s Manual
for register configuration.
Table 6-15. SDRAM Interface AC Specifications (Sheet 2 of 2)
Symbols
Parameters
VCC_MEM =
1.8V +20% / –5%
3
VCC_MEM =
2.5V +/- 10%
4
VCC_MEM =
3.3V +/- 10%
5
Units
N
MIN
TYP
MAX
MIN
TYP
MAX
MIN
TYP
MAX
相關PDF資料
PDF描述
PXAC37 XA 16-bit microcontroller family 32K/1024 OTP CAN transport layer controller 1 UART, 1 SPI Port, CAN 2.0B, 32 CAN ID Filters, transport layer co-proce
PXB16050U NPN microwave power transistor
PY08-02 INDUSTRIERELAIS FASSUNG PCB
PY08-02186697 SOCKET PCB
PY14 INDUSTRIERELAIS CHASSIS MONTAGESOCKEL
相關代理商/技術(shù)參數(shù)
參數(shù)描述
PXA300 制造商:Marvell 功能描述:
PXA310 制造商:MARVELL 制造商全稱:MARVELL 功能描述:Rich Multimedia with Scalable Performance up to 624 MHz for Cost-Effective and Power-Effi cient Secure 3.5G Smartphones
PXA320 制造商:MARVELL 制造商全稱:MARVELL 功能描述:Cost-Effective, Scalable Performance up to 806 MHz for Power-Efficient, High-End Multimedia Handsets, Embedded Solutions, and Enterprise-Class Devices
PXA6.3VC101MF60TP 功能描述:鋁有機聚合物電容器 100UF 6.3V SMT CAN RoHS:否 制造商:Panasonic Electronic Components 電容:470 uF 容差:20 % 電壓額定值:2.5 V ESR:4.5 mOhms 工作溫度范圍:- 40 C to + 105 C 端接類型:SMD/SMT 外殼直徑: 外殼長度:7.3 mm 外殼寬度:4.3 mm 外殼高度:1.9 mm 封裝:Reel
PXA6.3VC471MH12TP 制造商:United Chemi-Con Inc 功能描述:Cap Aluminum 470uF 6.3V 20% (8 X 12mm) SMD 0.012 Ohm 4770mA 2000 hr 105°C T/R