參數(shù)資料
型號(hào)： PXA210
廠商： Intel Corp.
英文描述： Intel-R PXA250 and PXA210 Applications Processors
中文描述： 英特爾- R的PXA250和PXA210應(yīng)用處理器
文件頁(yè)數(shù)： 32/46頁(yè)
文件大小： 431K
代理商： PXA210
PXA250 and PXA210
—
Electrical, Mechanical, and Thermal Specification
32
Datasheet
4.4
Targeted AC Specifications
All the non-analog input, output, and I/O pins on the applications processor can be divided into one
of two categories:
1. High Strength Input, Output, and I/O pins:
nCS[5:1] (GP 33, 80, 79, 78, 15 respectively), nCS[0]
MD[31:0], MA[25:0]
DQM[3:0]
nOE, nWE, nSDRAS, nSDCAS, nSDCS[3:0]
SDCLK[2:0], SDCKE[1:0]
RDnWR, RDY (GP[18])
nPWE, nPOE pins (GP[49:48])
MMCLK (GP[53]), MMCMD, MMDAT
TDO
nACRESET
2. Low Strength Input, Output, and I/O pins - all remaining non-supply pins
A pin
’
s AC Characteristics include input and output capacitance. These determine loading for
external drivers or other load analysis. The AC Characteristics also include a de-rating factor,
which indicates how much faster or slower the AC timings get with different loads. The AC
Operating Conditions for the high- and low-strength input, output, and I/O pins are shown in
Table 10,
“
Standard Input, Output, and I/O Pin AC Operating Conditions
”
. All AC specification
values are valid for entire temperature range of the device.
Table 10. Standard Input, Output, and I/O Pin AC Operating Conditions
Symbol
Description
Min
Typical
Max
Units
CIN
Input Capacitance, all standard input and
IO pins
10
pF
COUT_H
Output Capacitance, all standard high-
strength output and IO pins
251
501
pF
tdF_H
Output de-rating, falling edge on all
standard, high-strength output and I/O
pins, from 50pF load.
ns/pF
tdR_H
Output de-rating, rising edge on all
standard, high-strength output and I/O
pins, from 50pF load.
ns/pF
NOTE:
AC Specifications guaranteed for loads in this range. All testing is done at 50pF
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