NHPXA270C5C520 Intel, NHPXA270C5C520 Datasheet - Page 65

• Manufacturer Part Number: NHPXA270C5C520
• Description: IC MPU 32BIT 520MHZ 356-PBGA
• Manufacturer: Intel

Specifications of NHPXA270C5C520

• Processor Type: XScale®
• Speed: 520MHz
• Voltage: 1.45V
• Mounting Type: Surface Mount
• Package / Case: 356-PBGA
• For Use With: 460-3472 - KIT DEV ZOOM STARTER FOR PXA270
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 868459

AC Timing Specifications
6.1
Electrical, Mechanical, and Thermal Specification
Table 6-1. Standard Input, Output, and I/O-Pin AC Operating Conditions
Note: The timing diagrams in this chapter show bursts that start at 0 and proceed to 3 or 7. However, the
A pin’s alternating-current (AC) characteristics include input and output capacitance. These factors
determine the loading for external drivers and other load analyses. The AC characteristics also
include a derating factor, which indicates how much the AC timings might vary with different
loads.
least significant address (0) is not always received first during a burst transfer, because the Intel®
PXA270 processor requests the critical word first during burst accesses.
Table 6-1
pins. All AC specification values are valid for the device’s entire temperature range.
AC Test Load Specifications
Figure 6-1
the part. It is not intended to be either a precise representation of the typical system environment
nor a depiction of the actual load presented by a production tester. System designers use IBIS or
other simulation tools to correlate the timing reference load to system environment. Manufacturers
correlate to their production test conditions (generally a coaxial transmission line terminated at the
tester electronics).
Symbol
C
C
td
td
C
td
td
IN
OUT_H
OUT_L
F_H
R_H
F_L
R_L
shows the AC operating conditions for the high- and low-strength input, output, and I/O
represents the timing reference load used in defining the relevant timing parameters of
Description
Input capacitance, all standard input and
I/O pins
Output capacitance, all standard high-
strength output and I/O pins
Output derating, falling edge on all
standard, high-strength output and I/O
pins, from 50-pf load.
Output derating, rising edge on all
standard, high-strength output and I/O
pins, from 50-pf load.
Output capacitance, all standard low-
strength output and I/O pins
Output derating, falling edge on all
standard, low-strength output and I/O
pins, from 50-pf load.
Output derating, rising edge on all
standard, low-strength output and I/O
pins, from 50-pf load.
Min
—
20
—
—
20
—
—
Typical
TBD
TBD
TBD
TBD
—
—
—
Max
10
50
50
—
—
—
—
Units
ns/pf
ns/pf
ns/pf
ns/pf
pf
pf
pf
6-1
6