Filter
Top Products
SA-1110 Developer’s Manual 397
AC Parameters 13
This chapter defines the AC parameters for the Intel
®
StrongARM
*
SA-1110 Microprocessor
(SA-1110).
13.1 Test Conditions
The AC timing diagrams presented in this chapter assume that the outputs of SA-1110 have been
loaded with a 50-pF capacitive load on output signals. The output pads of SA-1110 are CMOS
drivers that exhibit a propagation delay that increases with the increase in load capacitance.
Table 13-1 lists the output derating figure for the output pad, showing the approximate rate of
increase of delay with increasing or decreasing load capacitance for a typical process at room
temperature. For derating figures for 1.55-V devices, contact the Intel Massachusetts Customer
Technology Center.
Note: Table 13-1 defines all derating parameters established for the following pins: SDCKE[1:0],
SDCLK[2:0], nCS[3:0], nRAS/nSDCS[3:0], nSDRAS, nSDCAS, nWE, nOE, nCAS/DQM[3:0],
A[25:10], D[31:0]. Table 13-2 defines the derating parameters established for all other pins.
NOTE:
1. Parameter verified by design
NOTE:
1. Parameter verified by design
Table 13-1. SA-1110 Output Derating — Fast Output Buffer
Output Signal
Load for
Nominal
Value
Output
Derating
(ns/pF)
VDD = 1.55 V
rising edge
Output
Derating
(ns/pF)
VDD = 1.55 V
falling edge
Output
Derating
(ns/pF)
VDD = 1.75 V
rising edge
Output
Derating
(ns/pF)
VDD = 1.75 V
falling edge
Note
All outputs 50 pF 0.021 0.055 0.019 0.056 1
Table 13-2. SA-1110 Output Derating — Slow Output Buffer
OutputSignal
Load for
Nominal
Value
Output
Derating
(ns/pF)
VDD = 1.55 V
rising edge
Output
Derating
(ns/pF)
VDD = 1.55 V
falling edge
Output
Derating
(ns/pF)
VDD = 1.75 V
rising edge
Output
Derating
(ns/pF)
VDD = 1.75 V
falling edge
Note
All outputs 50 pF 0.085 0.077 0.083 0.075 1