20-101-1217 Rabbit Semiconductor, 20-101-1217 Datasheet - Page 71

• Manufacturer Part Number: 20-101-1217
• Description: MODULE RABBITCORE RCM3229
• Manufacturer: Rabbit Semiconductor

Specifications of 20-101-1217

• Module/board Type: MPU Core Module
• For Use With/related Products: RCM3229
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 316-1146

Table A-4 lists the delays in gross memory access time for V
The measurements are taken at the 50% points under the following conditions.
• T = -40°C to 85°C, V = V
• Internal clock to nonloaded CLK pin delay ≤ 1 ns @ 85°C/3.0 V
The clock to address output delays are similar, and apply to the following delays.
• T
• T
• T
• T
• T
• T
The data setup time delays are similar for both T
When the spectrum spreader is enabled with the clock doubler, every other clock cycle is
shortened (sometimes lengthened) by a maximum amount given in the table above. The
shortening takes place by shortening the high part of the clock. If the doubler is not
enabled, then every clock is shortened during the low part of the clock period. The maxi-
mum shortening for a pair of clocks combined is shown in the table.
Technical Note TN227, Interfacing External I/O with Rabbit 2000/3000 Designs, con-
tains suggestions for interfacing I/O devices to the Rabbit 3000 microprocessors.
User’s Manual
Table A-4. Data and Clock Delays V
adr
CSx
IOCSx
IORD
IOWR
BUFEN
VDD
3.3
, the clock to address delay
, the clock to memory chip select delay
, the clock to I/O read strobe delay
, the clock to I/O write strobe delay
, the clock to I/O chip select delay
, the clock to I/O buffer enable delay
Clock to Address Output Delay
30 pF
6
60 pF
(ns)
DD
8
±10%
90 pF
11
DD
±10%, Temp, -40°C–+85°C (maximum)
Time Delay
setup
Data Setup
(ns)
and T
1
hold
DD
Spectrum Spreader Delay
.
dbl/no dbl
= 3.3 V.
Normal
3/4.5
(ns)
dbl/no dbl
Strong
4.5/9
65