20-101-1028 Rabbit Semiconductor, 20-101-1028 Datasheet - Page 88

MODULE RABBITCORE RCM3750

20-101-1028

Manufacturer Part Number
20-101-1028
Description
MODULE RABBITCORE RCM3750
Manufacturer
Rabbit Semiconductor
Datasheet

Specifications of 20-101-1028

Module/board Type
MPU Core Module
Product
Microcontroller Modules
Core Processor
Rabbit 3000
Flash
512 KBytes
Operating Supply Voltage
4.75 to 5.25 V
Board Size
75 mm x 30 mm x 23 mm
For Use With/related Products
RCM3750
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
316-1110
Table A-4 lists the delays in gross memory access time.
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.
82
Table A-4. Data and Clock Delays VIN ±10%, Temp, -40°C–+85°C (maximum)
adr
CSx
IOCSx
IORD
IOWR
BUFEN
3.3 V
VIN
, 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
Data Setup
Time Delay
setup
(ns)
and T
1
hold
Spectrum Spreader Delay
.
no dbl/dbl
Normal
3/4.5
RabbitCore RCM3750
(ns)
no dbl/dbl
Strong
4.5/9

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