668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 205
668-0003-C
Manufacturer Part Number
668-0003-C
Description
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0003.pdf
(228 pages)
Specifications of 668-0003-C
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 2000 8-Bit
Speed
30MHz
Voltage
2.7V, 3V, 3.3V, 5V
Mounting Type
Surface Mount
Package / Case
100-MQFP, 100-PQFP
Features
-
Other names
316-1004
668-0003
668-0003
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
668-0003-C
Manufacturer:
Rabbit Semiconductor
Quantity:
10 000
- Current page: 205 of 228
- Download datasheet (2Mb)
chronous signal suitable for the PC. Since the target controls the clock for both send and
receive, the data transmission proceeds at a rate controlled by the target board under
development.
This scheme does not allow for an interrupt, and it is not desirable to use up an external
interrupt for this purpose. The serial port may be used, if desired, During program load
because there is no conflict with the user’s program at compile load time. However, the
user’s program will conflict during debugging. The nature of the transmissions during
debugging is such that the user program starts at a break point or otherwise wants to get
the attention of the PC. The other type of message is when the PC wants to read or write
target memory while the target is running.
The target toggling the clock can simply send a clocked serial message to get the attention
of the PC. The intermediate communications board can accept these unsolicited messages
using its clocked serial port. To prevent overrunning the receiver, the target can wait for a
handshake signal on one of the SMODE lines or there can be suitable pre-arranged delays.
If the PC wants attention from the target it can set a line to request attention (SMODE).
The target will detect this line in the periodic interrupt routine and handle the complete
message in the periodic interrupt routine. This may slow down target execution, but the
interrupts will be enabled on the target while the message is read. The intermediate board
could split long messages into a series of shorter messages if this is a problem.
A.4 Suggested Rabbit Crystal Frequencies
Table 15-2 provides a list of suggested Rabbit operating frequencies. The crystal can be
half the operating frequency if the clock doubler is used up to approximately 29.5 MHz.
Beyond this operating clock speed, it is necessary to use an X1 crystal or an external oscil-
lator because asymmetry in the waveform generated by the oscillator becomes a variation
in the clock speed if the clock speed is doubled.
Appendix A.1 The Rabbit Programming Port
199
Related parts for 668-0003-C
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Resistor Network,Thin Film,10KOhms,100WV,.5+/-% Tol,-25,25ppm-TC,3916-Case
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Part Number:
Description:
Resistor Network,Thin Film,10KOhms,100WV,.5+/-% Tol,-25,25ppm-TC,3916-Case
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Part Number:
Description:
SPLASH PROOF SEAL COMMAND SERIES
Manufacturer:
Tyco Electronics
Datasheet:
Part Number:
Description:
RESISTOR, BUS RES N/W 8, 1KOHM 0.5%, SOIC
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Datasheet:
Part Number:
Description:
RESISTOR, BUS N/W, 8RES 10KOHM 0.1%, SOIC
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Datasheet:
Part Number:
Description:
RESISTOR, BUS N/W, 8RES 10KOHM 0.5%, SOIC
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Datasheet:
Part Number:
Description:
RESISTOR, BUS RES N/W 8, 10KOHM, 1%, SOIC
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Datasheet:
Part Number:
Description:
RESISTOR, BUS N/W, 8RES 100KOHM 0.1% SOIC
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Datasheet:
Part Number:
Description:
RESISTOR, BUS N/W, 8RES 5KOHM 0.01%, SOIC
Manufacturer:
BI TECHNOLOGIES/TT ELECTRONICS
Datasheet:
Part Number:
Description:
Resistor Networks & Arrays 2K ohm 0.1% 16 Pin Isolated
Manufacturer:
BI Technologies
Datasheet:
Part Number:
Description:
IC MPU RABIT3000 55.5MHZ 128LQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
IC MPU RABIT3000A 55.5MHZ128LQFP
Manufacturer:
Rabbit Semiconductor
Datasheet:
Part Number:
Description:
Microprocessors - MPU Rabbit 3000 TFBGA 55.5 MHz Clock Speed
Manufacturer:
Rabbit Semiconductor
Part Number:
Description:
Microprocessors - MPU Rabbit 3000 TFBGA Microprocessor
Manufacturer:
Rabbit Semiconductor
Part Number:
Description:
Microprocessors - MPU 30MHz PROCESSOR 100PQFP IQ2T VERS.
Manufacturer:
Rabbit Semiconductor