668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 153
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: 153 of 228
- Download datasheet (2Mb)
As a simple example, suppose that the slave is to be used as a four-port UART. It has the
capability to send or receive characters on any of its four serial ports. Leaving aside the
question of setup for parameters, such as the baud rate, we could define a protocol as fol-
lows.
The slave can interrupt the master at any time by storing to SPD0R. It will do this every
time an enabled transmitter is ready to accept a character or every time an enabled receiver
receives a character. When it stores to SPD0R, it will store a code indicating the reason for
the interrupt, that is, receive or transmit and channel number. If the cause is receive, the
received character will also be placed in SPD1R writable by the slave. When the master is
interrupted for any reason, the master will sneak a peek at SPD0R by reading SPSR. If the
interrupt is caused by a receive character, it will remove the character from SPD1R and
read SPD0R to handshake with the slave.
If the master is interrupted for transmitter ready, as determined by the sneak peek, it will
place the outgoing character in SPD1R and write a code to SPD0R indicating transmit and
channel number. This will cause the slave to be interrupted, and the slave will take the
character and handshake by reading SPD0R. This handshake does not interrupt the master.
Chapter 13 Rabbit Slave Port
SPD0R readable by master is a status register with bits indicating which of the four
receivers and four transmitters is ready, that is, has a character received or is ready to
send a character.
SPD0R writable by the master is a control register used to send commands to the slave.
SPD1R is used to send or receive data characters or control bytes.
The line /SLAVEATTN is wired to the external interrupt request of the master so that
the master is interrupted when the slave writes to SPD0R. Typically the slave will
write to SPD0R when there is a change of status on one of the serial ports.
147
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