668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 211

• Manufacturer Part Number: 668-0003-C
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

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

B.2.2 Revision-Level ID Register
Two read-only registers are provided to allow software to identify the Rabbit microproces-
sor and recognize the features and capabilities of the chip. Five bits in each of these regis-
ters are unique to each version of the chip. One register identifies the CPU (GCPU), and
the other register is reserved for revision identification (GREV). The CPU identification
(GCPU) of all revisions of the Rabbit 2000 microprocessor is the same. Rabbit 2000 revi-
sions are differentiated by the value in the GREV register.
Table B-3 summarizes the processor identification information for the different Rabbit
2000 versions.
Details of the CPU ID registers are listed in Table B-4 and Table B-5.
Appendix B Rabbit 2000 Revisions
7
(read only) 1
6:5
4:0
Bit(s)
0
read
00001
Global CPU Register
Table B-3. Rabbit 2000 Revision Identification Information
Value
Rabbit 2000
Rabbit 2000A
Rabbit 2000B
Rabbit 2000C
Processor Revision
Program fetch as a function of the SMODE pins.
Ignore the SMODE pins program fetch function.
These bits report the state of the SMODE pins.
CPU identifier for the Rabbit 2000 microprocessor
Table B-4. Global CPU Register
Identifier
Package
IQ2T
IQ3T
IQ4T
IQ5T
(GCPU)
Description
GCPU
00000
00000
00000
00000
[4:0]
GREV
00000
00001
00010
00011
[4:0]
(Address = 0x2E)
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