20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 295

• Manufacturer Part Number: 20-668-0024
• Description: IC CPU RABBIT4000 128-LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0024

• Processor Type: Rabbit 4000 8-bit
• Speed: 60MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 20-668-0022; 316-1078

27.2 Dependencies
27.2.1 I/O Pins
There are no pin dependencies for the System/User Mode.
27.2.2 Clocks
There are no clock dependencies for the System/User Mode.
27.2.3 Other Registers
Any writes to the internal I/O registers listed in Table 27-2 are ignored when the System/
User Mode is enabled and the processor is in the User Mode.
Chapter 27 System/User Mode
Global Control/Status Register
Watchdog Timer Control Register
Watchdog Timer Test Register
Global Clock Modulator 0 Register
Global Clock Modulator 1 Register
Secondary Watchdog Timer Register
Global Power Save Control Register
Global Output Control Register
Global Clock Double Register
MMU Instruction/Data Register
Stack Segment Register
Data Segment Register
Segment Size Register
Memory Bank 0 Control Register
Memory Bank 1 Control Register
Memory Bank 2 Control Register
Memory Bank 3 Control Register
MMU Expanded Code Register
Memory Timing Control Register
Stack Segment Low Register
Stack Segment High Register
Breakpoint/Debug Control Register
Memory Alternate Control Register
Data Segment Low Register
Table 27-2. I/O Addresses Inaccessible in User Mode
Register Name
STACKSEG
Mnemonic
DATASEG
STKSEGH
STKSEGL
DATSEGL
SEGSIZE
WDTCR
WDTTR
SWDTR
MMIDR
GCM0R
GCM1R
MB0CR
MB1CR
MB2CR
MB3CR
GPSCR
MACR
GCDR
MECR
MTCR
GOCR
BDCR
GCSR
I/O Address
0x000A
0x000B
0x000C
0x000D
0x001A
0x001B
0x001C
0x001D
0x000E
0x000F
0x001E
0x0000
0x0008
0x0009
0x0010
0x0011
0x0012
0x0013
0x0014
0x0015
0x0016
0x0017
0x0018
0x0019
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