668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 209
668-0010
Manufacturer Part Number
668-0010
Description
IC MPU RABIT3000 55.5MHZ 128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 668-0010
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 3000 8-Bit
Speed
55.5MHz
Voltage
2.5V, 2.7V, 3V, 3.3V
Mounting Type
Surface Mount
Package / Case
128-LQFP
Features
-
Other names
316-1016
- Current page: 209 of 312
- Download datasheet (2Mb)
24.1 Overview
The Breakpoint/Debug controller allows the RST 28 instruction to be used as a software
breakpoint. Normally the RST 28 instruction causes a call to a particular location in
memory, but the operation of this instruction is modified when the breakpoint/debug
feature is enabled. The RST 28 instruction is treated as a NOP in the breakpoint/debug
mode.
Another breakpoint feature is the ability to disable the RST 28 instruction. The RST 28
vector was often used as a breakpoint feature by adding that instruction to code; by
enabling a bit in BDCR, the RST 28 instruction will execute as a NOP instead, providing
an easy way to disable that type of breakpoint.
24.1.1 Registers
24.2 Dependencies
24.2.1 I/O Pins
There are no I/O pins associated with breakpoints.
24.2.2 Clocks
There are no clocks associated with breakpoints.
24.2.3 Other Registers
There are no other registers associated with breakpoints.
24.2.4 Interrupts
There are no interrupts associated with breakpoints.
Chapter 24 Breakpoints
Breakpoint/Debug Control Register
Register Name
Mnemonic I/O Address R/W
BDCR
24. B
0x001C
REAKPOINTS
W
0xxxxxxx
Rabbit
Reset
3000
00000000
Rabbit
3000A
Reset
199
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