668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 276

• Manufacturer Part Number: 668-0010
• Description: IC MPU RABIT3000 55.5MHZ 128LQFP
• Manufacturer: Rabbit Semiconductor

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

2. First revision (Rabbit 3000A)—Available in two packages and identified by IL2T for
266
the LQFP package and IZ2T for the TFBGA package. This version began shipping in
August 2003. All the bugs in the original Rabbit 3000 were fixed. The Rabbit 3000A
contains a number of new features and improvements.
(d) IrDA bug—This bug is documented in Rabbit’s Technical Note TN236, Rabbit
(a) A new mode of operation known as System/User mode was added. This mode
(b) The ability to write-protect 64 KB physical memory blocks was added, with
(c) Stack protection was added. Writing outside set stack boundaries triggers a
(d) RAM segment relocation was added. This feature allows a 1, 2, or 4 KB
(e) Secondary watchdog timer added. The secondary watchdog timer was added to
(f) Two new opcodes were added to support multiply-and-add and multiply-and-
(g) Six new opcodes were added to support block-copy operations from I/O
(h) The I/O address space has been expanded to 16 bits to make room for new
(i) Two new features were added to further expand the external I/O interface
3000 IrDA Bug. When configured to operate in the IrDA mode, the serial port
may at times generate an extra pulse before the start bit is transmitted. This
pulse may appear either before a multi-character transmission or before a sin-
gle-character transmission. If the beginning of the start bit coincides with when
the IrDA pulse generator output is high, there will be a spurious 1/16th-bit cell
pulse on the transmit output.
provides a framework for separating application code from system-critical
code, which helps prevent application code from crashing the entire device.
System/User mode is described in detail in Chapter 26.
the option of further protecting two of the 64 KB blocks in 4 KB segments.
Attempts to write to a protected block triggers a Priority 3 write-protection
interrupt.
Priority 3 stack violation interrupt.
segment of the logical memory space to be mapped as data (or for program
execution) when separate I/D space is enabled.
function as a safety net for the periodic interrupt.
subtract operations on large unsigned integers. These operations can be used to
speed up public-key calculations.
addresses to memory addresses and vice-versa.
peripherals.
capabilities of the processor. First, an option was added to enable or disable the
external I/O bus interface for a given I/O bank. If the external I/O bus is disabled
for a given external I/O bank, the processor uses the memory bus for external
I/O transactions. The second feature is the addition of an option for enabling
hold time for external I/O read operations. The option shortens the read strobes
by one clock cycle.
Rabbit 3000 Microprocessor User’s Manual