668-0011 Rabbit Semiconductor, 668-0011 Datasheet - Page 150

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668-0011

Manufacturer Part Number
668-0011
Description
IC MPU RABIT3000A 55.5MHZ128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet

Specifications of 668-0011

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
316-1043

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
668-0011
Manufacturer:
Rabbit Semiconductor
Quantity:
10 000
Several types of data encoding are available in HDLC mode: NRZ, NRZI, biphase-level
(Manchester), biphase-space (FM0), and biphase-mark (FM1). IrDA-compliant RZI
encoding is also available in the HDLC mode; it reduces the bit widths to one quarter the
normal width, which allows the serial-port signal to be connected directly to an IrDA
transceiver.
If an internal clock is selected, the serial port data clocks can be generated from the appro-
priate 8-bit timer (Timer A2 for Serial Port E and Timer A3 for Serial Port F). In the
HDLC mode, the bit data rate is equal to the data clock rate divided by 16.
When using an external clock, a 1× (same speed as the data rate) clock is supported. In this
case, the maximum data rate is 1/6 of the peripheral clock rate. The receive clock is gener-
ated from the transitions in the data stream via a digital phase-locked loop (DPLL). The
timing of this synchronization is adjusted with each incoming transition, allowing for
tracking if the two external clocks differ slightly in frequency. For more on the clock syn-
chronization and data encoding, see Section 18.3.3.
18.1.1 Block Diagram
140
Rabbit 3000 Microprocessor User’s Manual

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