668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 71
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: 71 of 312
- Download datasheet (2Mb)
7. E
I
XTERNAL
NTERRUPTS
7.1 Overview
The Rabbit 3000 has two external interrupts. Each interrupt has two input pins that can be
used to trigger the interrupt. The inputs have a pulse catcher that can detect rising, falling,
or both edges. The pulse needs to be present for a least three peripheral clocks to be
detected.
The signal on the external interrupt pin must be present for at least three peripheral clock
cycles to be detected. In addition, the Rabbit 3000 has a minimum latency of 10 clocks to
respond to an interrupt, so the minimum external interrupt response time is three periph-
eral clock cycles plus 10 processor clock cycles.
7.2 Block Diagram
Chapter 7 External Interrupts
61
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