20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 53
20-668-0011
Manufacturer Part Number
20-668-0011
Description
IC MPU RABIT3000A 55.5MHZ128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 20-668-0011
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
Data Bus Width
8 bit
Maximum Clock Frequency
55.5 MHz
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 55 C
Number Of Programmable I/os
56
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
316-1061
Available stocks
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Part Number:
20-668-0011
Manufacturer:
Rabbit Semiconductor
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5.2 Dependencies
5.2.1 I/O Pins
There are three chip select pins: /CS0, /CS1, and /CS2; two read strobes, /OE0 and /OE1;
and two write strobes, /WE0 and /WE1.
There are eight dedicated data bus pins, D0 through D7.
There are 20 dedicated address pins, A0 through A19.
5.2.2 Clocks
All memory operations are clocked by the processor clock.
5.2.3 Interrupts
When a write is attempted to a write-protected 64 KB or 4 KB block, a write-protection
violation interrupt is generated. The interrupt request is cleared when it is handled. The
write-protection violation interrupt vector is in the IIR at offset 0x090. It is always set to
Priority 3.
When a stack-related write is attempted to a region outside that set by the stack limit regis-
ters, a stack limit violation occurs. The interrupt request is cleared when it is handled. The
stack limit violation interrupt vector is in the IIR at offset 0x1B0. It is always set to Priority 3.
Chapter 5 Memory Management
43
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