20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 110

• Manufacturer Part Number: 20-668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

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

100
Bit(s)
* Introduced with Rabbit 3000A chip
7:6
3:2
1:0
5
4
Quad Decode Control Register
Value
00
01
10
11
1
00
01
10
11
00
01
10
11
0
*
Disable Quadrature Decoder 2 inputs. Writing a new value to these bits will not
cause Quadrature Decoder 2 to increment or decrement.
This bit combination is reserved and should not be used.
Quadrature Decoder 2 inputs from Port F bits 3 and 2.
Quadrature Decoder 2 inputs from Port F bits 7 and 6.
Eight-bit Quadrature Decoder counters (both channels).
Ten-bit Quadrature Decoder counters (both channels).
This bit is reserved and should be written as zero.
Disable Quadrature Decoder 1 inputs. Writing a new value to these bits will not
cause Quadrature Decoder 1 to increment or decrement.
This bit combination is reserved and should not be used.
Quadrature Decoder 1 inputs from Port F bits 1 and 0.
Quadrature Decoder 1 inputs from Port F bits 5 and 4.
Quadrature Decoder interrupts are disabled.
Quadrature Decoder interrupt use Interrupt Priority 1.
Quadrature Decoder interrupt use Interrupt Priority 2.
Quadrature Decoder interrupt use Interrupt Priority 3.
(QDCR)
Description
Rabbit 3000 Microprocessor User’s Manual
(Address = 0x0091)