668-0011 Rabbit Semiconductor, 668-0011 Datasheet - Page 86

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

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

10.4 Register Descriptions
76
Bit(s)
Bit(s)
7:0
7
6
5
4
3
2
1
0
Parallel Port C Function Register
Parallel Port C Data Register
Value
Value
Write
Read
x
0
1
x
0
1
x
0
1
x
0
1
The current state of Parallel Port C pins PC7–PC0 is reported.
The Parallel Port C buffer is written with this value for transfer to the Parallel
Port C output register on the next rising edge of the peripheral clock.
Parallel Port C pin 7 is always a parallel port input.
Parallel Port C pin 6 is a parallel port output.
Parallel Port C pin 6 drives TxA.
Parallel Port C pin 5 is always a parallel port input.
Parallel Port C pin 4 is a parallel port output.
Parallel Port C pin 4 drives TxB.
Parallel Port C pin 3 is always a parallel port input.
Parallel Port C pin 2 is a parallel port output.
Parallel Port C pin 2 drives TxC.
Parallel Port C pin 1 is always a parallel port input.
Parallel Port C pin 0 is a parallel port output.
Parallel Port C pin 0 drives TxD.
(PCDR)
(PCFR)
Description
Description
Rabbit 3000 Microprocessor User’s Manual
(Address = 0x0050)
(Address = 0x0055)