668-0011 Rabbit Semiconductor, 668-0011 Datasheet - Page 135

• 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

17.2 Dependencies
17.2.1 I/O Pins
Serial Port A can transmit on parallel port pins PC6 or PD6, and can receive on pins PC7
or PD7. If the clocked serial mode is enabled, the serial clock is either transmitted or
received on PB1. When an internal clock is selected in the clocked serial mode, PB1 is
automatically enabled as a clock output.
Serial Port B can transmit on parallel port pins PC4 or PD4, and can receive on pins PC5
or PD5. If the clocked serial mode is enabled, the serial clock is either transmitted or
received on PB0. When an internal clock is selected in the clocked serial mode, PB0 is
automatically enabled as a clock output.
Serial Port C can transmit on parallel port pin PC2, and can receive on pin PC3. If the
clocked serial mode is enabled, the serial clock will be on PF1.
Serial Port D can transmit on parallel port pin PC0, and can receive on pin PC1. If the
clocked serial mode is enabled, the serial clock will be transmitted on PF0.
17.2.2 Clocks
The data clocks for Serial Ports A – D are based on the corresponding Timer A output and
can be divided by a Timer A divider. The overall clock divider will be the value in the
appropriate register plus one.
17.2.3 Other Registers
Chapter 17 Serial Ports A – D
Transmit Clock
Receive Clock
Function
Transmit
Receive
TAT4R
TAT5R
TAT6R
TAT7R
PCFR, PDFR
Serial Port A
Register
PC6, PD6
PC7, PD7
PB1
PB1
Table 17-2. Pin Usage Serial Ports A – D
Time constant for Serial Port A
Time constant for Serial Port B
Time constant for Serial Port C
Time constant for Serial Port D
Alternate port output selection
Serial Port B
PC4, PD4
PC5, PD5
PB0
PB0
Function
Serial Port C
PC2
PC3
PF1
PF1
Serial Port D
PC0
PC1
PF0
PF0
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