668-0010 Rabbit Semiconductor, 668-0010 Datasheet - Page 111

• Manufacturer Part Number: 668-0010
• Description: IC MPU RABIT3000 55.5MHZ 128LQFP
• Manufacturer: Rabbit Semiconductor

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

14.1 Overview
Parallel Port G is a byte-wide port with each bit programmable for data direction. These
are simple inputs and outputs controlled and reported in the Port G Data Register (PGDR).
When used as outputs, the Parallel Port G bits are buffered, with the data written to PGDR
transferred to the output pins on a selected timing edge. Either the peripheral clock or the
outputs of Timer A1, Timer B1, or Timer B2 can be used for this function, with each nibble
of the port having a separate select field to control this timing. Each bit can either be pro-
grammed as open-drain or driven high and low.
These inputs and outputs are also used for PWM outputs and for access to the data and
clock I/O of SDLC/HDLC Serial Ports E and F.
Chapter 14 Parallel Port G
Pin Name
* Introduced with Rabbit 3000A chip.
PG7
PG6
PG5
PG4
PG3
PG2
PG1
PG0
Serial Ports E–F
Table 14-1. Parallel Port G Alternate Pin Functions
ARCLKE
ARCLKF
RCLKE
TCLKE
RCLKF
TCLKF
ARXE
ARXF
RXE
RXF
—
—
*
*
*
*
Inputs
Input Capture
14. P
—
—
—
—
×
×
×
×
ARALLEL
APWM0
APWM1
PWM
*
*
Outputs
Serial Ports E–F
P
RTCLKE
ORT
RTCLKF
RCLKE
TCLKE
RCLKF
TCLKF
TXE
TXF
*
*
G
101