Jameco Electronics 3000 ユーザーズマニュアル

(l) The quadrature decoder hardware can be configured to use a 10-bit counter in 

place of the existing 8-bit counter.

(m)An option was added to alternatively multiplex PWM outputs, slave chip select 

(/SCS), and Serial Ports E and F transmit and receive clocks on other pins.

(n) The Schmitt trigger IC normally required for the low power 32.768 kHz oscil-

lator circuit is now integrated inside the Rabbit 3000A.

NOTE: Based on this modification, a new low-power oscillator circuit is recommended 

for use with Rabbit 3000A-based systems. Please refer to TN235, External 32.768 kHz 
Oscillator Circuits, for more information on the circuit.