668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 17

• Manufacturer Part Number: 668-0003-C
• Description: IC CPU RABBIT2000 30MHZ 100PQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 668-0003-C

• Rohs Status: RoHS non-compliant
• Processor Type: Rabbit 2000 8-Bit
• Speed: 30MHz
• Voltage: 2.7V, 3V, 3.3V, 5V
• Mounting Type: Surface Mount
• Package / Case: 100-MQFP, 100-PQFP
• Features: -
• Other names: 316-1004; 668-0003

counter that can be read but not written. There are two 10-bit match registers and compar-
ators. If the match register matches the counter, a pulse is output. Thus the timer can be
programmed to output a pulse at a predetermined count in the future. This pulse can be
used to clock the timer-synchronized parallel-port output registers as well as cause an
interrupt. Timer B is convenient for creating an event at a precise time in the future under
program control.
Figure 2-3 illustrates the Rabbit timers.
Chapter 2 Rabbit Design Features
perclk/2
Timer B System
f/8
A1
Timer A System
Figure 2-3. Rabbit Timers
10-bit counter
next match
next match
match reg
match reg
10 bits
compare
Timer_B1
Timer_B2
A4
A5
A6
A7
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