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UL
®
LSI/CSI
LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747
LS7366R
(631) 271-0400 FAX (631) 271-0405
May 2006
PIN ASSIGNMENT TOP VIEW
LSI
A3800
32-BIT QUADRATURE COUNTER WITH SERIAL INTERFACE
GENERAL FEATURES: • Operating voltage: 3V to 5.5V (VDD - VSS) • 5V count frequency: 40MHz • 3V count frequency: 20MHz • 32-bit counter (CNTR). • 32-bit data register (DTR) and comparator. • 32-bit output register (OTR). • Two 8-bit mode registers (MDR0, MDR1) for programmable functional modes. • 8-bit instruction register (IR). • 8-bit status register (STR). • Latched Interrupt output on Carry or Borrow or Compare or Index. • Index driven counter load, output register load or counter reset. • Internal quadrature clock decoder and filter.