LS7266R1

UL ® LSI/CSI LSI Computer Systems, Inc. 1235 Walt Whitman Road, Melville, NY 11747 YLCNTR/YLOL FCK 1 2 V DD (+5V) 3 D0 D1 D2 D3 D4 D5 D6 D7 4 5 6 7 8 9 10 11 LS7266R1 (631) 271-0400 FAX (631) 271-0405 December 2002 PIN ASSIGNMENT - TOP VIEW 28-Pin Package 28 27 26 25 24 23 22 21 20 19 18 17 16 15 YRCNTR/YABG YFLG1 YFLG2 YA YB XFLG2 XFLG1 XB XA XLCNTR/XLOL XRCNTR/XABG X/Y RD CS A3800 24-BIT DUAL-AXIS QUADRATURE COUNTER FEATURES: 30 MHz count frequency in non-quadrature mode, 17MHz in x4 quadrature mode. Dual 24-bit counters to support X and Y axes in motion control applications. Dual 24-bit comparators. Digital filtering of the input quadrature clocks Programmable 8-bit separate filter clock prescalers for each axis. Error flags for noise exceeding filter band width. Programmable Index Input and other programmable I/Os. Independent mode programmability for each axis. Programmable count modes: Quadrature (x1, x2, x4) / Non-quadrature, Normal / Modulo-N / Range Limit / Non-Recycle, Binary / BCD. 8-bit 3-State data I/O bus. 5V operation (VDD-VSS). TTL/CMOS compatible I/Os. LS7266R1 (DIP); LS7266R1-SD (Skinny DIP); LS7266R1-S (SOIC); LS7266R1-TS (TSSOP) LS726 6R1 V SS (GND) 12 C/D 13 WR 14 LS7266R1 Registers: LS7266R1 has a set of registers associated with each X and Y axis. All X-axis registers have the name prefix X, whereas all Y-axis registers have the prefix Y. Selection of a specific register for Read/Write is made from the decode of the thre...