G65SC816 CALMIRCO | Alldatasheet
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Technical content
Features
Advanced CMOS design for low power consumption and increased noise immunity Emulation mode for total software compatibility with 6502 designs Full 16-bit ALU, Accumulator, Stack Pointer, and Index Registers Direct register for zero page addressing 24 addressing modes (including 13 original 6502 modes) Wait for Interrupt (WAI) and Stop the Clock (STP) instructions for reduced power consumption and decreased interrupt latency 91 instructions with 255 opcodes Co-Processor (COP) instruction and associated vector Powerful Block Move instructions Product Description The G65SC816 is an advanced CMOS 16-bit microprocessor featuring total software compatibility with 8-bit NMOS and CMOS 6500 series microprocessors. The G65SC816 provides 24 address lines for 16 Mbyte addressing, while providing both 8-bit and 16-bit operation. This microprocessor contains an Emulation (E) mode for emulating 8-bit NMOS and CMOS 6500 Series microprocessors. A software switch determines whether the processor is in the 8-bit emulation mode or in the native 16-bit mode. This allows existing 8-bit system designs to use the many powerful features of the G65SC816. Full 16-bit operation with 24 address lines for the
16 MByte memory
Program selectable 8-bit mode for 6502 coding compatibility Valid Program Address (VPA) and Valid Data Address (VDA) outputs for dual cache and DMA cycle steal implementation Vector Pull (VP) output indicates when interrupt vectors are being fetched. May be used for vectoring/prioritizing interrupts Abort interrupt and associated vector for interrupting any instruction without modifying internal registers Memory Lock (ML) for multiprocessor system implementation 40-pin DIP , 44-pin PLCC Contact factory for complete data sheet. A0 A15 CONROL SIGNALS SOBE RDY 2 (IN) 1 (OUT) 2 (OUT) Ø Ø Ø RES NMI I ABORTRQ SYNC VPA VDA E M/X W ML VP D0/BA0-D7/BA7 INDEX X & Y STACK POINTER REGS (16) ALU (16) ACCUMULATOR (16) INTERRUPT CONTROL TIMING AND CLOCK GEN SYSTEM CONTROL CPU STATUS REGDATA BUS BANKADDRESS BUFFER ADDRESS BUFFER 16-BIT INTERNAL DATA BUS INSTRUCTION DECODE AND CONTROL PROGRAM COUNTER (16) DIRECT REG (16) PROGRAM DATA BANK RAGS (8) Block Diagram
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215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214 Fax: (408) 263-7846 8/96
Product Identification Number Package P Plastic DIP (40) PE PLCC (44) Temperature/Processing I -40 OC to +85 OC, –5% P .S. Tol. Performance Designator Designators selected for speed and power specifications 4 4MHz 5 5MHz G55C816 P I -4 G65SC816 A7 A8 A9 A10A11V V A12 A13 A14 A15SS SSSS 6 5 4 3 2 1 44 43 42 41 40 NMI VPA VDD V SS 18 19 20 21 22 23 24 25 26 27 28 ML IRQ ABORTRDYVP RESV VDAM/X Ø2(IN) BESS E R/W V D0/BA0 D1/BA1 D2/BA2 D3/BA3 D4/BA4 D5/BA5 D6/BA6 D7/BA7 DD G65SC816 SS DD SS SS VP ABORT IRQ ML NMI RDY VPA V A10 A11 DD RES W VDA M/X 2(IN) BE E DO/BA0 D1/BA1 D2/BA2 D3/BA3 D4/BA4 D5/BA5 D6/BA6 D7/BA7 A15 A14 A13 A12 V Ø DD G65SC816 Pin Assignments
Ordering Information
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