IDT79RC64V474-200DZI

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Full model: IDT79RC64V474-200DZI

Manufacturer: Renesas (formerly IDT, now Renesas Electronics)

Device type: High-speed synchronous SRAM (with parity check)

Package: 165-ball BGA (13mm×15mm)

Operating voltage: 3.3V ±0.3V

Operating temperature: -40°C ~ +85°C (industrial grade)

Speed grade: 200MHz (-200 speed grade)

Capacity: 64Mb (4M×16 bits)

Access time: 3.0ns (maximum)

Cycle time: 5ns (200MHz operation)

Power consumption: 1.5W (full speed operation)

Interface type: Synchronous parallel (HSTL I/O)

Features: Built-in byte write enable, sleep mode

Description

Extending Integrated Device Technology’s (IDT) RISCore4000 basedchoices  ,  the  RC64474  and  RC64475  are  high  perfor-mance 64-bit microprocessors targeted towards applications that requirehigh  bandwidth,  real-time  response  and  rapid  data  processing  and  areideal  for  products  ranging  from  internetworking  equipment  (switches,routers)  to  multimedia  systems  such  as  web  browsers,  set-top  boxes,video games, and Windows®CE based products. These processors arerated  at  330  Dhrystone  MIPS  and  125  Million  floating  point  operationsper second, at 250 MHz. The internal cache bandwidth for these devicesis over 3GB/second. The 64-bit external bus bandwidth is at more than1000MB/s, and the 32-bit external bus bandwidth is at 500MB/s. The RC64474 is packaged in a 128-pin QFP footprint package anduses  a  32-bit  external  bus,  offering  the  ideal  combination  of  64-bitprocessing  power  and  32-bit  low-cost  memory  systems.  The  RC64475is packaged in a 208-pin QFP footprint package and uses the full 64-bitexternal  bus.  The  RC64475  is  ideal  for  applications  requiring  64-bitperformance and 64-bit external bandwidth.IDT’s RISCore4000 is a 250MHz 64-bit execution core that uses a5-stage  pipeline,  eliminating  the  “issue  restrictions”  associated  withother  more  complex  pipelines. 

Features

   1. High performance 64-bit microprocessor, based on the RISCore4000

       – Minimized branch and load delays, through streamlined5-stage scalar pipeline. 

       – Single and double precision floating-point unit

       – 125 peak MFLOP/s at 250 MHz

       – 330 Dhrystone MIPS at 250 MHz

       – Flexible RC4700-compatible MMU

       – Joint TLB on-chip, for virtual-to-physical address mapping

   2. On-chip two-way set associative caches

       – 16KB instruction cache (I-cache) 

       – 16KB data cache (D-cache)

   3. Optional I-cache and D-cache locking (per set), provides improved real-time support

   4. Enhanced, flexible bus interface allows simple, low-cost design

       – 64-bit Bus Interface option, 1000MB/s bandwidth support

       – 32-bit Bus Interface option, 500MB/s bandwidth support

       – SDRAM timing protocol, through delayed data in write cycles

       – RC4000/RC5000 family bus-protocol compatibility

       – Bus runs at fraction of pipeline clock (1/2 to 1/8)

   5. Implements MIPS-III Instruction Set Architecture (ISA)

   6. 3.3V core with 3.3V I/O

   7. Software compatible with entire RISController Series of Embedded Microprocessors 

   8. Industrial temperature range support

   9. Active power management–Powers down inactive units, through sleep-mode feature

 10. 100% pin compatibility between RC64574, RC64474 and RC4640

 11. 100% pin compatibility between RC64575, RC64475 and RC4650 

 12. RC64474 available in 128-pin QFP package, for 32-bit only systems

 13. RC64475 available in 208-pin QFP package, for full 64/32 bit systems

 14. Simplified board-level testing, through full Joint Test Action Group (JTAG) boundary scan 

 15. Windows® CE compliant

Pin function (key pin)

Applications

   1. Network switch/router data buffer

   2. Medical imaging equipment

   3. Military radar signal processing

   4. 5G base station equipment

Design considerations

   1. Signal integrity:

       - All address/data line lengths must match (deviation <50ps)

       - It is recommended to use a terminal resistor (50Ω)

   2. Power supply decoupling:

       - Each power supply pin is configured with a 0.1μF+10μF capacitor

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