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VR Series Microprocessors
NEC Electronics Inc.
VR4111, VR4121, and VR4181 Comparison
VR4111 VR4121 VR4181
CPU Core VR4110 VR4120 VR4110
Maximum Pipeline Clock 84 MHz 168 MHz 66 MHz
Cache Size Inst: 16 KB/Data: 8 KB Inst: 16 KB/Data: 8 KB Inst: 4 KB/Data: 4 KB
Performance 110 Dhrystone MIPS 216 Dhrystone MIPS 87 Dhrystone MIPS
Instruction Set MIPS III, MIPS 16 MIPS III, MIPS 16 MIPS III, MIPS 16
MAC Instruction Single-cycle, 16-bit Single-cycle, 32-bit Single-cycle, 16-bit
Operating Voltage 2.5 V core; 3.3 V I/O 2.5 V core; 3.3 V I/O 2.5 V core; 3.3 V I/O
Integrated Peripherals Same Same Same plus:
CompactFlash
Interface LCD controller
USB functional interface
Memory Interface
64 MB DRAM
64 MB ROM
64 MB DRAM (SDRAM)
64 MB ROM
64 MB DRAM
64 MB ROM
Power Consumption 185 mW 385 MW 250 MW
Package 224-pin FPBGA 224-pin FPBGA 160-pin LQFP
Process Technology 0.25 micron 0.25 micron 0.25 micron
Contact List
USA
VR Series RISC Products Group
NEC Electronics Inc.
2880 Scott Boulevard
Santa Clara, CA 95050
Tel: (800) 366-9782 or (408) 588-6000
E-mail: vrsupport@el.nec.com
Japan
NEC Corporation
1753 Shimonumabe, Nakahara-Ku
Kawasaki, Kanagawa 211, Japan
Tel: +81-44-435-1485
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