The µPD30181A and 30181AY (VR4181A), which are high-performance 64-/32-bit microprocessors employing the TM TM RISC (reduced instruction set computer) architecture developed by MIPS , are products in the VR Series of microprocessors manufactured by NEC. The VR4181A includes as its CPU the VR4120™ core, an ultra-low-power-consumption core featuring cache memo.
{ VR4120 core (64-bit RISC core) on chip as CPU { Pipeline clock: 131 MHz { Conforms to MIPS III (except for FPU, LL and SC instructions) and MIPS16 instruction sets { Supports MACC and DMACC high-speed product-sum operation instructions { On-chip cache memory Capacity includes 8 KB instruction cache and 8 KB data cache { Employs a writeback cache { Physical addresses: 32 bits Virtual addresses: 40 bits { On-chip 32 double-entry TLB { Effective power management using four modes: Fullspeed, Standby, Suspend, and Hibernate { Employs a high-performance internal system bus (Tbus) { DRAM controller.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | UPD30181 |
NEC |
64/32 Bit Microcontroller | |
2 | UPD30102 |
NEC |
64/32-bit Microprocessor | |
3 | UPD30121 |
NEC |
64-/32-BIT MICROPROCESSOR | |
4 | uPD30200 |
NEC |
64-Bit Microprocessor | |
5 | uPD30210 |
NEC |
64-Bit Microprocessor | |
6 | UPD30500 |
NEC |
64-BIT MICROPROCESSOR | |
7 | UPD30500A |
NEC |
64-BIT MICROPROCESSOR | |
8 | UPD30500B |
NEC |
64-BIT MICROPROCESSOR | |
9 | UPD31172 |
NEC |
MOS INTEGRATED CIRCUIT | |
10 | UPD3140GS |
NEC |
DUAL PLL FREQUENCY SYNTHESIZER LSI | |
11 | UPD3301 |
NEC |
Programmable CRT Controller | |
12 | UPD3301-1 |
NEC |
Programmable CRT Controller |