I. Basic Information

Model: MVME162-202

Brand: Motorola / Emerson

Form: 6U VME64 single-board computer (SBC), double high size

CPU: MC68LC040 @ 25 MHz (❌ No FPU, ✅ MMU, 8KB Cache)

Key Features: 1MB DRAM, 512KB SRAM, 2×IP, 4×RS-232, no network, no SCS

II. Core Hardware Specifications (Consistent with 200/201)

1) Processor

MC68LC040, 25 MHz

No FPU (only integer), MMU + 8KB unified cache

Performance: ≈ 15 MIPS

2) Memory

DRAM: 1 MB (parity)

SRAM: 512 KB (battery backup)

Flash: 1 MB

NVRAM/RTC: 8 KB + real-time clock (battery backup)

3) I/O Interfaces

VMEbus: VME64 A32/D32, master/slave, DMA, system controller

Ethernet: ❌ No onboard network interface

Serial Port: 4×RS-232 (Console + 3× configurable)

SCSI: ❌ No SCSI

IP Slot: 2×IndustryPack (IP) expansion slots

Parallel Port: None

4) Electrical / Environmental

Power Supply: +5 V @ 3.5 A

Operating Temperature: 0 ℃ ~ +70 ℃

Size: 233 × 160 mm

III. Differences between 200 / 201 / 202 (Same configuration, different versions)

200: Early Rev A/B, firmware V1.x; first-generation streamlined version

201: Mid-term Rev C/D, firmware V2.x; fixed minor bugs, compatible with 200

202: Final production Rev E/F, firmware V3.x; optimal stability, fully compatible with 200/201, recommended replacement

Common points: LC040/25/❌FPU/1MB/❌network ❌SCSI/2IP/4 serial ports

IV. Functional Features

Final stable version: Upgrade replacement for 200/201, hardware/firmware optimization, more reliable long-term operation

Minimal configuration + multiple serial ports: 1MB + 2IP + 4 serial ports, suitable for multi-serial port devices, no network / storage scenarios

Fully compatible replacement: Direct replacement for 200/201, no need to modify hardware / software configuration

V. Typical Applications

MVME162-200/201 Upgrade Replacement: For old versions with faults / aging, directly upgrade to 202

Multi-serial port acquisition control: 4 serial ports for connecting instruments / sensors, no complex calculations, no network

Low-cost VME system: Simple logic control, budget-sensitive, no local storage requirements