MVME162-201 (Motorola/Emerson, 68LC040, 1MB, 2IP, 4 serial ports)

Location: Same configuration but different batches/versions of MVME162-200; Core parameters are completely the same, with only minor differences in PCB/firmware.

I. Basic Information

Model: MVME162-201

Brand: Motorola / Emerson

Form: 6U VME64 single-board computer (SBC)

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

Core Features: 1MB, no network, no SCSI, 2×IP, 4×serial ports, 512KB SRAM

II. Core Hardware Specifications (Completely the same as 200)

1) Processor

MC68LC040, 25 MHz

❌ No FPU; ✅ MMU + 8KB unified cache

Performance: Approximately 15 MIPS, only integer operations

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: 6U VME (233 × 160 mm)

III. Key Differences between 200 and 201 (Plain Text)

200: Early version, PCB Rev A/B, firmware V1.x

201: Later version, PCB Rev C/D, firmware V2.x; Function / Pin / Interface fully compatible with 200, can be directly replaced

Common Points: LC040/25/❌ FPU/1MB/❌ Network ❌ SCSI/2IP/4 Serial Ports

IV. Functional Features

Upgraded compatible version of 200: Completely replaces 200, fixes early minor bugs, better stability

Ultra-compact + Multiple Serial Ports: 1MB + 2IP + 4 serial ports, suitable for multi-serial port devices, no network storage scenarios

Lowest Cost: Series entry-level, suitable for simple integer control, budget-sensitive projects

V. Typical Applications

MVME162-200 Direct Replacement: Old 200 is broken, use 201 directly, no need to modify configuration

Multi-Serial Port Acquisition Control: 4 serial ports connected to instruments/sensors, no complex calculations, no network

Low-cost VME System: Simple logic control, no local storage, limited budget