MVME162‑222 (Motorola/Emerson, 68LC040 without FPU, 4MB, 2IP, only network port, no SCSI, economical networking model)

Position: MVME162‑200 "212 Upgrade Edition / 220 Reduced Edition" - Like 212, it has no SCSI, only Ethernet, but upgraded to dual high + stronger I/O; compared to 220, it eliminates FPU and SCSI, focusing on low-cost, pure networking, no floating point, and no local storage VME control scenarios. 1. Basic Information

Model: MVME162‑222

Brand: Motorola / Emerson (now Schneider)

Form: 6U dual high VME64 SBC (212 is single high, 222 is dual high)

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

Key features: 4MB DRAM, 128KB SRAM, 1MB Flash, 2×IP, 4×Serial Port, ✅ 10Mbps Ethernet, ❌ SCSI, ❌ Hardware FPU

II. Hardware Specifications (Key points: dual high, only network interface, no FPU/SCSI)

1) Processor (Same as 212/213/216, no FPU)

MC68LC040, 25 MHz

❌ No FPU (pure integer), ✅ MMU + 8KB Cache

220 has FPU; 211 has FPU but no network interface

2) Memory (Same as 212/213/220)

DRAM: 4 MB (parity)

SRAM: 128 KB (battery backup)

Flash: 1 MB

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

3) I/O Interfaces (Critical: only Ethernet, no SCSI; dual high, 4 serial ports)

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

Ethernet: ✅ 10 Mbps (AUI/BNC) + DMA (same as 212/213/216/220)

Serial ports: 4×RS-232 (Console + 3 optional; 212 has only 2 serial ports, 222 upgraded to 4 serial ports)

SCSI: ❌ No (same as 212; 213/216/220 have SCSI)

IP slot: 2×IndustryPack

Parallel port: None

4) Electrical / Environmental

Power supply: +5 V @ 3.5 A

Operating temperature: 0 ℃ ~ +70 ℃

Size: 233 × 160 mm (dual high, more stable and better heat dissipation than 212 single high)

III. Ultimate Comparison of 210/211/212/213/216/220/222 (at a glance) Table

Model CPU FPU DRAM SRAM SCSI Ethernet Serial Ports Form Factor Position

210 LC040 ❌ 4MB 128KB ✅ ❌ 2 Single High 4MB + SCSI

211 040 ✅ 4MB 128KB ✅ ❌ 2 Single High 4MB + Floating Point + SCSI

212 LC040 ❌ 4MB 128KB ❌ ✅ 2 Single High 4MB + Network Port (2 Serial Ports)

213 LC040 ❌ 4MB 128KB ✅ ✅ 4 Single High 4MB + Network + SCSI (Mainstream)

216 LC040 ❌ 8MB 512KB ✅ ✅ 4 Single High 8MB + Network + SCSI (High Memory Configuration)

220 040 ✅ 4MB 128KB ✅ ✅ 4 Dual High 4MB + Network + SCSI + Floating Point (Top Configuration for Computing)

222 LC040 ❌ 4MB 128KB ❌ ✅ 4 Dual High 4MB + Network Port (4 Serial Ports, Dual High, Economy Model)

Four, Key Features of 222

Dual High + 4 Serial Ports, stronger than 212: 212 is Single High + 2 Serial Ports, 222 upgrades to Dual High + 4 Serial Ports, richer I/O and more stable structure

Pure Networking, No Storage, No Floating Point: No SCSI, No FPU, focused on Ethernet Networking + Serial Port Control, cost lower than 213/220

212 Upgrade / 220 Cost Reduction Preferred: Original 212 with insufficient serial ports and needing Dual High, directly replace with 222; Original 220 project not requiring Floating Point / SCSI, 222 is more cost-effective

Five, Typical Applications

Pure Networking Control: VxWorks system, multi-serial port devices, Ethernet communication, no need for SCSI hard drive, no floating point operation

212 Upgrade: Original 212 (Single High, 2 Serial Ports) is insufficient, needs 4 Serial Ports + Dual High structure, directly replace with 222

Economy VME System: Limited budget, only needs networking + serial ports, no local storage requirement, 222 has the highest cost-performance ratio