I. Basic Information

Model: MVME162-212

Brand: Motorola / Emerson (now Schneider)

Form: 6U single-height VME64 SBC

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

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

II. Hardware Specifications (Compared with 210/211)

1) Processor

MC68LC040, 25 MHz

❌ No FPU (integer), MMU + 8KB Cache

Same as 210; 211 has 68040 with FPU

2) Memory (Same as 210/211)

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 (Key Difference: Network, No SCSI)

VMEbus: VME64 A32/D32, Master/Slave, DMA

Ethernet: ✅ 10 Mbps (AUI/BNC) + DMA

Serial Ports: 4×RS-232 (Console + 3 optional)

SCSI: ❌ None (210/211 have)

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

III. Core Differences of 210/211/212/213 (At-a-glance Selection) Table

Model CPU FPU DRAM SCSI Ethernet IP Slot Primary Use Case

210 LC040 ❌ 4MB ✅ ❌ 2 Local Storage Control

211 040 ✅ 4MB ✅ ❌ 2 Floating Point + Local Storage (Rare)

212 LC040 ❌ 4MB ❌ ✅ 2 Network Control (Mainstream)

213 LC040 ❌ 4MB ✅ ✅ 2 Top Configuration: Network + SCSI

IV. Features of 212

200 Series' "Network Dominant": 4MB memory + 10M network port, suitable for distributed, networked communication embedded systems

Without SCSI, focused on network: Sacrifices local storage interface to reduce costs, matching "Network + Memory" scenarios

2IP + 4 Serial Ports: Strong expansion capability, can plug in IP modules to supplement analog / fieldbus

V. Typical Applications

Network Embedded Control: VxWorks system, networking through Ethernet, no local hard drive requirement

Multiple Serial Ports + Network Acquisition: 4 serial ports + network port, simultaneously connecting serial devices and upper computer

200/201/202 Upgrade (Requires Network): The old 1MB board is insufficient and needs networking, directly replace with 212