MOTOROLA MVME133SA-20A｜VMEbus 32-bit Single Board Computer｜

1. Processor and Operations
Main processor: MC68020 32-bit microprocessor, with a main frequency of 20MHz
Floating point coprocessor: MC68882 (20MHz), with strong floating-point computing capabilities
Local memory: 1MB 32-bit wide DRAM, accessible through VMEbus
Non volatile storage: 4 28 pin JEDEC slots, supporting up to 256KB EPROM/EEPROM (dual 16 bit group)
2. Communication and Interface
VMEbus: System controller function, 3-level arbiter, single level bus request (jumper optional), supports 7-level interrupts
Serial port (3 channels):
1 x DB25 RS-232C debugging port (MC68901 MFP)
2 × Z85C30 multi protocol serial ports: Port A (RS-422/485), Port B (RS-232C), supporting synchronous/asynchronous
Timer/watchdog: 3 8-bit programmable timers, supporting tick and watchdog functions
Real time clock: MM58274A calendar clock (RTC)
Front panel: Run/Stop/Fault LED, RESET/Abort buttons, supports remote reset (P2 edge connector)
3. Electrical and Environmental
Power supply: VMEbus standard+5V DC
Working temperature: Industrial grade 0 ℃~+60 ℃ (wide temperature version -40 ℃~+85 ℃)
Storage temperature: -40 ℃ to+85 ℃
Size: Standard VME double height and single width (approximately 160 × 233mm)
Function
High performance real-time processing
32-bit MC68020+floating-point coprocessor, meeting the requirements of complex control algorithms and high-speed data processing, compatible with real-time operating systems such as VxWorks, pSOS, VRTX, etc.
Rich I/O and bus capabilities
3-channel serial port+VMEbus main control, can directly connect to on-site instruments PLC、 Motion controller, building a distributed control system.
Industrial grade reliability
Designed with wide temperature range, watchdog, hardware interrupt, and remote reset, it meets the long-term stable operation requirements of harsh industrial environments.
High compatibility
Compatible with MVME133, MVME133A, and MVME133S series, it can be directly replaced and upgraded to protect existing system investments.

MOTOROLA MVME133SA-20A｜VMEbus 32-bit Single Board Computer｜