Description

TEWS Technologies TPMC917-10R PMC Industrial Memory & 4-CH RS232 Communication Module

Basic Technical Specifications

• Model: TPMC917-10R
• Manufacturer: TEWS Technologies GmbH (Germany)
• Product Status: Discontinued (end of production since June 30, 2020)
• Warranty: One Year
• Form Factor: Single-width 32-bit PMC card (compliant with IEEE P1386.1), dimensions 149mm × 74mm
• Bus Standard: PCI 2.1, 33MHz 32-bit PCI, supports 3.3V / 5V dual PCI signaling voltage
• Operating Temperature: 0°C ~ +70°C
• Storage Temperature: -40°C ~ +85°C
• MTBF: 346,000 hours (calculated per MIL-HDBK217F standard at 20°C ambient)
• Protection Class: IP20 for embedded chassis/rack installation

Core Memory Parameters

• Non-volatile SRAM: 4MB total, divided into 2 independent banks (512K × 32bit per bank)
• Power Backup: Onboard rechargeable lithium battery for automatic power-fail data retention
• Battery Monitoring: Automatic 24-hour periodic self-test, generates system interrupt for low battery alarm
• Backup Switching: Switches to battery power within 1.5μs once 5V main supply drops below threshold; DIP switch selects onboard battery or external backup battery via P14 connector.
• 

Serial Communication Interface (Exclusive for -10R Version)

• Channels: 4 isolated RS232 asynchronous serial ports (ST16C654 quad UART controller)
• Max Baud Rate: 115.2 kbps per channel
• Buffer: 64-byte TX FIFO + 64-byte RX programmable FIFO per channel, reduces host CPU load
• ESD Protection: ±15kV HBM human body model, ±6kV IEC 61000-4-2 surge protection on all serial lines
• Connector: Front panel DB25 socket + rear P14 rear I/O dual wiring options
• Handshake Signals per channel: TX, RX, RTS, CTS, GND

Built-in Protection & Reliability

1. Automatic power loss seamless memory switching to avoid critical runtime data loss
2. Complete EMC surge, ESD and reverse voltage protection for industrial harsh environments
3. PCI interrupt status register for centralized serial port fault and data event reporting
4. No fan passive cooling design for long-term 24/7 unattended continuous operation