TERN VE-LM 16 bit CPU [NEC V25] [x86 compatible]  8 MHZ C/C++ Programmable Controller, 11ch 12-bit ADC, 2 RS232 and 1 RS485, 24+ I/O, 3 timers and 2 ex counter, Real Time Clock + Battery, 8 comparators/4bit ADC

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(Rplaces C-Engine, V25-Engine)
16-bit processor module w/ ADC, RTC, 3 UARTs

As of 2003, this product is being discontinued as NEC has ended production on the NEC-V25.  Limited inventories for prior customers available.   

Please see A-Engine as a possible replacement.

VE-LM Specs/Features:
* Measures 3.6x2.3x0.5 inches
* 16-bit CPU (NEC V25), x86 compatible

* 8 MHz system clock
* Power consumption: 75 mA full speed, 30 mA standby
* Low power version: 55 mA full speed, 3 mA standby
* Temperature: -40 to +85 Celsius
* Up to 512 KB Flash/EPROM

* Up to 512 KB battery-backed SRAM
* 512-byte EEPROM
* 24 TTL I/Os w/ multiplexed functions
* 8 comparators/4-bit ADC, 4 interrupt inputs
* 3 timers, 2 external counters
* Two serial ports, optional third UART
* Real time clock, battery
* 11 ch. 12-bit ADC, up to 2.5 kHz sample rate (TLC2543), CE only

Measuring 3.6 by 2.3 by 0.5 inches, the V25-Engine-LM is a C/C++ programmable microprocessor core module (5V only) with a 16-bit CPU (NEC V25). It supports up to 512 KB ROM/Flash, 512 KB battery-backed SRAM, and a 512-byte EEPROM. A real-time clock (RTC72423) provides information on the year, month, date, hour, minute, second, and 1/64 second.

It also features DMA, three serial channels, three 16-bit timers, with two 16-bit counters for up to 500 kHz rising edge inputs, 24 digital I/O lines, 8 comparator inputs, five external interrupt inputs, power failure detection, watchdog timer, LED, and expansion ports. The comparator inputs can be used for either digital or analog inputs, and the comparator threshold voltage can be set in 16 steps by software.

Three serial ports are supported: V25-internal SER0 and SER1, and an optional UART (SCC2691) that supports 8-bit or 9-bit communication. The V25-internal 24 I/O lines are multifunctional and can be programmed as control, input, or output.  Three 16-bit timers can provide precise timing for applications. Sample interface circuit for integrating the V25-Engine into user product is available.

The V25-Engine-LM expects a regulated 5V voltage supply, and does not provide RS232 or RS485 drivers for the serial ports. The VE232 can be used to provide this.

The optional 12-bit ADC available has sample-and-hold, a high-impedance reference input, 11 single-ended 0-5V (or 0 to REF) inputs, and a 2.5 kHz sample rate.

The V25-Engine-LM is surface mounted.  The V25-Engine/C-Engine shares a similar pin-out and physical dimensions with the i386-Engine and A-Engine.

Ordering Information (Qty 1/100/1K/5K+)

Includes NEC V25, 2 UARTs, 3 timers, comparators, 15 I/Os,  watchdog timer, 512 byte EE.  Does not include add-on options. OEM option discounts available.

Add-on Options:

1) SRAM: 32KB/128KB/512KB    $8/$15/$40
2) Debug ROM (TDREM_V25) $30
3) Real-time clock and battery $20
4) Low-power version $25
5) UART (SCC2691) $20
6) VE232 interface board $69
7) 11 ch. 12-bit ADC $30


Development Service: Testech Electronics provides cost effective development service for a full turnkey solutions to assist our customer with automating or customised  project using Tern controller. We help you to implement your ideas and solve your problem quickly. Contact us at sales@testech-elect.com or call +65-67492162 for a discussion on how you can speed up your projects.

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