V104
Chapter 1: Introduction
1-2
A 16-pin LCD interface header supports various types of LCD modules. By default, the LCD select line is
active high.
The optional VE232 provides regulated 5V power and RS232/RS485 drivers for the V104. The V104 can
also be installed on the A-Drive to provide regulated 5V power and RS232/RS485 drivers. TERN also
offers custom hardware and software design, based on the V104 or other TERN controllers.
1.2
Features
Standard Features
•
Dimensions:
4.0 x 3.5 x 0.5 inches
•
Power consumption: 100 mA at 5V, 40 mA standby (with standard parts)
•
Low power version: 60 mA full speed, 5 mA standby (with low power parts)
•
Power Input:
+5V regulated DC without VE232
•
+9V to +12V unregulated DC with VE232
•
16-bit CPU (NEC V25), 8 MHz, Intel 80x86 compatible, C/C++ programmable
•
ROM and SRAM up to 1MB, 512-byte EEPROM (or up to 2KB) and 256 bytes built-in-CPU
SRAM
•
Five external interrupts
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24 bi-directional digital I/O lines
•
8 comparator inputs
•
Two 16-bit timers, one 16-bit time base counter
•
Two 16-bit counters or DMA. The counter can count external signal rising edges up to 500 KHz
•
Two high speed serial ports from the V25 CPU
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Supervisor chip (691) for power failure, reset and watchdog
•
LCD interface
Optional Features
:
•
32KB, 128KB, or 512KB SRAM
•
11 channels of 12-bit ADC, sample rate up to 10 KHz
•
4 channels of 12-bit DAC (MAX 537) with 2.5V Reference
•
SCC2691 UART (on-board) supports 8-bit or 9-bit networking
•
Real-time clock RTC72423, lithium coin battery
•
VE232 add-on board for regulated 5V power & RS232/RS485 drivers
•
PC104 64-pin connector
•
16x2 character LCD
Figure 1.2 VE232 interface board
