RTC
®
5 PC Interface Board
Rev. 1.9 e
14 Technical Specifications of the RTC
®
5 PC Interface Board
571
innovators for industry
Inputs for external
start and stop signals
• /START
• /STOP
• Reference
TTL active-LOW, internally
connected to +3.3 V via
pull-up resistors (4.7 k
)
edge sensitive
level sensitive
GND
Other signals
• BUSY OUT
• +5 V
• Reference
5 V, TTL active-high,
max. 10 mA
max. 100 mA
GND
• EXTENSION 1 Connector
Connector
40-pin socket connector,
output signal level
configurable (via
JP1
)
Digital output
• LOW level
• HIGH level
• Max. current load
• Reference
• LATCH signal
16 bits, buffered
< 0.4 V
> 2.0 V (3.3 V or 5 V)
±8 mA
GND
3.3 V or 5 V,
TTL active-high,
5
µ
s pulse, max. 10 mA
Digital input
• LOW level
• HIGH level
• Max. input voltage
range
• Input resistance
• Reference
• SYNC signal
16 bits
< 0.5 V
> 2.6 V … 24 V
–0.5 V … +26 V
> 10 k
GND
3.3 V or 5 V, TTL active-
high, square wave signal
(5
µ
s pulse, 10
µ
s period)
max. 10 mA
Other signals
• BUSY OUT
• VCC
• +5 V
• Reference
3.3 V or 5 V, TTL active-
high, max. 10 mA
3.3 V or 5 V,
max. 100 mA
max. 100 mA
GND
• EXTENSION 2 Connector
Connector
26-pin socket connector,
configurable (via
JP2-JP8
)
Digital output
• LOW level
• HIGH level
• Max. current load
• Reference
• LATCH signal
8 bits, buffered
< 0.4 V
> 2.0 V
±8 mA
GND
5 V, TTL acive-high,
5
µ
s pulse, max. 10 mA
Laser signals
LASER1, LASER2
(see LASER connector)
Other signals
• +5 V
• Reference
max. 100 mA
GND