Lpm_counter (counter), Features, Lpm_counter (counter) -1 – Altera Integer Arithmetic IP User Manual
Page 19: Features -1
LPM_COUNTER (Counter)
2
2014.12.19
UG-01063
The LPM_COUNTER megafunction is a binary counter that creates up counters, down counters and up
or down counters with outputs of up to 256 bits wide.
The following figure shows the ports for the LPM_COUNTER megafunction.
Figure 2-1: LPM_COUNTER Ports
ssclr
sload
inst
LPM_COUNTER
q[]
sset
cout
data[]
clk_en
cnt_en
cin
aclr
aload
aset
updown
Features
The LPM_COUNTER megafunction offers the following features:
• Generates up, down, and up/down counters
• Generates the following counter types:
• Plain binary— the counter increments starting from zero or decrements starting from 255
• Modulus—the counter increments to or decrements from the modulus value specified by the user
and repeats
• Supports optional synchronous clear, load, and set input ports
• Supports optional asynchronous clear, load, and set input ports
• Supports optional count enable and clock enable input ports
• Supports optional carry-in and carry-out ports
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