71M6515H
A Maxim Integrated Products Brand
Energy Meter IC
DATA SHEET
JULY 2011
The pin PULSE_INIT determines the logic level applied to the pulse pins on power-up, i.e. with PULSE_INIT low, the pulse
pins will be initialized to low (default = 1).
The pulse width PW is controlled with the PULSEWIDTH register for the PULSER and PULSEW output pins per the following
formula:
2 ⋅ PULSEWIDTH +1
P =
W
2520.6
The PULSE3 and PULSE4 output pins will always generate pulses with 50% duty cycle.
Internal Data (Directly by CE)
Accumulation Interval
CE Operations
Accumulation 1
Accumulation 2
Accumulation 3
XFER
Post 0
READY
XFER
Post 1
READY
XFER
Post 2
READY
Post Processing
Pulse Generator
Pulse 0
Pulse 1
Pulse 2
Post-Processed Data
CE Operations
Accumulation Interval
Accumulation 1
Accumulation 2
Accumulation 3
XFER
Post 0
READY
XFER
Post 1
READY
XFER
Post 2
READY
Post Processing
APULSE write
Pulse -1
APULSE write
Pulse 0
APULSE write
Pulse 1
Pulse Generator
External (Host data is transferred to the pulse generator in the first accumulation interval after the
next READY)
Accumulation Interval
CE Operations
Post Processing
Host Processing
Pulse Generator
Accumulation 1
Accumulation 2
Accumulation 3
XFER
Post 0
READY
XFER
Post 1
READY
XFER
Post 2
READY
Host 0
APULSE write
Host 1
APULSE write
Host 2
APULSE write
Pulse -2
Pulse -1
Pulse 0
Figure 8: Pulse Generator Timing
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