71m6511h-igtr Maxim Integrated Products, Inc., 71m6511h-igtr Datasheet - Page 71

• Manufacturer Part Number: 71m6511h-igtr
• Description: Single-phase Energy Meter Ic
• Manufacturer: Maxim Integrated Products, Inc.

Page: 71 of 95
Address
0x2D
0x3C
0x28
0x29
0x36
0x37
0x26
0x27
CE
PULSE_WIDTH
PULSE_SLOW
PULSE_FAST
EXT_PULSE
SUM_PRE
APULSEW
APULSER
WRATE
Name
Default
1556
2520
15
50
© 2005-2007 TERIDIAN Semiconductor Corporation
1
1
0
0
Description
When PULSE_SLOW > 0, the pulse generator input is reduced 64x.
When PULSE_FAST > 0, the pulse generator input is increased 16x.
These two parameters control the pulse gain factor X (see table below). Allowed
values are either 1 or –1.
Kh =
VMAX*IMAX*47.1132 / (In_8*WRATE*N
VMAX*IMAX*36.2409 / (In_8*WRATE*N
PRE_SAMPS * SUM_CYCLES. This variable is also called N
Should be 15 or 0. When zero, causes the pulse generators to respond to
WSUM_X and VARSUM_X. Otherwise, the generators respond to values the
MPU places in APULSEW and APULSER.
The maximum pulse width (low-going pulse) is:
(2 * PULSE_WIDTH + 1) * 397µs (for MUX_DIV = 1)
(2 * PULSE_WIDTH + 1) * 305µs (for MUX_DIV = 2)
0 is a legitimate value.
Wh pulse generator input, to be updated by the MPU when using external pulse
generation (see DIO_PW bit). The output pulse rate is:
APULSEW * F
This input is buffered and can be updated by the MPU during a computation in-
terval. The change will take effect at the beginning of the next interval.
VARh pulse generator input to be updated by the MPU when using external
pulse generation (see DIO_PV bit). The output pulse rate is:
APULSER * F
This input is buffered and can be updated by the MPU during a computation in-
terval. The change will take effect at the beginning of the next interval.
X
1.5 * 2
1.5 * 2
1.5 * 2
1.5
2
6
-4
= 6
= 96
S
= 0.09375
S
*2
* 2
-32
-32
* WRATE * 2
Single-Phase Energy Meter IC
* WRATE * 2
PULSE_SLOW
-1
-1
1
1 (default)
71M6511/71M6511H
-14
-14
DATA SHEET
ACC
ACC
*X) Wh/pulse (for MUX_DIV = 1).
*X) Wh/pulse (for MUX_DIV = 2).
1
1 (default)
PULSE_FAST
-1
-1
ACC
AUGUST 2007
.
V2.6