71M6541D Datasheet, PDF (161/166 Pages) Maxim Integrated Products – 0.1% Accuracy Over 2000:1 Current Range Energy Meter ICs

71M6541D/F/G and 71M6542F/G Data Sheet
Pin
(64-pin)
39
60
61
59
35
34
51
58
--
Pin
(100-pin)
59
92
93
91
55
54
81
90
26, 40,
48, 49,
50, 63,
64, 65,
66, 73,
74, 77,
78, 79,
84
Name
ICE_E
TMUXOUT/SEG47
TMUX2OUT/SEG46
RESET
RX
TX
TEST
PB
NC
Type Circuit
Function
ICE Enable. When zero, E_RST, E_TCLK, and E_RXTX
I
2
become SEG50, SEG49, and SEG48 respectively. For
production units, this pin should be pulled to GND to disable
the emulator port.
O
4, 5
Multiple-Use Pins. Configurable as either multiplexer/clock
output or LCD segment driver using the I/O RAM registers.
Chip Reset. This input pin is used to reset the chip into a
known state. For normal operation, this pin is pulled low. To
I
2 reset the chip, this pin should be pulled high. This pin has
an internal 30 μA (nominal) current source pulldown. No
external reset circuitry is necessary.
I
3
UART0 Input. If this pin is unused it must be terminated
to V3P3D or GNDD.
O
4 UART0 Output
I
7
Enables Production Test. This pin must be grounded in
normal operation.
Pushbutton Input. This pin must be at GNDD when not active
I
3
or unused. A rising edge sets the WF_PB flag. It also
causes the part to wake up if it is in SLP or LCD mode. PB
does not have an internal pullup or pulldown resistor.
N/C — No Connection. Do not connect this pin.