Datasheet

71M6513/71M6513H
3-Phase Energy Meter IC
DATA SHEET
SEPTEMBER 2011
© 2005-2011 Teridian Semiconductor Corporation Page: 101 of 104
A Maxim Integrated Products Brand
Digital Pins
Name
Pin #
Type
Circuit
Description
DIO_3,
DIO_2,
DIO_1,
DIO_0
21
20
19
18
I/O 3, 4
Digital input/output pins 0 through 3. If unused, these DIO pins must be
configured as outputs or terminated to V3P3 or ground.
COM3,
COM2,
COM1,
COM0
25
24
23
22
O 5
LCD Common Outputs: These 4 pins provide the select signals for the
LCD display.
SEG0…SEG2,
SEG8…SEG23
See
pinout
O 5 Dedicated LCD Segment Output.
SEG24/DIO4…
…….
SEG41/DIO21
See
pinout
I/O 3, 4, 5
Multi-use pins, configurable as either LCD SEG driver or DIO (DIO4 =
SCK, DIO5 = SDA when configured as EEPROM I/F, WPULSE = DIO6,
VARPULSE = DIO7 when configured as pulse outputs). If unused, these
pins must be configured as outputs or terminated to V3P3/ground.
SEG7/MUX_SYNC 37 O 4, 5
Multi-use-pin LCD Segment Output/ MUX_SYNC is output for Synchron-
ous serial interface
SEG6/SRDY 35 I/O 2, 5
Multi-use-pin, LCD Segment Outputs/ SRDY input for Synchronous serial
interface. If unused, this pin must be terminated to ground.
SEG5/SFR
11
O
4, 5
Multi-use-pin, LCD Segment Output/ SFR output for SSI.
SEG4/SDATA
10
O
4, 5
Multi-use-pin, LCD Segment Output/ SDATA output for SSI.
SEG3/SCLK
6
O
4, 5
Multi-use-pin, LCD Segment Output/ SCLK output for SSI.
RESETZ 74 I 1
This pin is used to reset the chip into a known state. For normal operation,
this pin is set to 1. To reset the chip, this pin is driven to 0. This pin has an
internal 30μA (nominal) current source pull-up but no Schmitt-trigger
circuitry. The minimum width of the pulse is 5μs. A 0.1µF capacitor to
GNDA should be connected to this pin. Since the chip resets itself at
power-up, no other external reset circuitry is required.
RX 71 I 3
UART input. The voltage applied at this input must be below 3.6V. If un-
used, the RX pin must be terminated to V3P3 or ground.
TX
5
O
4
UART output.
OPT_RX 89 I 7
Optical Receive Input: This pin receives a signal from an external photo-
detector used in an IR serial interface. If unused, the OPT_RX pin must
be terminated to V3P3 or ground.
OPT_TX 3 O 4
Optical LED Transmit Output: This pin is designed to directly drive an LED
for transmitting data in an IR serial interface. Can be tristated with
OPT_TXDIS to be multiplexed with other DIO pins.
CKTEST
8
O
4
Clock PLL output. Can be enabled and disabled by CKOUT_EN.
TMUXOUT 4 O 4 Digital output test multiplexer. Controlled by TMUX[3:0].
E_RXTX
2
I/O
1, 4
Emulator serial data.
E_TBUS[3]
E_TBUS[2]
E_TBUS[1]
E_TBUS[0]
12
13
14
15
O 4 Emulator trace bus. These pins have internal pull-up resistors.
E_ISYNC/BRKRQ
29
I/O
1, 4
Emulator handshake. This pin has an internal pull-up resistor.
E_TCLK
100
O
4
Emulator clock. This pin has an internal pull-up resistor.
E_RST
97
I/O
1, 4
Emulator reset. This pin has an internal pull-up resistor.
TEST
93
I
7
For Teridian internal use. Must be connected to GNDD via a 10kΩ resistor.
Pin types: P = Power, O = Output, I = Input, I/O = Input/Output
The circuit number denotes the equivalent circuit, as specified under “I/O Equivalent Circuits”.