71m6403 Teridian Semiconductor Corporation, 71m6403 Datasheet - Page 74

• Manufacturer Part Number: 71m6403
• Description: Electronic Trip Unit
• Manufacturer: Teridian Semiconductor Corporation

Digital Pins:
NAME
DIO_3,
DIO_2,
DIO_1,
DIO_0
COM3,
COM2,
COM1,
COM0
SEG0…SEG2,
SEG8…SEG23
SEG24/DIO4…
…….
SEG41/DIO21
SEG7/MUX_SYNC
SEG6/SRDY
SEG5/SFR
SEG4/SDATA
SEG3/SCLK
RESETZ
RX
TX
OPT_RX
OPT_TX
CK
TMUXOUT
E_RXTX
E_TBUS[3]
E_TBUS[2]
E_TBUS[1]
E_TBUS[0]
E_ISYNC/BRKRQ
E_TCLK
E_RST
TEST3
Page: 74 of 75
PIN #
pinout
pinout
See
See
100
11
10
21
20
19
18
25
24
23
22
37
35
74
71
89
12
13
14
15
29
97
93
6
5
3
8
4
2
TYPE
I/O
I/O
I/O
I/O
I/O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
DESCRIPTION
Digital input/output pins 0 through 3
LCD Common Outputs: These 4 pins provide the select signals for the LCD display.
Dedicated LCD segment outputs
Multi-use pins, configurable as either LCD SEG driver or DIO. (DIO4 = SCK, DIO5 =
SDA when configured as EEPROM interface, STROBE = DIO6, FAULT_PULSE =
DIO7 when configured as pulse outputs)
Multi-use-pin LCD Segment Output/ MUX_SYNC is output for Synchronous serial
interface
Multi-use-pin, LCD Segment Outputs/ SRDY input for Synchronous serial interface.
Multi-use-pin, LCD Segment Output/ SFR output for SSI.
Multi-use-pin, LCD Segment Output/ SDATA output for SSI.
Multi-use-pin, LCD Segment Output/ SCLK output for SSI.
Chip reset: 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 input
circuitry. The minimum width of the pulse is 5µs. A 0.1µF capacitor to GNDA should
be connected to this pin.
UART input. The voltage applied at this input must be below 3.6V.
UART output.
Optical Receive Input: This pin receives a signal from an external photo-detector
used in an IR serial interface.
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.
Clock input (19.6608 MHz)
Digital output test multiplexer. Controlled by DMUX[3:0].
Emulator serial data.
Emulator trace bus. These pins have internal pull-up resistors.
Emulator handshake. This pin has an internal pull-up resistor.
Emulator clock. This pin has an internal pull-up resistor.
Emulator reset. This pin has an internal pull-up resistor.
For TERIDIAN internal use. This pin must be connected to GNDD via a 1kΩ
resistor.
©
2006 TERIDIAN Semiconductor Corporation
Electronic Trip Unit
71M6403
SEPTEMBER 2006
REV 1.0