78M6613 Data Sheet
DS_6613_018
6.3 Digital Pins
Name
Type Circuit Description
DIO4
DIO5
DIO6
DIO7
DIO8
DIO14
DIO15
DIO16
DIO17
DIO19
DIO pins. If unused, these pins must be configured as DIOs and
set to outputs by the firmware.
I/O
3, 4
E_RXTX,
E_RST
I/O
O
1, 4
4
Emulator port pins (when ICE_E pulled high) .
E_TCLK
ICE enable. When zero, E_RST, E_TCLK, and E_RXTX are disabled.
For production units, this pin should be pulled to GND to disable the
emulator port. This pin should be brought out to the programming
interface in order to create a way for reprogramming parts that have
the SECURE bit set.
ICE_E
I
2
CKTEST
O
O
4
4
Clock PLL output.
TMUXOUT
Digital output test multiplexer.
This input pin resets the chip into a known state. For normal operation,
this pin should be pulled low. To force the device into reset state, it should be
pulled high. Refer to Section 3.6 for RESET pin connections, use, and
relevant external circuitry.
RESET
I
3
UART input. If unused, this pin must be terminated to V3P3 or
GND.
RX
I
3
TX
O
I
4
7
UART output.
TEST
Enables Production Test. Must be grounded in normal operation.
Pin types: P = Power, O = Output, I = Input, I/O = Input/Output
The circuit number denotes the equivalent circuit, as specified on the following page.
30
Rev. 1.1
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
