Rainbow Electronics 71M6542G - Manual (Page 160)

160 © 2008–2011 Teridian Semiconductor Corporation v1.1
Pin
(64-pin)
Pin
(100-pin)
Name Type Circuit Function
39 59 ICE_E I 2
ICE Enable. When zero, E_RST, E_TCLK, and E_RXTX
become SEG50, SEG49, and SEG48 respectively. For
production units, this pin should be pulled to GND to disable
the emulator port.
60 92 TMUXOUT/SEG47
O 4, 5
Multiple-Use Pins. Configurable as either multiplexer/clock
output or LCD segment driver using the I/O RAM registers.
61 93 TMUX2OUT/SEG46
59 91 RESET I 2
Chip Reset. This input pin is used to reset the chip into a
known state. For normal operation, this pin is pulled low. To
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.
35 55 RX I 3
UART0 Input. If this pin is unused it must be terminated
to V3P3D or GNDD.
34 54 TX O 4 UART0 Output
51 81 TEST I 7
Enables Production Test. This pin must be grounded in
normal operation.
58 90 PB I 3
Pushbutton Input. This pin must be at GNDD when not active
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.
--
26, 40,
48, 49,
50, 63,
64, 65,
66, 73,
74, 77,
78, 79,
84
NC N/C — No Connection. Do not connect this pin.