RM46L852
SPNS185 –SEPTEMBER 2012
www.ti.com
2.3.2.16 System Module Interface
Table 2-43. ZWT System Module Interface
Terminal Signal Default Pull Type Description
Type Pull State
Signal Name 337
ZWT
nPORRST W7 Input Pull Down 100uA Power-on reset, cold reset
External power supply
monitor circuitry must
drive nPORRST low when
any of the supplies to the
microcontroller fall out of
thespecified range. This
terminal has a glitch filter.
See Section 4.8.
nRST B17 I/O Pull Up 100uA System reset, warm reset,
bidirectional.
The internal circuitry
indicates any reset
condition by driving nRST
low.
The external circuitry can
assert a system reset by
driving nRST low. To
ensure that an external
reset is not arbitrarily
generated, TI
recommends that an
external pull-up resistor is
connected to this terminal.
This terminal has a glitch
filter. See Section 4.8.
nERROR B14 I/O Pull Down 20uA ESM Error Signal
Indicates error of high
severity. See
Section 4.18.
2.3.2.17 Clock Inputs and Outputs
Table 2-44. ZWT Clock Inputs and Outputs
Terminal Signal Default Pull Type Description
Type Pull State
Signal Name 337
ZWT
OSCIN K1 Input - - From external
crystal/resonator, or
external clock input
KELVIN_GND L2 Input Kelvin ground for oscillator
OSCOUT L1 Output To external
crystal/resonator
ECLK A12 I/O Pull Down Programmable, External prescaled clock
20uA output, or GIO.
GIOA[5]/EXTCLKIN/EPWM1A/N2HET1_PIN_nDIS B5 Input Pull Down 20uA External clock input #1
EXTCLKIN2 R9 Input External clock input #2
VCCPLL P11 1.2V - Dedicated core supply for
Power PLL's
40 Device Package and Terminal Functions Copyright © 2012, Texas Instruments Incorporated
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