RM46L852 Datasheet, PDF (40/172 Pages) Texas Instruments – 16/32-Bit RISC Flash Microcontroller

RM46L852
SPNS185 – SEPTEMBER 2012
2.3.2.16 System Module Interface
nPORRST
Table 2-43. ZWT System Module Interface
Terminal
Signal Name
337
ZWT
W7
Signal Default
Type Pull State
Pull Type
Input Pull Down 100uA
nRST
B17 I/O
Pull Up 100uA
nERROR
B14 I/O Pull Down 20uA
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Description
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.
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.
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
OSCIN
Terminal
Signal Name
KELVIN_GND
OSCOUT
ECLK
GIOA[5]/EXTCLKIN/EPWM1A/N2HET1_PIN_nDIS
EXTCLKIN2
VCCPLL
337
ZWT
K1
L2
L1
A12
B5
R9
P11
Signal Default
Type Pull State
Pull Type
Input
-
-
Input
Output
I/O
Input
Input
1.2V
Power
Pull Down
Pull Down
Programmable,
20uA
20uA
-
Description
From external
crystal/resonator, or
external clock input
Kelvin ground for oscillator
To external
crystal/resonator
External prescaled clock
output, or GIO.
External clock input #1
External clock input #2
Dedicated core supply for
PLL's
40
Device Package and Terminal Functions
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