System Integration Unit (SIU)
MPC5565 Microcontroller Reference Manual, Rev. 1.0
6-4
Freescale Semiconductor
6.2
External Signal Description
lists the external pins used by the SIU.
6.2.1
Detailed Signal Descriptions
6.2.1.1
Reset Input (RESET)
RESET is an active-low input signal asserted by an external device during a power-on reset (POR) or
external reset. If RESET asserts for 10 clock cycles only, the internal reset signal asserts. Asserting the
RESET signal while the device is processing a reset restarts the reset process at the beginning.
RESET has a glitch detector to sense electrical fluctuations that drop below the switch point value of the
input buffer logic for the V
DDEH
inputs for more than two clock cycles.
Table 6-3. SIU Signal Properties
Name
Function
I/O
Type
Pad
Type
Pullup
Pulldown
1
1
Internal weak pullup/down. The reset weak pullup/down state is given by the pullup/down state for the primary signal function.
For example, the reset weak pullup/down state of the BOOTCFG[0:1]_GPIO[211:212] signal is weak pulldown enabled.
Resets
RESET
Reset input
Input
—
Up
RSTOUT
Reset output
Output
Slow
—
System Configuration
GPIO[0:210]
General-purpose I/O
I/O
Slow
Up/down
BOOTCFG[0:1]_
GPIO[211:212]
Boot configuration input
General-purpose I/O
Input
I/O
Slow
Down
Up/down
WKPCFG_
GPIO[213]
Weak-pull configuration
General-purpose I/O
Input
I/O
Slow
Up
Up/down
External Interrupt
IRQ[0:5, 7:15]
2
2
The GPIO and IRQ signals are multiplexed with other functions on the device.
External interrupt request input
Input
Slow
—
3
3
The weak pullup/down state at reset for the IRQ signals depends on the muxed signals that share the pin. The weak
pullup/down state for these pins is as follows:
IRQ[0, 1, 4, 5, 7, 12, 13, 14]:
Up
IRQ[2, 3, 15]:
Down
IRQ[8:11]: WKPCFG
Summary of Contents for MPC5565
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Page 34: ...MPC5565 Reference Manual Rev 1 0 Freescale Semiconductor 15...
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Page 553: ...Flash Memory MPC5565 Microcontroller Reference Manual Rev 1 0 13 38 Freescale Semiconductor...
Page 559: ...SRAM MPC5565 Microcontroller Reference Manual Rev 1 0 14 6 Freescale Semiconductor...
Page 973: ...Preface MPC5565 Microcontroller Reference Manual Rev 1 0 21 36 Freescale Semiconductor...
Page 1153: ...Calibration MPC5565 Microcontroller Reference Manual Rev 1 0 B 8 Freescale Semiconductor...