MEC1632 datasheet(16/636 Pages) MICROCHIP

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MEC1632

DS00001592B-page 16

 2012-2018 Microchip Technology Inc.

3.4.2

ALTERNATE FUNCTION PIN STATE THROUGH POWER TRANSITIONS

The power state and power state transitions illustrated in Table 3-3 are defined in Section 7.0, "Power, Clocks, and

Resets". Pin behavior in this table assumes that the EC programs alternate function pin state (see Section 3.6, "Pin

Multiplexing," on page 30).

TABLE 3-3:

Alternate Function Pin State Through Power Transitions

Signal

VBAT

applied

VBAT

STABLE

VTR

applied

nSYS

_RST de-

asserted

Note E

VCC_

PWRGD

asserted

VCC_

PWRGD

de-

asserted

nSYS_

RST

asserted

VTR un-

powered

VBAT un-

powered

Notes

nSMI

N/A

1>OD(P)>1

OD(1)

glitch

N/A

KBRST

N/A

1>OD(P)>1

ZZ>In

glitch

N/A

Note F

A20M

N/A

1>OD(P)>1

glitch

N/A

Note F

LPCPD#

N/A

glitch

N/A

Note F

Legend

Notes

Note E:

Z = Tristate

Note F:

(P) = I/O state is driven by protocol while

power is applied.

OD = Open Drain Output Undriven (1)

or driven (0)

Transition occurs due to EC selecting alternate function.

Pin is programmable by the EC and retains its value through a VTR power cycle.

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