MCP16502 datasheet(39/86 Pages) MICROCHIP

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DS20006275D-page 39

MCP16502

SYS-TMG: SYSTEM TIMING SETTINGS (0x02)

R/W-0

R/W-1

R/W-0

R/W-1

r-0

R/W-1

R/W-0

PBTO[1:0]

PBINTTO[1:0]

—

RSTDLY[2:0]

bit 7

bit 0

Legend:

r = Reserved bit

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-6

PBTO[1:0]: Push Button Time-out bits

Push button nSTRT time-out delay programming bits, default is ‘01’ (4 seconds).

bit 5-4

PBINTTO[1:0]: Push Button Interrupt Assertion Time-out Delay bits

Push button interrupt assertion time-out delay programming bits, default is ‘01’ (0.5 second).

bit 3

Reserved: Maintain as ‘0’

bit 2-0

RSTDLY[2:0]: nRSTO Deassertion Delay Programming bits

nRSTO deassertion delay programming bits (t4 in the start-up sequence), default is ‘100’ (16 ms).

SYS-CFG: SYSTEM CONFIGURATION (0x03)

R/W-1

R/W-0

TSDMSK

TWRMSK

HPMPEN

AWKPDIS

FSD[1:0]

B1HCEN

USER

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

TSDMSK: Thermal Shutdown Masking bit

If this bit is ‘1’, it will prevent nINTO from being asserted low upon TSD = 1. Default is ‘1’ (Thermal

Shutdown (TSD) will not be flagged by nINTO).

bit 6

TWRMSK: Thermal Warning Masking bit

If this bit is ‘1’, it will prevent nINTO from being asserted low upon a Thermal Warning event. Default

is ‘1’ (Thermal Warning will not be flagged by nINTO).

bit 5

HPMPEN: High-Performance Mode Enable Pin bit

This bit must be set to ‘1’ through an I2C command in order to enable the HPM pin. If the bit is ‘0’,

setting the HPM pin high will have no effect on the power status state machine.

bit 4

AWKPDIS: Automatic Wake-up Pulse Disable bit

If this bit is set to ‘1’, it disables the generation of a wake-up pulse on pin nSTRTO before an automatic

start-up sequence after a Fault (Thermal Shutdown or hiccup with HCPEN = 0) occurred in Hibernate

mode.

bit 3-2

FSD[1:0]: Switching (Oscillator) Frequency Displacement bits

Default is ‘00’ (no displacement).

bit 1

B1HCEN: Buck1 Hysteretic Control Mode Enable bit

When set, this bit enables the Hysteretic Control mode for Buck1 in Auto-PFM operation.

bit 0

USER: User-Accessible bit

This bit an be used to store system information. It is volatile and is cleared with SVIN UVLO.

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