TA100 datasheet(13/28 Pages) MICROCHIP

13 / 28 page

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Parameters

Symbol

Min. Typ. Max. Units Type(4)

Idle Tmer

tIDLE(2)

0.85

1.15

Rate at which the Nonvolatile Portion of Monotonic Counter

Increments

tMONOTONIC

Noise Suppression on RESET Input Pin

tRESET_NOISE(3)

—

0.150

µs

Minimum Allowed Reset Pulse

tRESET_MIN(3)

1.0

—

µs

GPIO_3 Transition Ignored, Measured Starting with the Last

Bit of Power (Sleep)

tSLEEP_WAKE

—

250

µs

Low-Pulse Width for GPIO_3 High to Wake TA100

tWAKE_GPIO_LOW 40

—

µs

Watchdog Time-out Value

tWATCHDOG

900 1000 1100

Notes:

Various situations can cause the power-up delays to exceed these parameters as follows:

– If the power-on or the wake self-test functions are enabled in the configuration area, the execution of

those self-test operations will increase the delay.

– If an internal failure occurs to cause a boot event, then, there may be an additional delay during the boot

to write the internal failure log in the nonvolatile memory within the chip.

– If a device update is started but does not complete due to a power interruption, on the next power-up,

some cleanup may be required and may take additional time.

– If the 1 minute timer is enabled and is being updated in the nonvolatile memory concurrent with the

wake event, the device will accept an Input command after tPU_SLEEP/tPU_POWERON, but will not start the

execution of that command until the nonvolatile update is complete.

The idle timer specifications here assume that the idle timer is enabled and configured for 1 second. It is

recommended that these times be multiplied by the delay time value set in the idle timer configuration field if

that is not 1.

All noise pulses ≤ tRESET_NOISE are assured to be suppressed. All pulse widths ≥ tRESET_MIN are assured to

pass to the device. Pulses in between these values may or may not be suppressed.

Type Means: A = 100% Tested, B = Characterized.

6.3.2

I2C Interface Timing

Table 6-5. AC Characteristics of I2C Interface

Applicable over the recommended operating range from TA = -40°C to +125°C, VCC = +2.7V to +5.5V.

Parameters

Symbol

Fast-Mode Plus

Units

Min.

Max.

SCL Clock Frequency

fSCL

—

1000

kHz

SCL High Time

tHIGH

260

—

SCL Low Time

tLOW

500

—

Start Setup Time

tSU.STA

260

—

Start Hold Time

tHD.STA

260

—

Stop Setup Time

tSU.STO

260

—

Data in Setup Time

tSU.DAT

—

Data in Hold Time

tHD.DAT

—

Input Rise Time(1, 3)

—

120

TA100 (B5)

Electrical Characteristics

and its subsidiaries

Summary Datasheet

DS20006369C-page 13

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