PIC12F635ESLASHSS datasheet(171/196 Pages) MICROCHIP

171 / 196 page

Preliminary

DS41232B-page 169

PIC12F635/PIC16F636/639

CTUNZ

LCZ Tuning Capacitor

—

44.1

—

81.9

VDD = 3.0V,

Config. Reg. 3, bits<6:1> Setting = 000000

63 pF +/- 30%

Config. Reg. 3, bits<6:1> Setting = 111111

63 steps, 1 pF/step

Monotonic increment in capacitor value from

setting = 000000 to 111111 by design

C_Q

Q of Trimming Capacitors

50*

—

Characterized at bench test

TDR

Demodulator Charge Time

(delay time of demodulated output

to rise)

—50

—

μsVDD = 3.0V

MOD depth setting = 50%

Input conditions:

Amplitude = 300 mVPP

Modulation depth = 80%

TDF

Demodulator Discharge Time

(delay time of demodulated output

to fall)

—50

—

μsVDD = 3.0V

MOD depth setting = 50%

Input conditions:

Amplitude = 300 mVPP

Modulation depth = 80%

TLFDATAR Rise time of LFDATA

—

0.5

—

μsVDD = 3.0V

Time is measured from 10% to 90% of

amplitude

TLFDATAF Fall time of LFDATA

—

0.5

—

μsVDD = 3.0V

Time is measured from 10% to 90% of

amplitude

TAGC

AGC stabilization time

—

3.5*

—

Time required for AGC stabilization

TPAGC

High time after AGC settling time

—

62.5

—

μs

Equivalent to two Internal clock cycle (FOSC)

TSTAB

AGC stabilization time plus high

time (after AGC settling time)

(TAGC +TPAGC)

—

AGC stabilization time

TGAP

Gap time after AGC settling time

200

—

μs

Typically 1 TE

TRDY

Time from exiting Sleep or POR to

being ready to receive signal

——

50*

TPRES

Minimum time AGC level must be

held after receiving AGC Preserve

command

—

AGC level must not change more than 10%

during TPRES.

FOSC

Internal RC oscillator frequency

(±10%)

28.8

35.2

kHz

Internal clock trimmed at 32 kHz during test

TINACT

Inactivity timer time-out

14.4

17.6

512 cycles of RC oscillator @ FOSC

TALARM

Alarm timer time-out

28.8

35.2

1024 cycles of RC oscillator @ FOSC

RLC

LC Pin Input Impedance

LCX, LCY, LCZ

—

MOhm

Device in Standby mode

15.11 AC Characteristics: Analog Front-End for PIC16F639 (industrial, extended) (Continued)

AC CHARACTERISTICS

Standard Operating Conditions (unless otherwise stated)

Supply Voltage

2.0V

≤ VDD ≤ 3.6V

Operating temperature

-40°C

≤ TAMB ≤ +85°C for industrial

-40°C

≤ TAMB ≤ +125°C for extended

LC Signal Input

Sinusoidal 300 mVPP

Carrier Frequency

125 kHz

LCCOM connected to VSS

Param

No.

Sym.

Characteristic

Min

Typ†

Max

Units

Conditions

Parameter is characterized but not tested.

†

Data in “Typ” column is at 3.0V, 25°C unless otherwise stated. These parameters are for design guidance only and are not tested.

Note 1:

Required output enable filter high time must account for input path analog delays = TOEH - TDR + TDF

Required output enable filter low time must account for input path analog delays (= TOEL + TDR - TDF)

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