PIC16F636-I Datasheet, PDF (190/234 Pages) Microchip Technology – 8/14-Pin, Flash-Based 8-Bit CMOS Microcontrollers with nanoWatt Technology

PIC12F635/PIC16F636/639
15.11 AC Characteristics: Analog Front-End for PIC16F639 (Industrial) (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
LC Signal Input
Sinusoidal 300 mVPP
Carrier Frequency
125 kHz
LCCOM connected to VSS
Param Sym.
No.
Characteristic
Min
Typ†
Max
Units
Conditions
AF14 TLFDATAR Rise time of LFDATA
—
0.5
—
μs VDD = 3.0V
Time is measured from 10% to 90% of
amplitude
AF15 TLFDATAF Fall time of LFDATA
—
0.5
—
μs VDD = 3.0V
Time is measured from 10% to 90% of
amplitude
AF16
TAGC AGC initialization time
—
3.5*
—
ms Time required for AGC stabilization
AF17 TPAGC High time after AGC settling time
—
62.5
—
μs Equivalent to two Internal clock cycle (FOSC)
AF18
TSTAB
AGC stabilization time plus high
time (after AGC settling time)
(TAGC + TPAGC)
4
—
—
ms AGC stabilization time
AF19
TGAP Gap time after AGC settling time
200
—
—
μs Typically 1 TE
AF20
TRDY Time from exiting Sleep or POR to
—
—
50*
ms
being ready to receive signal
AF21 TPRES Minimum time AGC level must be
5*
—
—
ms AGC level must not change more than 10%
held after receiving AGC Preserve
during TPRES.
command
AF22
FOSC Internal RC oscillator frequency
(±10%)
28.8
32
35.2
kHz Internal clock trimmed at 32 kHz during test
AF23 TINACT Inactivity timer time-out
14.4
16
17.6
ms 512 cycles of RC oscillator @ FOSC
AF24 TALARM Alarm timer time-out
28.8
32
35.2
ms 1024 cycles of RC oscillator @ FOSC
AF25
RLC LC Pin Input Impedance
LCX, LCY, LCZ
—
1*
—
MOhm Device in Standby mode
AF26
CIN LC Pin Input Capacitance
LCX, LCY, LCZ
LCCOM grounded. Vdd = 3.0V,
—
24
—
pF FCARRIER = 125 kHz
AF27
TE Time element of pulse
100
—
—
μs
AF28
TOEH Minimum output enable filter high
time
OEH (Bits Config0<7:6>)
01 = 1 ms
32 (~1ms) —
10 = 2 ms
64 (~2ms) —
11 = 4 ms
128 (~4ms) —
00 = Filter Disabled
—
—
RC oscillator = FOSC
Viewed from the pin input:
(Note 1)
—
clock
—
count
—
—
AF29
TOEL
Minimum output enable filter low
time
OEL (Bits Config0<5:4>)
00 = 1 ms
01 = 1 ms
10 = 2 ms
11 = 4 ms
32 (~1ms) —
32 (~1ms) —
64 (~2ms) —
128 (~4ms) —
RC oscillator = FOSC
Viewed from the pin input:
clock (Note 2)
—
count
—
—
—
*
†
Note 1:
2:
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.
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).
DS41232D-page 188
© 2007 Microchip Technology Inc.