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PIC17C4X
DS30412B-page 178
1996 Microchip Technology Inc.
Applicable Devices
42 R42 42A 43 R43 44
19.2
DC CHARACTERISTICS:
PIC17LC42A/43/LC44 (Commercial, Industrial)
PIC17LCR42/43 (Commercial, Industrial)
DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating temperature
-40C
0C
≤
T
A
≤
+85C for industrial and
≤
T
A
≤
+70C for commercial
Parameter
No.
D001
D002
Sym
V
DD
V
DR
Characteristic
Supply Voltage
RAM Data Retention
Voltage (Note 1)
V
DD
start voltage to
ensure internal
Power-on Reset signal
V
DD
rise rate to
ensure internal
Power-on Reset signal
Supply Current
(Note 2)
Min
2.5
1.5 *
Typ
–
–
Max
6.0
–
Units
V
V
Conditions
Device in SLEEP mode
D003
V
POR
–
V
SS
–
V
See section on Power-on Reset for
details
D004
S
VDD
0.060 *
–
–
mV/ms See section on Power-on Reset for
details
D010
D011
D014
I
DD
–
–
–
3
6
95
6
12 *
150
mA
mA
μ
A
F
OSC
= 4 MHz (Note 4)
F
OSC
= 8 MHz
F
OSC
= 32 kHz,
WDT disabled (EC osc configuration)
V
DD
= 5.5V, WDT enabled
V
DD
= 5.5V, WDT disabled
D020
D021
*
I
PD
Power-down
Current (Note 3)
–
–
10
< 1
40
5
μ
A
μ
A
These parameters are characterized but not tested.
Data in "Typ" column is at 5V, 25C unless otherwise stated. These parameters are for design guidance only
and are not tested.
Note 1: This is the limit to which V
DD
can be lowered in SLEEP mode without losing RAM data.
2: The supply current is mainly a function of the operating voltage and frequency. Other factors such as I/O pin
loading and switching rate, oscillator type, internal code execution pattern, and temperature also have an
impact on the current consumption.
The test conditions for all I
DD
measurements in active operation mode are:
OSC1=external square wave, from rail to rail; all I/O pins tristated, pulled to V
DD
or V
SS
, T0CKI = V
DD
, MCLR
= V
DD
; WDT enabled/disabled as specified.
Current consumed from the oscillator and I/O’s driving external capacitive or resistive loads needs to be con-
sidered.
For the RC oscillator, the current through the external pull-up resistor (R) can be estimated as: V
DD
/ (2
R).
For capacitive loads, the current can be estimated (for an individual I/O pin) as (C
L
V
DD
)
f
C
L
= Total capacitive load on the I/O pin; f = average frequency the I/O pin switches.
The capacitive currents are most significant when the device is configured for external execution (includes
extended microcontroller mode).
3: The power down current in SLEEP mode does not depend on the oscillator type. Power-down current is
measured with the part in SLEEP mode, with all I/O pins in hi-impedance state and tied to V
DD
or V
SS
.
4: For RC osc configuration, current through Rext is not included. The current through the resistor can be esti-
mated by the formula I
R
= V
DD
/2Rext (mA) with Rext in kOhm.