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1996 Microchip Technology Inc.
DS30412C-page 149
PIC17C4X
Applicable Devices 42 R42 42A 43 R43 44
17.1
DC CHARACTERISTICS:
PIC17C42-16 (Commercial, Industrial)
PIC17C42-25 (Commercial, Industrial)
DC CHARACTERISTICS
Standard Operating Conditions (unless otherwise stated)
Operating temperature
-40C
≤ TA ≤ +85C for industrial and
0C
≤ TA ≤ +70C for commercial
Parameter
No.
Sym
Characteristic
Min
Typ
Max
Units
Conditions
D001
VDD
Supply Voltage
4.5
–
5.5
V
D002
VDR
RAM Data Retention
Voltage (Note 1)
1.5 *
–
V
Device in SLEEP mode
D003
VPOR
VDD start voltage to
ensure internal
Power-on Reset signal
–VSS
–
V
See section on Power-on Reset for
details
D004
SVDD
VDD rise rate to
ensure internal
Power-on Reset signal
0.060*
–
mV/ms See section on Power-on Reset for
details
D010
D011
D012
D013
D014
IDD
Supply Current
(Note 2)
–
3
6
11
19
95
6
12 *
24 *
38
150
mA
A
FOSC = 4 MHz (Note 4)
FOSC = 8 MHz
FOSC = 16 MHz
FOSC = 25 MHz
FOSC = 32 kHz
WDT enabled (EC osc conguration)
D020
D021
IPD
Power-down Current
(Note 3)
–
10
< 1
40
5
A
VDD = 5.5V, WDT enabled
VDD = 5.5V, WDT disabled
*
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 VDD 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 IDD measurements in active operation mode are:
OSC1 = external square wave, from rail to rail; all I/O pins tristated, pulled to VDD or VSS, T0CKI = VDD,
MCLR = VDD; WDT enabled/disabled as specied.
Current consumed from the oscillator and I/O’s driving external capacitive or resistive loads need to be con-
sidered.
For the RC oscillator, the current through the external pull-up resistor (R) can be estimated as: VDD / (2
R).
For capacitive loads, The current can be estimated (for an individual I/O pin) as (CL
VDD) f
CL = Total capacitive load on the I/O pin; f = average frequency on the I/O pin switches.
The capacitive currents are most signicant when the device is congured 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, all I/O pins in hi-impedance state and tied to VDD or VSS.
4: For RC osc conguration, current through Rext is not included. The current through the resistor can be esti-
mated by the formula IR = VDD/2Rext (mA) with Rext in kOhm.
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