Datasheet
PIC16F84A
DS35007C-page 78 2001-2013 Microchip Technology Inc.
APPENDIX B: CONVERSION CONSIDERATIONS
Considerations for converting from one PIC16X8X
device to another are listed in Table 1.
TABLE 1: CONVERSION CONSIDERATIONS - PIC16C84, PIC16F83/F84, PIC16CR83/CR84,
PIC16F84A
Difference PIC16C84 PIC16F83/F84
PIC16CR83/
CR84
PIC16F84A
Program Memory Size 1K x 14 512 x 14 / 1K x 14 512 x 14 / 1K x 14 1K x 14
Data Memory Size 36 x 8 36 x 8 / 68 x 8 36 x 8 / 68 x 8 68 x 8
Voltage Range 2.0V - 6.0V
(-40C to +85C)
2.0V - 6.0V
(-40C to +85C)
2.0V - 6.0V
(-40C to +85C)
2.0V - 5.5V
(-40C to +125C)
Maximum Operating Fre-
quency
10 MHz 10 MHz 10 MHz 20 MHz
Supply Current (I
DD).
See parameter # D014 in
the electrical specs for
more detail.
IDD (typ) = 60 A
I
DD (max) = 400 A
(LP osc, F
OSC = 32 kHz,
V
DD = 2.0V,
WDT disabled)
I
DD (typ) = 15 A
I
DD (max) = 45 A
(LP osc, F
OSC = 32 kHz,
V
DD = 2.0V,
WDT disabled)
I
DD (typ) = 15 A
I
DD (max) = 45 A
(LP osc, F
OSC = 32 kHz,
V
DD = 2.0V,
WDT disabled)
I
DD (typ) = 15 A
I
DD (max) = 45 A
(LP osc, F
OSC = 32 kHz,
V
DD = 2.0V,
WDT disabled)
Power-down Current
(I
PD). See parameters #
D020, D021, and D021A
in the electrical specs for
more detail.
I
PD (typ) = 26 A
I
PD (max) = 100 A
(V
DD = 2.0V,
WDT disabled, industrial)
I
PD (typ) = 0.4 A
I
PD (max) = 9 A
(V
DD = 2.0V,
WDT disabled, industrial)
I
PD (typ) = 0.4 A
I
PD (max) = 6 A
(V
DD = 2.0V,
WDT disabled, industrial)
I
PD (typ) = 0.4 A
I
PD (max) = 1 A
(V
DD = 2.0V,
WDT disabled, industrial)
Input Low Voltage (V
IL).
See parameters # D032
and D034 in the electrical
specs for more detail.
VIL (max) = 0.2VDD
(OSC1, RC mode)
V
IL (max) = 0.1VDD
(OSC1, RC mode)
V
IL (max) = 0.1VDD
(OSC1, RC mode)
V
IL (max) = 0.1VDD
(OSC1, RC mode)
Input High Voltage (V
IH).
See parameter # D040 in
the electrical specs for
more detail.
VIH (min) = 0.36VDD
(I/O Ports with TTL,
4.5V V
DD 5.5V)
V
IH (min) = 2.4V
(I/O Ports with TTL,
4.5V V
DD 5.5V)
V
IH (min) = 2.4V
(I/O Ports with TTL,
4.5V V
DD 5.5V)
V
IH (min) = 2.4V
(I/O Ports with TTL,
4.5V V
DD 5.5V)
Data EEPROM Memory
Erase/Write cycle time
(T
DEW). See parameter #
D122 in the electrical
specs for more detail.
T
DEW (typ) = 10 ms
T
DEW (max) = 20 ms
T
DEW (typ) = 10 ms
T
DEW (max) = 20 ms
T
DEW (typ) = 10 ms
T
DEW (max) = 20 ms
T
DEW (typ) = 4 ms
T
DEW (max) = 8 ms
Port Output Rise/Fall
time (TioR, TioF). See
parameters #20, 20A,
21, and 21A in the elec-
trical specs for more
detail.
TioR, TioF (max) = 25 ns
(C84)
TioR, TioF (max) = 60 ns
(LC84)
TioR, TioF (max) = 35 ns
(C84)
TioR, TioF (max) = 70 ns
(LC84)
TioR, TioF (max) = 35 ns
(C84)
TioR, TioF (max) = 70 ns
(LC84)
TioR, TioF (max) = 35 ns
(C84)
TioR, TioF (max) = 70 ns
(LC84)
MCLR
on-chip filter. See
parameter #30 in the
electrical specs for more
detail.
No Yes Yes Yes
PORTA and crystal oscil-
lator values less than
500 kHz
For crystal oscillator con-
figurations operating
below 500 kHz, the device
may generate a spurious
internal Q-clock when
PORTA<0> switches
state.
N/A N/A N/A
RB0/INT pin TTL TTL/ST*
(*Schmitt Trigger)
TTL/ST*
(*Schmitt Trigger)
TTL/ST*
(*Schmitt Trigger)