PIC16F84A-04-P Datasheet, PDF (78/90 Pages) Microchip Technology – 18-pin Enhanced FLASH/EEPROM 8-Bit Microcontroller

PIC16F84A
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
(-40C to +85C)
2.0V - 6.0V
(-40C to +85C)
2.0V - 6.0V
(-40C to +85C)
2.0V - 5.5V
(-40C to +125C)
Maximum Operating Fre- 10 MHz
quency
10 MHz
10 MHz
20 MHz
Supply Current (IDD). IDD (typ) = 60 A
See parameter # D014 in IDD (max) = 400 A
the electrical specs for (LP osc, FOSC = 32 kHz,
more detail.
VDD = 2.0V,
WDT disabled)
IDD (typ) = 15 A
IDD (typ) = 15 A
IDD (typ) = 15 A
IDD (max) = 45 A
IDD (max) = 45 A
IDD (max) = 45 A
(LP osc, FOSC = 32 kHz, (LP osc, FOSC = 32 kHz, (LP osc, FOSC = 32 kHz,
VDD = 2.0V,
VDD = 2.0V,
VDD = 2.0V,
WDT disabled)
WDT disabled)
WDT disabled)
Power-down Current IPD (typ) = 26 A
(IPD). See parameters # IPD (max) = 100 A
D020, D021, and D021A (VDD = 2.0V,
in the electrical specs for WDT disabled, industrial)
more detail.
IPD (typ) = 0.4 A
IPD (typ) = 0.4 A
IPD (typ) = 0.4 A
IPD (max) = 9 A
IPD (max) = 6 A
IPD (max) = 1 A
(VDD = 2.0V,
(VDD = 2.0V,
(VDD = 2.0V,
WDT disabled, industrial) WDT disabled, industrial) WDT disabled, industrial)
Input Low Voltage (VIL). VIL (max) = 0.2VDD
See parameters # D032 (OSC1, RC mode)
and D034 in the electrical
specs for more detail.
VIL (max) = 0.1VDD
(OSC1, RC mode)
VIL (max) = 0.1VDD
(OSC1, RC mode)
VIL (max) = 0.1VDD
(OSC1, RC mode)
Input High Voltage (VIH). VIH (min) = 0.36VDD
See parameter # D040 in (I/O Ports with TTL,
the electrical specs for 4.5V  VDD  5.5V)
more detail.
VIH (min) = 2.4V
(I/O Ports with TTL,
4.5V  VDD  5.5V)
VIH (min) = 2.4V
(I/O Ports with TTL,
4.5V  VDD  5.5V)
VIH (min) = 2.4V
(I/O Ports with TTL,
4.5V  VDD  5.5V)
Data EEPROM Memory TDEW (typ) = 10 ms
Erase/Write cycle time TDEW (max) = 20 ms
(TDEW). See parameter #
D122 in the electrical
specs for more detail.
TDEW (typ) = 10 ms
TDEW (max) = 20 ms
TDEW (typ) = 10 ms
TDEW (max) = 20 ms
TDEW (typ) = 4 ms
TDEW (max) = 8 ms
Port Output Rise/Fall TioR, TioF (max) = 25 ns
time (TioR, TioF). See (C84)
parameters #20, 20A, TioR, TioF (max) = 60 ns
21, and 21A in the elec- (LC84)
trical specs for more
detail.
TioR, TioF (max) = 35 ns TioR, TioF (max) = 35 ns TioR, TioF (max) = 35 ns
(C84)
(C84)
(C84)
TioR, TioF (max) = 70 ns TioR, TioF (max) = 70 ns TioR, TioF (max) = 70 ns
(LC84)
(LC84)
(LC84)
MCLR on-chip filter. See No
parameter #30 in the
electrical specs for more
detail.
Yes
Yes
Yes
PORTA and crystal oscil- For crystal oscillator con- N/A
N/A
N/A
lator values less than figurations operating
500 kHz
below 500 kHz, the device
may generate a spurious
internal Q-clock when
PORTA<0> switches
state.
RB0/INT pin
TTL
TTL/ST*
(*Schmitt Trigger)
TTL/ST*
(*Schmitt Trigger)
TTL/ST*
(*Schmitt Trigger)
DS35007C-page 78
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