PIC16C84-04I/SO Microchip Technology, PIC16C84-04I/SO Datasheet - Page 99

• Manufacturer Part Number: PIC16C84-04I/SO
• Description: IC MIC CTL EEPM 1K 4MHZ IT18SOIC
• Manufacturer: Microchip Technology
• Series: PIC® 16Cr

Specifications of PIC16C84-04I/SO

• Core Processor: PIC
• Core Size: 8-Bit
• Speed: 4MHz
• Peripherals: POR, WDT
• Number Of I /o: 13
• Program Memory Size: 1.75KB (1K x 14)
• Program Memory Type: EEPROM
• Eeprom Size: 64 x 8
• Ram Size: 36 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 18-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Request inventory verification / Request inventory verification
• Data Converters: -
• Connectivity: -

APPENDIX A: FEATURE
The following is the list of feature improvements over
the PIC16C5X microcontroller family:
1.
2.
3.
4.
5.
6.
7.
8.
9.
14. FSR is a full 8-bit register.
15. "In system programming" is made possible. The
10. Wake up from SLEEP through interrupt is
11. Two separate timers, the Oscillator Start-up
12. PORTB has weak pull-ups and interrupt on
13. T0CKI pin is also a port pin (RA4/T0CKI).
1997 Microchip Technology Inc.
Instruction word length is increased to 14 bits.
This allows larger page sizes both in program
memory (2K now as opposed to 512 before) and
the register file (128 bytes now versus 32 bytes
before).
A PC latch register (PCLATH) is added to handle
program memory paging. PA2, PA1 and PA0 bits
are removed from the status register and placed
in the option register.
Data memory paging is redefined slightly. The
STATUS register is modified.
Four new instructions have been added:
RETURN, RETFIE, ADDLW, and SUBLW. Two
instructions, TRIS and OPTION, are being
phased out although they are kept for
compatibility with PIC16C5X.
OPTION
addressable.
Interrupt capability is added. Interrupt vector is
at 0004h.
Stack size is increased to 8 deep.
Reset vector is changed to 0000h.
Reset of all registers is revisited. Five different
reset (and wake-up) types are recognized.
Registers are reset differently.
added.
Timer (OST) and Power-up Timer (PWRT), are
included for more reliable power-up. These
timers
unnecessary delays on power-up and wake-up.
change features.
user can program PIC16CXX devices using only
five pins: V
(data in/out).
are
and TRIS
DD
, V
invoked
IMPROVEMENTS -
FROM PIC16C5X TO
PIC16C84
SS
, V
PP
, RB6 (clock) and RB7
selectively
registers
are
to
made
avoid
APPENDIX B: CODE COMPATIBILITY
To convert code written for PIC16C5X to PIC16C84,
the user should take the following steps:
1.
2.
3.
4.
5.
Remove any program memory page select
operations (PA2, PA1, PA0 bits) for CALL, GOTO.
Revisit any computed jump operations (write to
PC or add to PC, etc.) to make sure page bits
are set properly under the new scheme.
Eliminate any data memory page switching.
Redefine data variables for reallocation.
Verify all writes to STATUS, OPTION, and FSR
registers since these have changed.
Change reset vector to 0000h.
- FROM PIC16C5X TO
PIC16C84
PIC16C84
DS30445C-page 99