PIC16C84 Datasheet, PDF (1/14 Pages) Microchip Technology – EEPROM Memory Programming Specification

PIC16C84
EEPROM Memory Programming Specification
This document includes the programming
specifications for the following devices:
• PIC16C84
1.0 PROGRAMMING THE PIC16C84
The PIC16C84 is programmed using the serial method.
The serial mode will allow the PIC16C84 to be pro-
grammed while in the users system. This allows for
increased design flexibility.
1.1 Hardware Requirements
The PIC16C84 requires one programmable power sup-
ply for VDD (4.5V to 5.5V) and a VPP of 12V to 14V. Both
supplies should have a minimum resolution of 0.25V.
1.2 Programming Mode
The programming mode for the PIC16C84 allows pro-
gramming of user program memory, data memory, spe-
cial locations used for ID, and the configuration word.
Pin Diagram
PDIP, SOIC
RA2
•1
RA3
2
RA4/T0CKI
3
MCLR
4
VSS
5
RB0/INT
6
RB1
7
RB2
8
RB3
9
18
RA1
17
RA0
16
OSC1/CLKIN
15
OSC2/CLKOUT
14
VDD
13
RB7
12
RB6
11
RB5
10
RB4
PIN DESCRIPTIONS (DURING PROGRAMMING): PIC16C84
During Programming
Pin Name
Pin Name
Pin Type
Pin Description
RB6
CLOCK
I
Clock input
RB7
DATA
I/O
Data input/output
MCLR
VTEST MODE
P*
Program Mode Select
VDD
VDD
P
Power Supply
VSS
VSS
P
Ground
Legend: I =Input, O = Output, P = Power
*In PIC16C84, programming high voltage is internally generated. To activate the programming mode, high voltage needs to be applied
to MCLR input. This means that MCLR does not draw any significant current.
© 1996 Microchip Technology Inc.
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