PIC16C50X Datasheet, PDF (1/14 Pages) Microchip Technology – EPROM Memory Programming Specification

PIC16C50X
EPROM Memory Programming Specification
This document includes the programming
specifications for the following devices:
• PIC16C505
1.0 PROGRAMMING THE
PIC16C50X
The PIC16C50X can be programmed using a serial
method. Due to this serial programming, the
PIC16C50X can be programmed while in the user’s
system, increasing design flexibility. This programming
specification applies to PIC16C50X devices in all
packages.
1.1 Hardware Requirements
The PIC16C50X requires two programmable power
supplies, one for VDD (2.0V to 6.5V recommended) and
one for VPP (12V to 14V). Both supplies should have a
minimum resolution of 0.25V.
1.2 Programming Mode
The Programming mode for the PIC16C50X allows
programming of user program memory, and the config-
uration word for the PIC16C50X.
Pin Diagram
PDIP, SOIC, Windowed CERDIP
VDD
1
RB5/OSC1/CLKIN
2
RB4/OSC2/CLKOUT
3
RB3/MCLR/VPP
4
RC5/T0CKI
5
RC4
6
RC3
7
14
VSS
13
RB0
12
RB1
11
RB2
10
RC0
9
RC1
8
RC2
TABLE 1-1: PIN DESCRIPTIONS (DURING PROGRAMMING): PIC16C50X
Pin Name
Pin Name
During Programming
Pin Type
Pin Description
RB1
CLOCK
I
Clock Input
RB0
DATA
I/O
Data Input/Output
RB3/MCLR/VPP
VPP
VDD
VDD
VSS
VSS
Legend: I = Input, O = Output, P = Power
P
Programming Power
P
Power Supply
P
Ground
 2001 Microchip Technology Inc.
DS30603B-page 1