PIC16F914-E/SP View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC16F914-E/SP

28/40/44/64-Pin Flash-Based, 8-Bit CMOS Microcontrollers with LCD Driver and nanoWatt Technology

Microchip Technology 

PIC16F913/914/916/917/946

3.4.3.8 RB7/ICSPDAT/ICDDAT/SEG13

Figure 3-13 shows the diagram for this pin. The RB7

pin is configurable to function as one of the following:

• a general purpose I/O

• an In-Circuit Serial Programming™ I/O

• an ICD data I/O

• an analog output for the LCD

FIGURE 3-13:

BLOCK DIAGRAM OF RB7

PORT/Program Mode/ICD

ICSPDAT

RBPU

SE13 and LCDEN

Data Bus

WR PORTB

WR TRISB

PGD DRVEN

D

Q

CK

Data Latch

D

Q

CK

TRIS Latch

RD TRISB

1

0

0

1

SE13 and LCDEN

VDD

P

Weak

Pull-up

VDD

I/O Pin

VSS

TTL

Input Buffer

RD PORTB

D

Q

WR IOC

CK Q

QD

EN Q1

RD IOC

Interrupt-on- Q

Change

Set RBIF

S

From other

R

RB<7:4> pins

Write ‘0’ to RBIF

Program

Mode/ICD

QD

EN

RD PORTB

ICSPDAT/ICDDAT

Schmitt Trigger

Program Mode or ICD Mode or (SE13 and LCDEN)

SEG13

SE13 and LCDEN

DS41250F-page 60

© 2007 Microchip Technology Inc.

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