PIC18LF4220-I View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18LF4220-I

28/40/44-Pin High-Performance, Enhanced Flash Microcontrollers with 10-Bit A/D and nanoWatt Technology

Microchip Technology 

PIC18F2220/2320/4220/4320

FIGURE 10-12: BLOCK DIAGRAM OF RD4:RD0 PINS

PORTD/CCP1 Select

PSPMODE

RD LATD

Data Bus

WR LATD

or PORTD

D

Q

CK Q

Data Latch

DQ

WR TRISD

CK Q

0

TRIS Latch

PSP Read

1

RD TRISD

Q

D

RD PORTD

0

ENEN

PSP Write

1

Note 1: I/O pins have diode protection to VDD and VSS.

VDD

P

N

VSS

TTL Buffer

1

I/O pin(1)

0

Schmitt Trigger

Input Buffer

TABLE 10-7: PORTD FUNCTIONS

Name

Bit# Buffer Type

Function

RD0/PSP0

bit 0

RD1/PSP1

bit 1

RD2/PSP2

bit 2

RD3/PSP3

bit 3

RD4/PSP4

bit 4

RD5/PSP5/P1B bit 5

RD6/PSP6/P1C bit 6

RD7/PSP7/P1D bit 7

ST/TTL(1)

ST/TTL(1)

ST/TTL(1)

ST/TTL(1)

ST/TTL(1)

ST/TTL(1)

ST/TTL(1)

ST/TTL(1)

Input/output port pin or Parallel Slave Port bit 0.

Input/output port pin or Parallel Slave Port bit 1.

Input/output port pin or Parallel Slave Port bit 2.

Input/output port pin or Parallel Slave Port bit 3.

Input/output port pin or Parallel Slave Port bit 4.

Input/output port pin, Parallel Slave Port bit 5 or enhanced PWM output P1B.

Input/output port pin, Parallel Slave Port bit 6 or enhanced PWM output P1C.

Input/output port pin, Parallel Slave Port bit 7 or enhanced PWM output P1D.

Legend: ST = Schmitt Trigger input, TTL = TTL input

Note 1: Input buffers are Schmitt Triggers when in I/O mode and TTL buffers when in Parallel Slave Port mode.

TABLE 10-8: SUMMARY OF REGISTERS ASSOCIATED WITH PORTD

Name

Bit 7

Bit 6

Bit 5

Bit 4

Bit 3

Bit 2

Bit 1

Bit 0

Value on

POR, BOR

PORTD

RD7

RD6

RD5

RD4

RD3

RD2

RD1

RD0 xxxx xxxx

LATD

LATD Data Latch Register

xxxx xxxx

TRISD

PORTD Data Direction Register

1111 1111

TRISE

IBF

OBF IBOV PSPMODE — PORTE Data Direction bits

0000 -111

CCP1CON P1M1 P1M0 DC1B1 DC1B0 CCP1M3 CCP1M2 CCP1M1 CCP1M0 0000 0000

Legend: x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by PORTD.

Value on

all other

Resets

uuuu uuuu

uuuu uuuu

1111 1111

0000 -111

0000 0000

DS39599C-page 110

 2003 Microchip Technology Inc.

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