PIC18F66K22-I/PTRSL View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F66K22-I/PTRSL

64/80-Pin, High-Performance, 1-Mbit Enhanced Flash Microcontrollers with 12-Bit A/D and nanoWatt XLP Technology

Microchip Technology 

PIC18F87K22 FAMILY

FIGURE 31-8:

PROGRAM MEMORY WRITE TIMING DIAGRAM

OSC1

A<19:16>

BA0

AD<15:0>

ALE

CE

WRH or

WRL

UB or

LB

Q1

Q2

Address

150

151

171

171A

157

Q3

Q4

Address

166

Data

153

156

154

Operating Conditions: 2.0V < VCC < 3.6V, -40°C < TA < +125°C unless otherwise stated.

Q1

157A

Q2

Address

Address

TABLE 31-12: PROGRAM MEMORY WRITE TIMING REQUIREMENTS

Param.

No

Symbol

Characteristics

Min

Typ Max Units

150 TadV2alL Address Out Valid to ALE (address setup time)

151 TalL2adl ALE  to Address Out Invalid (address hold time)

0.25 TCY – 10 —

5

—

—

ns

—

ns

153 TwrH2adl WRn  to Data Out Invalid (data hold time)

5

—

—

ns

154 TwrL

WRn Pulse Width

0.5 TCY – 5 0.5 TCY —

ns

156 TadV2wrH Data Valid before WRn (data setup time)

0.5 TCY – 10

—

—

ns

157 TbsV2wrL Byte Select Valid before WRn 

(byte select setup time)

0.25 TCY

—

—

ns

157A TwrH2bsI WRn  to Byte Select Invalid (byte select hold time) 0.125 TCY – 5 —

—

ns

166 TalH2alH ALE  to ALE  (cycle time)

—

TCY

—

ns

171 TalH2csL Chip Enable Active to ALE 

0.25 TCY – 20 —

—

ns

171A TubL2oeH AD Valid to Chip Enable Active

—

—

10

ns

DS39960D-page 508

 2011 Microchip Technology Inc.

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