PIC18F8520-IPT301 View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

PIC18F8520-IPT301

64/80-Pin High-Performance, 256 Kbit to 1 MbitEnhanced Flash Microcontrollers with A/D

Microchip Technology 

PIC18F6520/8520/6620/8620/6720/8720

TABLE 26-10: PROGRAM MEMORY WRITE TIMING REQUIREMENTS

Param

No.

Symbol

Characteristics

Min

Typ

150

151

153

154

156

157

157A

166

171

171A

TADV2ALL Address Out Valid to ALE (address setup time) 0.25 TCY – 10 —

TALL2ADL ALE  to Address Out Invalid (address hold time)

5

—

TWRH2ADL WRn  to Data Out Invalid (data hold time)

5

—

TWRL

WRn Pulse Width

0.5 TCY – 5 0.5 TCY

TADV2WRH Data Valid before WRn (data setup time)

0.5 TCY – 10 —

TBSV2WRL Byte Select Valid before WRn (byte select setup

0.25 TCY

—

time)

TWRH2BSI WRn  to Byte Select Invalid (byte select hold time) 0.125 TCY – 5 —

TALH2ALH ALE  to ALE  (cycle time)

—

TCY

TALH2CSL Chip Enable Active to ALE 

—

—

TUBL2OEH AD Valid to Chip Enable Active

0.25 TCY – 20 —

Max

—

—

—

—

—

—

—

—

10

—

Units

ns

ns

ns

ns

ns

ns

ns

ns

ns

ns

FIGURE 26-11:

RESET, WATCHDOG TIMER, OSCILLATOR START-UP TIMER AND

POWER-UP TIMER TIMING

VDD

MCLR

Internal

POR

PWRT

Time-out

OSC

Time-out

Internal

Reset

Watchdog

Timer

Reset

33

32

I/O Pins

Note: Refer to Figure 26-6 for load conditions.

30

31

34

34

DS39609C-page 324

 2003-2013 Microchip Technology Inc.

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