PIC16F877 datasheet(18/22 Pages) MICROCHIP

18 / 22 page

PIC16F87X

DS39025F-page 18

 2002 Microchip Technology Inc.

6.0

PROGRAM/VERIFY MODE ELECTRICAL CHARACTERISTICS

TABLE 6-1:

TIMING REQUIREMENTS FOR PROGRAM/VERIFY MODE

AC/DC CHARACTERISTICS

Standard Operating Conditions (unless otherwise stated)

Operating Temperature:

0°C

≤ TA ≤ +70°C

Operating Voltage:

2.2V

≤ VDD ≤ 5.5V

Characteristics

Sym

Min

Typ

Max

Units

Conditions/Comments

General

VDD level for Algorithm 1

VDD

2.2

5.5

Limited command set

(See Table 2-2)

VDD level for Algorithm 2

VDD

4.5

5.5

All commands available

High voltage on MCLR for

high voltage programming entry

VIHH

VDD + 3.5

13.5

Voltage on MCLR for

low voltage ICSP programming entry

VIH

2.2

5.5

MCLR rise time (VSS to VHH) for Test

mode entry

tVHHR

1.0

µs

(RB6, RB7) input high level

VIH1

0.8 VDD

Schmitt Trigger input

(RB6, RB7) input low level

VIL1

0.2 VDD

Schmitt Trigger input

RB<7:6> setup time before MCLR

↑

tset0

100

RB<7:6> hold time after MCLR

↑

thld0

µs

RB3 setup time before MCLR

↑

tset2

100

Serial Program/Verify

Data in setup time before clock

↓

tset1

100

Data in hold time after clock

↓

thld1

100

Data input not driven to next clock input

(delay required between command/data or

command/command)

tdly1

1.0

µs

Delay between clock

↓ to clock ↑ of next

command or data

tdly2

1.0

µs

Clock

↑ to data out valid (during read data)

tdly3

Erase cycle time

tera

Programming cycle time

tprog

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