© 2005 Microchip Technology Inc.

DS80172C-page 5

PIC18F8720/8620/6720/6620

2.

Module: Timing Diagrams and

Specifications

Table 26-6: External Clock Timing Requirements

for PIC18FX620/X720 devices (page 322) has

been revised (changes and additions are shown in

bold text).

TABLE 26-6:

EXTERNAL CLOCK TIMING REQUIREMENTS

3.

Module: CCP

In Section 23.3.1 “Wake-up From Sleep”, the list

of peripheral interrupts which can wake the device

from Sleep has been updated. From the list of

11 events, item 4 has been clarified and item 5 has

been removed. The list now reads as follows:

1. PSP read or write.

2. TMR1 interrupt. Timer1 must be operating as

an asynchronous counter.

3. TMR3 interrupt. Timer3 must be operating as

an asynchronous counter.

4. CCP Capture mode interrupt (Capture will not

occur).

5. MSSP (Start/Stop) bit detect interrupt.

6. MSSP transmit or receive in Slave mode

7. USART RX or TX (Synchronous Slave mode).

8. A/D conversion (when A/D clock source is RC).

9. EEPROM write operation complete.

10. LVD interrupt.

Param

No.

Symbol

Characteristic

Min

Max

Units

Conditions

1A

DC

25

MHz

EC, ECIO oscillator,

PIC18FX620/X720 (Industrial)

DC

16

MHz

EC, ECIO oscillator,

PIC18FX620/X720 (Extended)

DC

4

MHz

RC oscillator

0.1

4

MHz

XT oscillator

4

25

MHz

HS oscillator (Industrial)

4

16

MHz

HS oscillator (Extended)

4

6.25

MHz

HS + PLL oscillator,

PIC18FX620/X720 (Industrial)

4

4

MHz

HS + PLL oscillator,

PIC18FX620/X720 (Extended)

5

33

kHz

LP Oscillator mode

40

—

ns

EC, ECIO oscillator,

PIC18FX620/X720 (Industrial)

62.5

—

ns

EC, ECIO oscillator,

PIC18FX620/X720 (Extended)

250

—

ns

RC oscillator

250

10,000

ns

XT oscillator

40

62.5

160

250

30

250

250

250

250

200

ns

ns

ns

ns

μs

HS oscillator (Industrial)

HS oscillator (Extended)

HS + PLL oscillator,

PIC18FX620/X720 (Industrial)

HS + PLL oscillator,

PIC18FX620/X720 (Extended)

LP Oscillator mode

Note

1:

specified values are based on characterization data for that particular oscillator type under standard operating conditions

with the device executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or

higher than expected current consumption. All devices are tested to operate at “min.” values with an external clock applied

to the OSC1/CLKI pin. When an external clock input is used, the “max.” cycle time limit is “DC” (no clock) for all devices.