PIC18F6490

更新时间： 2024-11-07 21:54:11

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PIC18F6390/6490/8390/8490 Rev.B3 SILICON ERRATA

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PIC18F6490 数据手册

PIC18F6390/6490/8390/8490

PIC18F6390/6490/8390/8490 Rev. B3 Silicon Errata

The PIC18F6390/6490/8390/8490 Rev. B3 parts you

have received conform functionally to the Device Data

Sheet (DS39629), except for the anomalies described

below. Any Data Sheet Clarification issues related to

the PIC18F6390/6490/8390/8490 will be reported in a

separate Data Sheet errata. Please check the

Microchip web site for any existing issues.

1. Module: MSSP

In its current implementation, the I²C™ Master

mode operates as follows:

a) The Baud Rate Generator for I²C in Master

mode is slower than the rates specified in

Table 15-3 of the Device Data Sheet.

All of the issues listed here will be addressed in future

revisions of the PIC18F6390/6490/8390/8490 silicon.

For this revision of silicon, use the values

shown in Table 1 in place of those shown in

Table 15-3 of the Device Data Sheet. The

differences are shown in bold text.

The following silicon errata apply only to

PIC18F6390/6490/8390/8490 devices with these

Device/Revision IDs:

b) Use the following formula in place of the one

shown in Register 15-4 (SSPCON1) of the

Device Data Sheet for bit description

SSPM3:SSPM0 = 1000.

Part Number

Device ID

Revision ID

PIC18F6390

PIC18F6490

PIC18F8390

PIC18F8490

00 1011 101

00 0110 101

00 1101 100

00 0110 100

00011

SSPADD = INT((FCY/FSCL) – (FCY/1.111 MHz)) –1

Date Codes that pertain to this issue:

All engineering and production devices.

The Device IDs (DEVID1 and DEVID2) are located at

addresses 3FFFFEh:3FFFFFh in the device’s

configuration space. They are shown in hexadecimal

in the format “DEVID2 DEVID1”.

TABLE 1:

I²C™ CLOCK RATE w/BRG

FSCL

BRG Value

FOSC

FCY

FCY * 2

(2 Rollovers of BRG)

40 MHz

16 MHz

4 MHz

10 MHz

4 MHz

1 MHz

20 MHz

8 MHz

2 MHz

0Eh

15h

59h

05h

08h

23h

01h

08h

00h

400 kHz⁽¹⁾

312.5 kHz

100 kHz

400 kHz⁽¹⁾

308 kHz

100 kHz

333 kHz⁽¹⁾

4 MHz

100 kHz

1 MHz⁽¹⁾

4 MHz

Note 1: The I²C™ interface does not conform to the 400 kHz I²C specification (which applies to rates greater than

100 kHz) in all details, but may be used with care where higher rates are required by the application.

DS80207B-page 1

12 3 4 5 6 7...10

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