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PIC18F4680-IPT

更新时间： 2024-11-08 12:36:07

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美国微芯 - MICROCHIP		/
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PIC18F2585/2680/4585/4680 Rev. A1 Silicon Errata

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PIC18F4680-IPT 数据手册

PIC18F2585/2680/4585/4680

PIC18F2585/2680/4585/4680 Rev. A1 Silicon Errata

The PIC18F2585/2680/4585/4680 Rev. A1 parts you

have received conform functionally to the Device Data

Sheet (DS39625C), except for the anomalies

described below. Any Data Sheet Clarification issues

related to the PIC18F2585/2680/4585/4680 will be

reported in a separate Data Sheet errata. Please check

the Microchip web site for any existing issues.

2. Module: ECCP

When a shutdown condition occurs, the output port

is made inactive for the duration of the event. After

the event that caused the shutdown ends, the

ECCP module immediately enables the PWM out-

put and does not wait until the beginning of the

next PWM cycle.

All of the issues listed here will be addressed in future

revisions of the PIC18F2585/2680/4585/4680 silicon.

Work around

Disable the auto-restart feature in software, poll

the Timer2 Interrupt Flag (TMR2IF) and do not

clear the ECCPASE bit until TMR2IF is set.

The following silicon errata apply only to

PIC18F2585/2680/4585/4680 devices with these

Device/Revision IDs:

Date Codes that pertain to this issue:

Part Number

Device ID

Revision ID

All engineering and production devices.

PIC18F2585

PIC18F2680

PIC18F4585

PIC18F4680

0001 1010 100

0001 1010 110

0001 1010 101

0001 1010 111

0 0010

3. Module: ECCP

ECCP1, configured for auto-shutdown with

Comparator 1, corrupts the PWM duty cycle pulse.

In addition, it does not consistently synchronize

the pulse to the beginning of the period, and the

end of the pulse can occur at any time within the

period.

The Device IDs (DEVID1 and DEVID2) are located at

addresses 3FFFFEh:3FFFFFh in the device’s

configuration space. They are shown in binary in the

format “DEVID2 DEVID1”.

Work around

1. Module: ECCP

None.

When monitoring a shutdown condition using a bit

test on the ECCPASE bit (ECCP1AS<7>) or

performing a bit operation on the ECCPASE bit,

the device may produce unexpected results.

Date Codes that pertain to this issue:

All engineering and production devices.

4. Module: ECCP

Work around

The auto-shutdown event will cause the ECCP

pins (P1A, P1B, P1C, P1D) to draw higher current

than expected. This occurs when the ECCPAS1 or

ECCPAS0 bits are set and an auto-shutdown

event occurs.

Before performing a bit test or bit operation on the

ECCPASE bit, copy the ECCP1AS register to the

working register and perform the test or operation

there.

By avoiding these operations on the ECCPASE bit

in the ECCP1AS register, the module will operate

normally.

Work around

None.

In Example 1, ECCPASE bit operations are

performed on the W register.

Date Codes that pertain to this issue:

All engineering and production devices.

EXAMPLE 1:

MOVF

BTFSC WREG, ECCPASE

BRA SHUTDOWN_ROUTINE

ECCP1AS, W

Date Codes that pertain to this issue:

All engineering and production devices.

DS80202G-page 1

12 3 4 5 6 7...14

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与PIC18F4680-IPT相关器件

型号	品牌	获取价格	描述	数据表
PIC18F4680IPTQTP	MICROCHIP	获取价格	28/40/44-Pin Enhanced Flash Microcontrollers
PIC18F4680IPTSQTP	MICROCHIP	获取价格	28/40/44-Pin Enhanced Flash Microcontrollers
PIC18F4680ISOQTP	MICROCHIP	获取价格	28/40/44-Pin Enhanced Flash Microcontrollers
PIC18F4680ISOSQTP	MICROCHIP	获取价格	28/40/44-Pin Enhanced Flash Microcontrollers
PIC18F4680ISPQTP	MICROCHIP	获取价格	28/40/44-Pin Enhanced Flash Microcontrollers
PIC18F4680ISPSQTP	MICROCHIP	获取价格	28/40/44-Pin Enhanced Flash Microcontrollers
PIC18F4680-ME/PL	MICROCHIP	获取价格	EMULATOR, 10C to 50C, 128-LQFP, TRAY
PIC18F4680T-E/ML	MICROCHIP	获取价格	8-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQCC44, 8 X 8 MM, PLASTIC, MO-220, QFN-44
PIC18F4680T-E/P	MICROCHIP	获取价格	8-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PDIP40, 0.600 INCH, PLASTIC, MO-011, DIP-40
PIC18F4680T-E/PT	MICROCHIP	获取价格	8-BIT, FLASH, 40 MHz, RISC MICROCONTROLLER, PQFP44, 10 X 10 MM, 1 MM HEIGHT, PLASTIC, MS-0

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