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PIC12F508-I-SN

更新时间： 2024-01-07 23:14:24

品牌	Logo	应用领域
美国微芯 - MICROCHIP		/
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PIC12F508/509 Rev. A Silicon/Data Sheet Errata

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PIC12F508-I-SN 数据手册

PIC12F508/509

PIC12F508/509 Rev. A Silicon/Data Sheet Errata

The PIC12F508/509 parts you have received conform

functionally to the Device Data Sheet (DS41236C),

except for the anomalies described below.

2. Module: PIC12F509 debugging with ICD2

(PIC16F505-ICD silicon) – Invalid

FSR Power-Up Initialization

All problems listed here will be addressed in future

revisions of the PIC12F508/509 silicon. Where noted,

problems apply to listed revision only.

The FSR on the PIC16F505-ICD debugger silicon

initializes to an invalid state. When using the ICD to

debug software with the PIC16F505-ICD, bit 5 in the

FSR register must be manually cleared to ‘0’ prior to

saving data in user RAM space. The power-up default

is ‘1’, which causes the device to Access Bank 1. The

power-up defaults are correct on the non-ICD version

of the PIC12F509 devices.

1. Module: MPLAB^®IDE, Revision 6.61 and

Earlier

MPLAB IDE 6.61 does not look for or set the

Configuration Word in the hex file at the conven-

tional logical location of 0xFFF.

Work around:

Add the following line of code to the top of your

program;

The CONFIG data must be assigned in two

locations within the assembly code to ensure

proper Configuration Word placement in the hex

file. This is only required for MPLAB IDE version

6.61 and earlier.

BCF FSR,5 ;set bank pointers to bank 0

This will have no effect on non-ICD devices, but will

correct for the initialization errata on -ICD devices.

Fixed Code

3. Module: I_PD, Power-Down Base current

org

0xYYYY

data

_CP_OFF & _WDT_ON & etc.

On the PIC12F508/509 silicon, revisions earlier

than A3, the power-down base current may remain

higher than the specification for a short time when

entering Sleep.

__CONFIG _CP_OFF & _WDT_ON & etc.

Re-locatable Code

.config

code 0xYYYY

The following graph illustrates the device current

upon entering Sleep:

data

data _CP_OFF & _WDT_ON &

etc.

FIGURE 1:

__CONFIG data _CP_OFF & _WDT_ON &

etc.

I_DD

Configuration Word Address

Device

PIC12F508

PIC12F509

YYYY

03FF

07FF

I_PD

Time

Note: YYYY is the address of the Configuration

Word for the part.

Device enters

Sleep

Device current

reaches I_PD

The length of time between the device entering

Sleep mode and the device current reaching I_PD

increases as both temperature and voltage

decrease.

Work around

This issue is fixed in Revisions A3 and later.

DS80190G-page 1

12 3 4

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