MCP19124 datasheet(81/236 Pages) MICROCHIP

81 / 236 page

 2016 Microchip Technology Inc.

DS20005619A-page 81

MCP19124/5

11.0 DEVICE CONFIGURATION

Device Configuration consists of Configuration Word,

Code Protection and Device ID.

11.1

Configuration Word

There are several Configuration Word bits that allow

different timers to be enabled and allow memory

protection options. These are implemented as

Configuration Word at 2007h

Note:

The DBGEN bit in Configuration Word is

managed

automatically

device

development tools, including debuggers

and programmers. For normal device

operation, this bit should be maintained as

a '1'. Debug is available only on the

MCP19125.

CONFIG: CONFIGURATION WORD

R/P-1

U-1

R/P-1

U-1

R/P-1

DBGEN

—

WRT1

WRT0

—BOREN

bit 13

bit 8

U-1

R/P-1

U-1

—CP

MCLRE

PWRTE

WDTE

—

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘1’

-n = Value at POR

‘1’

= Bit is set

‘0’

= Bit is cleared

x = Bit is unknown

bit 13

DBGEN: ICD Debug bit

= ICD debug mode disabled

= ICD debug mode enabled

bit 12

Unimplemented: Read as ‘1’

bit 11-10

WRT<1:0>: Flash Program Memory Self Write Enable bit

= Write protection off

= 000h to 3FFh write protected, 400h to FFFh may be modified by PMCON1 control

= 000h to 7FFh write protected, 800h to FFFh may be modified by PMCON1 control

= 000h to FFFh write protected, entire program memory is write protected.

bit 9

Unimplemented: Read as ‘1’

bit 8

BOREN: Brown-Out Reset Enable bit

= BOR disabled during Sleep and enabled during operation

= BOR disabled

bit 7

Unimplemented: Read as ‘1’

bit 6

CP: Code Protection

= Program memory is not code protected

= Program memory is external read and write protected

bit 5

MCLRE: MCLR Pin Function Select

=MCLR pin is MCLR function and weak internal pull-up is enabled

=MCLR pin is alternate function, MCLR function is internally disabled

bit 4

PWRTE: Power-Up Timer Enable bit (1)

= PWRT disabled

= PWRT enabled

bit 3

WDTE: Watchdog Timer Enable bit

= WDT enabled

= WDT disabled

bit 2-0

Unimplemented: Read as ‘1’

Note 1: Bit is reserved and not controlled by user.

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