OPTION_REG datasheet(105/222 Pages) MICROCHIP

105 / 222 page

 2013 Microchip Technology Inc.

DS22331A-page 105

MCP19111

PMADRH: PROGRAM MEMORY ADDRESS HIGH BYTE REGISTER

U-0

R/W-0

—

PMADRH<3:0>

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-4

Unimplemented: Read as ‘0’

bit 3-0

PMADRH<3:0>: Specifies the 4 Most Significant Address bits or High bits for Program Memory Reads.

PMCON1 – PROGRAM MEMORY CONTROL REGISTER 1

U-1

R/W-0

U-0

R/W-0

R/S-0

—

CALSEL

—

—WREN

bit 7

bit 0

Legend:

R = Readable bit

P = Programmable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7

Unimplemented: Read as '1'

bit 6

CALSEL: Program Memory calibration space select

= Select test memory area for reads only (for loading calibration trim registers)

= Select user area for reads

bit 5-3

Unimplemented: Read as '0'

bit 2

WREN: Program Memory Write Enable bit

= Allows write cycles

= Inhibits write to the EEPROM

bit 1

WR: Write Control bit

= Initiates a write cycle to program memory. (The bit is cleared by hardware when write is complete.

The WR bit can only be set (not cleared) in software.)

= Write cycle to the Flash memory is complete

bit 0

RD: Read Control bit

= Initiates a program memory read. (The read takes one cycle. The RD is cleared in hardware; the

RD bit can only be set (not cleared) in software).

= Does not initiate a Flash memory read

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