PIC16F883-ESLASHSO. datasheet(212/338 Pages) MICROCHIP

212 / 338 page

PIC16F882/883/884/886/887

DS41291G-page 212

 2006-2012 Microchip Technology Inc.

13.4.17

SSP MASK REGISTER

An SSP Mask (SSPMSK) register is available in I2C

Slave mode as a mask for the value held in the

SSPSR register during an address comparison

operation. A zero (‘0’) bit in the SSPMSK register has

the effect of making the corresponding bit in the

SSPSR register a “don’t care”.

This register is reset to all ‘1’s upon any Reset

condition and, therefore, has no effect on standard

SSP operation until written with a mask value.

This register must be initiated prior to setting

SSPM<3:0> bits to select the I2C Slave mode (7-bit or

10-bit address).

This register can only be accessed when the appropriate

mode is selected by bits (SSPM<3:0> of SSPCON).

The SSP Mask register is active during:

• 7-bit Address mode: address compare of A<7:1>.

• 10-bit Address mode: address compare of A<7:0>

only. The SSP mask has no effect during the

reception of the first (high) byte of the address.

SSPMSK: SSP MASK REGISTER(1)

R/W-1

MSK7

MSK6

MSK5

MSK4

MSK3

MSK2

MSK1

MSK0(2)

bit 7

bit 0

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 7-1

MSK<7:1>: Mask bits

1 = The received address bit n is compared to SSPADD<n> to detect I2C address match

0 = The received address bit n is not used to detect I2C address match

bit 0

MSK<0>: Mask bit for I2C Slave mode, 10-bit Address(2)

I2C Slave mode, 10-bit Address (SSPM<3:0> = 0111):

1 = The received address bit 0 is compared to SSPADD<0> to detect I2C address match

0 = The received address bit 0 is not used to detect I2C address match

Note 1: When SSPCON bits SSPM<3:0> = 1001, any reads or writes to the SSPADD SFR address are accessed

through the SSPMSK register.

2: In all other SSP modes, this bit has no effect.

PIC16F883-E/SO. 데이터시트(PDF) 212 Page - Microchip Technology

PIC16F883-E/SO. 데이터시트(HTML) 212 Page - Microchip Technology

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL