PIC16F631-I/P Microchip Technology Inc., PIC16F631-I/P Datasheet - Page 189
PIC16F631-I/P
Manufacturer Part Number
PIC16F631-I/P
Description
MCU, 8-Bit, 1KW Flash, 64 RAM, 18 I/O, PDIP-20
Manufacturer
Microchip Technology Inc.
Datasheet
1.PIC16F631-IP.pdf
(294 pages)
Specifications of PIC16F631-I/P
Comparators
2
Cpu Speed
5 MIPS
Eeprom Memory
128 Bytes
Input Output
18
Memory Type
Flash
Number Of Bits
8
Package Type
20-pin PDIP
Programmable Memory
1.75K Bytes
Ram Size
64 Bytes
Speed
20 MHz
Timers
1-8-bit, 1-16-bit
Voltage, Range
2-5.5 V
Lead Free Status / Rohs Status
RoHS Compliant part
Electrostatic Device
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13.12.3
An SSP Mask (SSPMSK) register is available in I
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.
REGISTER 13-3:
© 2007 Microchip Technology Inc.
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-1
bit 0
Note 1: When SSPCON bits SSPM<3:0> = 1001, any reads or writes to the SSPADD SFR address are accessed
R/W-1
MSK7
2: In all other SSP modes, this bit has no effect.
SSP MASK REGISTER
through the SSPMSK register. The SSPEN bit of the SSPCON register should be zero when accessing
the SSPMSK register.
MSK<7:1>: Mask bits
1 = The received address bit n is compared to SSPADD<n> to detect I
0 = The received address bit n is not used to detect I
MSK<0>: Mask bit for I
I
1 = The received address bit 0 is compared to SSPADD<0> to detect I
0 = The received address bit 0 is not used to detect I
2
C Slave mode, 10-bit Address (SSPM<3:0> = 0111):
R/W-1
MSK6
SSPMSK: SSP MASK REGISTER
W = Writable bit
‘1’ = Bit is set
R/W-1
MSK5
PIC16F631/677/685/687/689/690
2
C Slave mode, 10-bit Address
R/W-1
MSK4
2
C
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
(1)
R/W-1
MSK3
This register must be initiated prior to setting
SSPM<3:0> bits to select the I
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.
2
2
C address match
(2)
C address match
R/W-1
MSK2
2
2
C address match
C address match
x = Bit is unknown
R/W-1
MSK1
2
C Slave mode (7-bit or
DS41262D-page 187
MSK0
R/W-1
(2)
bit 0
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