PIC12F1822 MICROCHIP [Microchip Technology], PIC12F1822 Datasheet - Page 236

• Manufacturer Part Number: PIC12F1822
• Description: 8/14-Pin Flash Microcontrollers with nanoWatt XLP Technology
• Manufacturer: MICROCHIP [Microchip Technology]

PIC12F/LF1822/16F/LF1823
24.2.6
In SPI Master mode, module clocks may be operating
at a different speed than when in full power mode; in
the case of the Sleep mode, all clocks are halted.
Special care must be taken by the user when the
MSSP1 clock is much faster than the system clock.
In Slave mode, when MSSP1 interrupts are enabled,
after the master completes sending data, an MSSP1
interrupt will wake the controller from Sleep.
If an exit from Sleep mode is not desired, MSSP1
interrupts should be disabled.
TABLE 24-1:
DS41413A-page 236
ANSELA
ANSELC
APFCON
INTCON
PIE1
PIR1
SSP1BUF
SSP1CON1
SSP1CON3
SSP1STAT
TRISA
TRISC
Legend:
Note 1:
Name
*
SPI OPERATION IN SLEEP MODE
— = Unimplemented location, read as ‘0’. Shaded cells are not used by the MSSP1 in SPI mode.
Page provides register information.
PIC16F/LF1823 only.
Synchronous Serial Port Receive Buffer/Transmit Register
RXDTSEL
TMR1GIE
TMR1GIF
ACKTIM
WCOL
Bit 7
SMP
GIE
—
—
—
—
SUMMARY OF REGISTERS ASSOCIATED WITH SPI OPERATION
SDOSEL
SSPOV
PEIE
ADIE
ADIF
PCIE
Bit 6
CKE
—
—
—
—
TMR0IE
TRISC5
SSPEN
TRISA5
SSSEL
RCIE
RCIF
SCIE
Bit 5
D/A
—
—
TRISA4
TRISC4
ANSA4
BOEN
Preliminary
INTE
Bit 4
TXIE
TXIF
CKP
—
—
P
T1GSEL
SSP1IE
TRISA3
TRISC3
ANSC3
SSP1IF
SDAHT
IOCIE
Bit 3
In SPI Master mode, when the Sleep mode is selected,
all module clocks are halted and the transmis-
sion/reception will remain in that state until the device
wakes. After the device returns to Run mode, the mod-
ule will resume transmitting and receiving data.
In SPI Slave mode, the SPI Transmit/Receive Shift
register operates asynchronously to the device. This
allows the device to be placed in Sleep mode and data
to be shifted into the SPI Transmit/Receive Shift
register. When all 8 bits have been received, the
MSSP1 interrupt flag bit will be set and if enabled, will
wake the device.
—
S
TXCKSEL
TMR0IF
CCP1IE
CCP1IF
SBCDE
TRISA2
TRISC2
ANSA2
ANSC2
Bit 2
R/W
SSPM<3:0>
P1BSEL
TMR2IE
TMR2IF
TRISC1
TRISA1
ANSA1
ANSC1
AHEN
Bit 1
INTF
 2010 Microchip Technology Inc.
UA
CCP1SEL
TMR1IE
TMR1IF
TRISA0
TRISC0
ANSC0
ANSA0
DHEN
IOCIF
Bit 0
BF
Register
on Page
229*
122
126
118
275
277
274
121
125
89
90
92