PIC18F248-E/L MICROCHIP [Microchip Technology], PIC18F248-E/L Datasheet - Page 153

• Manufacturer Part Number: PIC18F248-E/L
• Description: 28/40-Pin High-Performance, Enhanced Flash Microcontrollers with CAN Module
• Manufacturer: MICROCHIP [Microchip Technology]

17.3.8
In Master mode, all module clocks are halted and the
transmission/reception will remain in that state until the
device wakes from Sleep. After the device returns to
normal mode, the module will continue to transmit/
receive data.
In 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 MSSP interrupt
flag bit will be set and if enabled, will wake the device
from Sleep.
17.3.9
A Reset disables the MSSP module and terminates the
current transfer.
TABLE 17-2:
© 2006 Microchip Technology Inc.
INTCON
PIR1
PIE1
IPR1
TRISC
TRISA
SSPBUF
SSPCON1
SSPSTAT
Legend:
Note 1:
Name
x = unknown, u = unchanged, - = unimplemented, read as ‘0’. Shaded cells are not used by the MSSP in SPI™ mode.
These registers or register bits are not implemented on the PIC18F248 and PIC18F258 and read as ‘0’s.
SLEEP OPERATION
EFFECTS OF A RESET
PORTC Data Direction Register
Synchronous Serial Port Receive Buffer/Transmit Register
GIE/GIEH PEIE/GIEL TMR0IE
PSPIF
PSPIE
PSPIP
WCOL
Bit 7
SMP
—
REGISTERS ASSOCIATED WITH SPI™ OPERATION
(1)
(1)
(1)
TRISA6
SSPOV
ADIE
ADIP
Bit 6
ADIF
CKE
TRISA5
SSPEN
RCIF
RCIE
RCIP
Bit 5
D/A
TRISA4
INT0IE
Bit 4
TXIF
TXIE
TXIP
CKP
P
TRISA3
SSPM3
SSPIF
SSPIE
SSPIP
RBIE
Bit 3
S
17.3.10
Table 17-1 shows the compatibility between the
standard SPI modes and the states of the CKP and
CKE control bits.
TABLE 17-1:
There is also an SMP bit which controls when the data
is sampled.
Standard SPI Mode
TMR0IF
CCP1IE
CCP1IP
CCP1IF
TRISA2
SSPM2
Bit 2
R/W
Terminology
0, 0
0, 1
1, 0
1, 1
BUS MODE COMPATIBILITY
TMR2IE
TMR2IP
TMR2IF
TRISA1
SSPM1
INT0IF
Bit 1
UA
SPI™ BUS MODES
TMR1IE 0000 0000 0000 0000
TMR1IP 1111 1111 1111 1111
TMR1IF
TRISA0
SSPM0
RBIF
Bit 0
BF
PIC18FXX8
CKP
Control Bits State
0
0
1
1
0000 000x 0000 000u
0000 0000 0000 0000
1111 1111 1111 1111
-111 1111 -111 1111
xxxx xxxx uuuu uuuu
0000 0000 0000 0000
0000 0000 0000 0000
POR, BOR
Value on
DS41159E-page 151
CKE
Value on
all other
Resets
1
0
1
0