XC68HC705F32 Motorola, XC68HC705F32 Datasheet - Page 104

• Manufacturer Part Number: XC68HC705F32
• Description: MICROCONTROLLER
• Manufacturer: Motorola

10
10.4
There are three registers in the serial peripheral interface which provide control, status and data
storage functions. These registers are called: the serial peripheral control register (SPCR), the
serial peripheral status register (SPSR) and the serial peripheral data I/O register (SPDAT).
10.4.1
SPIE — SPI interrupt enable
When this bit is set to one, a hardware interrupt sequence is requested each time the SPIF or
MODF status flag is set. SPI interrupts are inhibited if this bit is clear or if the I bit in the CC register
is set.
MOTOROLA
10-6
SPI control register (SPCR)
1 (set)
0 (clear) –
SPI clock generator
Figure 10-3 Serial peripheral interface master–slave interconnection
SPI registers
Control register (SPCR)
8-bit shift register
–
Master
SPI interrupts enabled.
SPI interrupts disabled.
Address
$0044
SERIAL PERIPHERAL INTERFACE
SPIE
bit 7
MISO
MOSI
SCK
SS
SPE
bit 6
V
DD
DOD MSTR CPOL CPHA SPR1 SPR0 0000 01uu
bit 5
MISO
MOSI
SCK
SS
bit 4
bit 3
bit 2
8-bit shift register
Slave
bit 1
MC68HC05F32
bit 0
on reset
State
TPG