MC68HC705C8ACS

Manufacturer Part NumberMC68HC705C8ACS
DescriptionHCMOS 8-bit microcontroller unit
ManufacturerMotorola
MC68HC705C8ACS datasheet
 

Specifications of MC68HC705C8ACS

CaseDIP-40L  
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Page 145/222:

Multiple-SPI Systems

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Example:
LDA #$1C
STA SPCR
LDA #$4C
STA SPCR
11.5 Multiple-SPI Systems
In a multiple-SPI system, all PD4/SCK pins are connected together, all
PD3/MOSI pins are connected together, and all PD2/MISO pins are
connected together.
Before a transmission, one SPI is configured as master and the rest are
configured as slaves.
master SPI and three slave SPIs.
Figure 11-5
three slave SPIs.
MC68HC705C8A — Rev. 3
MOTOROLA
; MSTR = 1, CPOL = 1, CPHA = 1,
; SPR1 = SPR0 = 0
; SPI control register
; MSTR = 0, SPE = 1, CPOL = 1, CPHA = 1,
; SPR1 = SPR0 = 0
; SPI control register
Figure 11-4
MASTER MCU
PD2/MISO
PD3/MOSI
PD4/SCK
PD5/SS
V
DD
2
I/O
1
PORT
0
SLAVE MCU 2
Figure 11-4. One Master and Three Slaves Block Diagram
is another block diagram with two master/slave SPIs and
Serial Peripheral Interface (SPI)
Serial Peripheral Interface (SPI)

Multiple-SPI Systems

is a block diagram showing a single
SLAVE MCU 1
SLAVE MCU 0
Technical Data
145